feat: First implement

.gitignore

@@ -0,0 +1 @@
+/angular

Gopkg.lock

@@ -0,0 +1,33 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  name = "github.com/davecgh/go-spew"
+  packages = ["spew"]
+  revision = "346938d642f2ec3594ed81d874461961cd0faa76"
+  version = "v1.1.0"
+
+[[projects]]
+  name = "github.com/pmezard/go-difflib"
+  packages = ["difflib"]
+  revision = "792786c7400a136282c1664665ae0a8db921c6c2"
+  version = "v1.0.0"
+
+[[projects]]
+  name = "github.com/stretchr/testify"
+  packages = ["assert"]
+  revision = "12b6f73e6084dad08a7c6e575284b177ecafbc71"
+  version = "v1.2.1"
+
+[[projects]]
+  name = "github.com/tsuyoshiwada/go-gitcmd"
+  packages = ["."]
+  revision = "5f1f5f9475df211f8b48620d704284d7375229c3"
+  version = "0.0.1"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  inputs-digest = "17271414dc3348b7121ebaa3be692b0ab28fb72f2f4d85967b4a2589cb6a292e"
+  solver-name = "gps-cdcl"
+  solver-version = 1

Gopkg.toml

@@ -0,0 +1,29 @@
+
+# Gopkg.toml example
+#
+# Refer to https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#  name = "github.com/x/y"
+#  version = "2.4.0"
+
+[[constraint]]
+  name = "github.com/stretchr/testify"
+  version = "1.2.1"
+
+[[constraint]]
+  name = "github.com/tsuyoshiwada/go-gitcmd"
+  version = "0.0.1"

changelog.tpl.md

@@ -0,0 +1,16 @@
+# CHANGELOG
+
+{{range .Versions}}
+<a name="{{urlquery .Tag.Name}}"></a>
+## {{.Tag.Name}} ({{datetime "2006-01-02" .Tag.Date}})
+{{range .CommitGroups}}
+### {{.Title}}
+{{range .Commits}}
+* {{if ne .Scope ""}}**{{.Scope}}:** {{end}}{{.Subject}}{{end}}
+{{end}}{{range .NoteGroups}}
+### {{.Title}}
+{{range .Notes}}
+{{.Body}}
+{{end}}
+{{end}}
+{{end}}

chglog.go

@@ -0,0 +1,179 @@
+package chglog
+
+import (
+	"io"
+	"os"
+	"path/filepath"
+	"text/template"
+	"time"
+
+	gitcmd "github.com/tsuyoshiwada/go-gitcmd"
+)
+
+// Options ...
+type Options struct {
+	Processor            Processor
+	CommitFilters        map[string][]string
+	CommitSortBy         string
+	CommitGroupBy        string
+	CommitGroupSortBy    string
+	CommitGroupTitleMaps map[string]string
+	HeaderPattern        string
+	HeaderPatternMaps    []string
+	IssuePrefix          []string
+	RefActions           []string
+	MergeNoteTitle       string
+	MergePattern         string
+	MergePatternMaps     []string
+	RevertNoteTitle      string
+	RevertPattern        string
+	RevertPatternMaps    []string
+	NoteKeywords         []string
+}
+
+// Info ...
+type Info struct {
+	Title         string
+	RepositoryURL string
+}
+
+// RenderData ...
+type RenderData struct {
+	Info     *Info
+	Versions []*Version
+}
+
+// Config ...
+type Config struct {
+	Bin      string
+	Path     string
+	Template string
+	Info     *Info
+	Options  *Options
+}
+
+// Generator ...
+type Generator struct {
+	client          gitcmd.Client
+	config          *Config
+	tagReader       *tagReader
+	tagSelector     *tagSelector
+	commitParser    *commitParser
+	commitExtractor *commitExtractor
+}
+
+// NewGenerator ...
+func NewGenerator(config *Config) *Generator {
+	client := gitcmd.New(&gitcmd.Config{
+		Bin: config.Bin,
+	})
+
+	if config.Options.Processor != nil {
+		config.Options.Processor.Bootstrap(config)
+	}
+
+	return &Generator{
+		client:          client,
+		config:          config,
+		tagReader:       newTagReader(client),
+		tagSelector:     newTagSelector(),
+		commitParser:    newCommitParser(client, config),
+		commitExtractor: newCommitExtractor(config.Options),
+	}
+}
+
+// Generate ...
+func (gen *Generator) Generate(w io.Writer, query string) error {
+	back, err := gen.workdir()
+	if err != nil {
+		return err
+	}
+
+	versions, err := gen.readVersions(query)
+	if err != nil {
+		return err
+	}
+
+	back()
+
+	return gen.render(w, versions)
+}
+
+func (gen *Generator) readVersions(query string) ([]*Version, error) {
+	tags, err := gen.tagReader.ReadAll()
+	if err != nil {
+		return nil, err
+	}
+
+	first := ""
+	if query != "" {
+		tags, first, err = gen.tagSelector.Select(tags, query)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	versions := []*Version{}
+
+	for i, tag := range tags {
+		var rev string
+
+		if i+1 < len(tags) {
+			rev = tags[i+1].Name + ".." + tag.Name
+		} else {
+			if first != "" {
+				rev = first + ".." + tag.Name
+			} else {
+				rev = tag.Name
+			}
+		}
+
+		commits, err := gen.commitParser.Parse(rev)
+		if err != nil {
+			return nil, err
+		}
+
+		commitGroups, noteGroups := gen.commitExtractor.Extract(commits)
+
+		versions = append(versions, &Version{
+			Tag:          tag,
+			CommitGroups: commitGroups,
+			NoteGroups:   noteGroups,
+		})
+	}
+
+	return versions, nil
+}
+
+func (gen *Generator) workdir() (func() error, error) {
+	cwd, err := os.Getwd()
+	if err != nil {
+		return nil, err
+	}
+
+	err = os.Chdir(gen.config.Path)
+	if err != nil {
+		return nil, err
+	}
+
+	return func() error {
+		return os.Chdir(cwd)
+	}, nil
+}
+
+func (gen *Generator) render(w io.Writer, versions []*Version) error {
+	fmap := template.FuncMap{
+		"datetime": func(layout string, input time.Time) string {
+			return input.Format(layout)
+		},
+	}
+
+	fname := filepath.Base(gen.config.Template)
+
+	t := template.Must(template.New(fname).Funcs(fmap).ParseFiles(gen.config.Template))
+
+	return t.Execute(w, &RenderData{
+		Info:     gen.config.Info,
+		Versions: versions,
+	})
+}

chglog_test.go

@@ -0,0 +1,22 @@
+package chglog
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func workdir(dir string) func() {
+	cwd, _ := os.Getwd()
+	os.Chdir(dir)
+	return func() {
+		os.Chdir(cwd)
+	}
+}
+
+func TestGenerator(t *testing.T) {
+	t.Skip("TODO: test")
+	assert := assert.New(t)
+	assert.True(true)
+}

commit_extractor.go

@@ -0,0 +1,180 @@
+package chglog
+
+import (
+	"sort"
+	"strings"
+)
+
+type commitExtractor struct {
+	opts *Options
+}
+
+func newCommitExtractor(opts *Options) *commitExtractor {
+	return &commitExtractor{
+		opts: opts,
+	}
+}
+
+func (e *commitExtractor) Extract(commits []*Commit) ([]*CommitGroup, []*NoteGroup) {
+	filteredCommits := commitFilter(commits, e.opts.CommitFilters)
+	commitGroups := []*CommitGroup{}
+	noteGroups := []*NoteGroup{}
+
+	for _, commit := range filteredCommits {
+		e.processCommitGroups(&commitGroups, commit)
+		e.processNoteGroups(&noteGroups, commit)
+	}
+
+	e.sortCommitGroups(commitGroups)
+	e.sortNoteGroups(noteGroups)
+
+	return commitGroups, noteGroups
+}
+
+func (e *commitExtractor) processCommitGroups(groups *[]*CommitGroup, commit *Commit) {
+	var group *CommitGroup
+
+	// commit group
+	raw, ttl := e.commitGroupTitle(commit)
+
+	for _, g := range *groups {
+		if g.RawTitle == raw {
+			group = g
+		}
+	}
+
+	if group != nil {
+		group.Commits = append(group.Commits, commit)
+	} else if raw != "" {
+		*groups = append(*groups, &CommitGroup{
+			RawTitle: raw,
+			Title:    ttl,
+			Commits:  []*Commit{commit},
+		})
+	}
+}
+
+func (e *commitExtractor) processNoteGroups(groups *[]*NoteGroup, commit *Commit) {
+	if len(commit.Notes) != 0 {
+		// notes
+		for _, note := range commit.Notes {
+			e.appendNoteToNoteGroups(groups, note)
+		}
+	} else if commit.Merge != nil && e.opts.MergeNoteTitle != "" {
+		// merges
+		e.appendNoteToNoteGroups(groups, &Note{
+			Title: e.opts.MergeNoteTitle,
+			Body:  commit.Header,
+		})
+	} else if commit.Revert != nil && e.opts.RevertNoteTitle != "" {
+		// reverts
+		e.appendNoteToNoteGroups(groups, &Note{
+			Title: e.opts.RevertNoteTitle,
+			Body:  commit.Header,
+		})
+	}
+}
+
+func (e *commitExtractor) appendNoteToNoteGroups(groups *[]*NoteGroup, note *Note) {
+	exist := false
+
+	for _, g := range *groups {
+		if g.Title == note.Title {
+			exist = true
+			g.Notes = append(g.Notes, note)
+		}
+	}
+
+	if !exist {
+		*groups = append(*groups, &NoteGroup{
+			Title: note.Title,
+			Notes: []*Note{note},
+		})
+	}
+}
+
+func (e *commitExtractor) commitGroupTitle(commit *Commit) (string, string) {
+	var (
+		raw string
+		ttl string
+	)
+
+	if title, ok := dotGet(commit, e.opts.CommitGroupBy); ok {
+		if v, ok := title.(string); ok {
+			raw = v
+			if t, ok := e.opts.CommitGroupTitleMaps[v]; ok {
+				ttl = t
+			} else {
+				ttl = strings.Title(raw)
+			}
+		}
+	}
+
+	return raw, ttl
+}
+
+func (e *commitExtractor) sortCommitGroups(groups []*CommitGroup) {
+	// groups
+	sort.Slice(groups, func(i, j int) bool {
+		var (
+			a, b interface{}
+			ok   bool
+		)
+
+		a, ok = dotGet(groups[i], e.opts.CommitGroupSortBy)
+		if !ok {
+			return false
+		}
+
+		b, ok = dotGet(groups[j], e.opts.CommitGroupSortBy)
+		if !ok {
+			return false
+		}
+
+		res, err := compare(a, "<", b)
+		if err != nil {
+			return false
+		}
+		return res
+	})
+
+	// commits
+	for _, group := range groups {
+		sort.Slice(group.Commits, func(i, j int) bool {
+			var (
+				a, b interface{}
+				ok   bool
+			)
+
+			a, ok = dotGet(group.Commits[i], e.opts.CommitSortBy)
+			if !ok {
+				return false
+			}
+
+			b, ok = dotGet(group.Commits[j], e.opts.CommitSortBy)
+			if !ok {
+				return false
+			}
+
+			res, err := compare(a, "<", b)
+			if err != nil {
+				return false
+			}
+			return res
+		})
+	}
+}
+
+func (e *commitExtractor) sortNoteGroups(groups []*NoteGroup) {
+	// groups
+	sort.Slice(groups, func(i, j int) bool {
+		return strings.ToLower(groups[i].Title) < strings.ToLower(groups[j].Title)
+	})
+
+	// notes
+	for _, group := range groups {
+		sort.Slice(group.Notes, func(i, j int) bool {
+			return strings.ToLower(group.Notes[i].Title) < strings.ToLower(group.Notes[j].Title)
+		})
+	}
+}

commit_extractor_test.go

@@ -0,0 +1,148 @@
+package chglog
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCommitExtractor(t *testing.T) {
+	assert := assert.New(t)
+
+	mTitle := "Merges"
+	rTitle := "Reverts"
+
+	extractor := newCommitExtractor(&Options{
+		CommitSortBy:      "Scope",
+		CommitGroupBy:     "Type",
+		CommitGroupSortBy: "Title",
+		CommitGroupTitleMaps: map[string]string{
+			"bar": "BAR",
+		},
+		MergeNoteTitle:  mTitle,
+		RevertNoteTitle: rTitle,
+	})
+
+	fixtures := []*Commit{
+		// [0]
+		&Commit{
+			Type:   "foo",
+			Scope:  "c",
+			Header: "1",
+			Notes:  []*Note{},
+		},
+		// [1]
+		&Commit{
+			Type:   "foo",
+			Scope:  "b",
+			Header: "2",
+			Notes: []*Note{
+				{"note1-title", "note1-body"},
+				{"note2-title", "note2-body"},
+			},
+		},
+		// [2]
+		&Commit{
+			Type:   "bar",
+			Scope:  "d",
+			Header: "3",
+			Notes: []*Note{
+				{"note1-title", "note1-body"},
+				{"note3-title", "note3-body"},
+			},
+		},
+		// [3]
+		&Commit{
+			Type:   "foo",
+			Scope:  "a",
+			Header: "4",
+			Notes: []*Note{
+				{"note4-title", "note4-body"},
+			},
+		},
+		// [4]
+		&Commit{
+			Type:   "",
+			Scope:  "",
+			Header: "Merge1",
+			Notes:  []*Note{},
+			Merge: &Merge{
+				Ref:    "123",
+				Source: "merges/merge1",
+			},
+		},
+		// [5]
+		&Commit{
+			Type:   "",
+			Scope:  "",
+			Header: "Revert1",
+			Notes:  []*Note{},
+			Revert: &Revert{
+				Raw:     "revert1",
+				Subject: "REVERT1",
+				Hash:    "1",
+			},
+		},
+	}
+
+	commitGroups, noteGroups := extractor.Extract(fixtures)
+
+	assert.Equal([]*CommitGroup{
+		&CommitGroup{
+			RawTitle: "bar",
+			Title:    "BAR",
+			Commits: []*Commit{
+				fixtures[2],
+			},
+		},
+		&CommitGroup{
+			RawTitle: "foo",
+			Title:    "Foo",
+			Commits: []*Commit{
+				fixtures[3],
+				fixtures[1],
+				fixtures[0],
+			},
+		},
+	}, commitGroups)
+
+	assert.Equal([]*NoteGroup{
+		&NoteGroup{
+			Title: mTitle,
+			Notes: []*Note{
+				{mTitle, fixtures[4].Header},
+			},
+		},
+		&NoteGroup{
+			Title: "note1-title",
+			Notes: []*Note{
+				fixtures[1].Notes[0],
+				fixtures[2].Notes[0],
+			},
+		},
+		&NoteGroup{
+			Title: "note2-title",
+			Notes: []*Note{
+				fixtures[1].Notes[1],
+			},
+		},
+		&NoteGroup{
+			Title: "note3-title",
+			Notes: []*Note{
+				fixtures[2].Notes[1],
+			},
+		},
+		&NoteGroup{
+			Title: "note4-title",
+			Notes: []*Note{
+				fixtures[3].Notes[0],
+			},
+		},
+		&NoteGroup{
+			Title: rTitle,
+			Notes: []*Note{
+				{rTitle, fixtures[5].Header},
+			},
+		},
+	}, noteGroups)
+}

commit_filter.go

@@ -0,0 +1,48 @@
+package chglog
+
+func commitFilter(commits []*Commit, filters map[string][]string) []*Commit {
+	res := []*Commit{}
+
+	for _, commit := range commits {
+		include := false
+
+		if len(filters) == 0 {
+			include = true
+		}
+
+		for key, values := range filters {
+			prop, ok := dotGet(commit, key)
+			if !ok {
+				include = false
+				break
+			}
+
+			str, ok := prop.(string)
+			if !ok {
+				include = false
+				break
+			}
+
+			exist := false
+
+			for _, val := range values {
+				if str == val {
+					exist = true
+				}
+			}
+
+			if !exist {
+				include = false
+				break
+			}
+
+			include = true
+		}
+
+		if include {
+			res = append(res, commit)
+		}
+	}
+
+	return res
+}

commit_filter_test.go

@@ -0,0 +1,115 @@
+package chglog
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCommitFilter(t *testing.T) {
+	assert := assert.New(t)
+
+	pickCommitSubjects := func(arr []*Commit) []string {
+		res := make([]string, len(arr))
+		for i, commit := range arr {
+			res[i] = commit.Subject
+		}
+		return res
+	}
+
+	fixtures := []*Commit{
+		&Commit{
+			Type:    "foo",
+			Scope:   "hoge",
+			Subject: "1",
+		},
+		&Commit{
+			Type:    "foo",
+			Scope:   "fuga",
+			Subject: "2",
+		},
+		&Commit{
+			Type:    "bar",
+			Scope:   "hoge",
+			Subject: "3",
+		},
+		&Commit{
+			Type:    "bar",
+			Scope:   "fuga",
+			Subject: "4",
+		},
+	}
+
+	assert.Equal(
+		[]string{
+			"1",
+			"2",
+			"3",
+			"4",
+		},
+		pickCommitSubjects(commitFilter(fixtures, map[string][]string{})),
+	)
+
+	assert.Equal(
+		[]string{
+			"1",
+			"2",
+			"3",
+			"4",
+		},
+		pickCommitSubjects(commitFilter(fixtures, map[string][]string{
+			"Type": {"foo", "bar"},
+		})),
+	)
+
+	assert.Equal(
+		[]string{
+			"1",
+			"2",
+		},
+		pickCommitSubjects(commitFilter(fixtures, map[string][]string{
+			"Type": {"foo"},
+		})),
+	)
+
+	assert.Equal(
+		[]string{
+			"3",
+			"4",
+		},
+		pickCommitSubjects(commitFilter(fixtures, map[string][]string{
+			"Type": {"bar"},
+		})),
+	)
+
+	assert.Equal(
+		[]string{
+			"2",
+			"4",
+		},
+		pickCommitSubjects(commitFilter(fixtures, map[string][]string{
+			"Scope": {"fuga"},
+		})),
+	)
+
+	assert.Equal(
+		[]string{
+			"3",
+		},
+		pickCommitSubjects(commitFilter(fixtures, map[string][]string{
+			"Type":  {"bar"},
+			"Scope": {"hoge"},
+		})),
+	)
+
+	assert.Equal(
+		[]string{
+			"1",
+			"2",
+		},
+		pickCommitSubjects(commitFilter(fixtures, map[string][]string{
+			"Type":  {"foo"},
+			"Scope": {"fuga", "hoge"},
+		})),
+	)
+}

commit_parser.go

@@ -0,0 +1,328 @@
+package chglog
+
+import (
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+
+	gitcmd "github.com/tsuyoshiwada/go-gitcmd"
+)
+
+var (
+	// constants
+	separator = "@@__CHGLOG__@@"
+	delimiter = "@@__CHGLOG_DELIMITER__@@"
+
+	// fields
+	hashField      = "HASH"
+	authorField    = "AUTHOR"
+	committerField = "COMMITTER"
+	subjectField   = "SUBJECT"
+	bodyField      = "BODY"
+
+	// formats
+	hashFormat      = hashField + ":%H\t%h"
+	authorFormat    = authorField + ":%an\t%ae\t%at"
+	committerFormat = committerField + ":%cn\t%ce\t%ct"
+	subjectFormat   = subjectField + ":%s"
+	bodyFormat      = bodyField + ":%b"
+
+	// log
+	logFormat = separator + strings.Join([]string{
+		hashFormat,
+		authorFormat,
+		committerFormat,
+		subjectFormat,
+		bodyFormat,
+	}, delimiter)
+)
+
+type commitParser struct {
+	client    gitcmd.Client
+	config    *Config
+	reHeader  *regexp.Regexp
+	reMerge   *regexp.Regexp
+	reRevert  *regexp.Regexp
+	reRef     *regexp.Regexp
+	reIssue   *regexp.Regexp
+	reNotes   *regexp.Regexp
+	reMention *regexp.Regexp
+}
+
+func newCommitParser(client gitcmd.Client, config *Config) *commitParser {
+	opts := config.Options
+
+	joinedRefActions := strings.Join(opts.RefActions, "|")
+	joinedIssuePrefix := strings.Join(opts.IssuePrefix, "|")
+	joinedNoteKeywords := strings.Join(opts.NoteKeywords, "|")
+
+	return &commitParser{
+		client:    client,
+		config:    config,
+		reHeader:  regexp.MustCompile(opts.HeaderPattern),
+		reMerge:   regexp.MustCompile(opts.MergePattern),
+		reRevert:  regexp.MustCompile(opts.RevertPattern),
+		reRef:     regexp.MustCompile("(?i)(" + joinedRefActions + ")\\s?([\\w/\\.\\-]+)?(?:" + joinedIssuePrefix + ")(\\d+)"),
+		reIssue:   regexp.MustCompile("(?:" + joinedIssuePrefix + ")(\\d+)"),
+		reNotes:   regexp.MustCompile("^(?i)[\\s|*]*(" + joinedNoteKeywords + ")[:\\s]+(.*)"),
+		reMention: regexp.MustCompile("@([\\w-]+)"),
+	}
+}
+
+func (p *commitParser) Parse(rev string) ([]*Commit, error) {
+	out, err := p.client.Exec(
+		"log",
+		rev,
+		"--no-decorate",
+		"--pretty="+logFormat,
+		"-n",
+		"10",
+	)
+
+	if err != nil {
+		return nil, err
+	}
+
+	processor := p.config.Options.Processor
+	lines := strings.Split(out, separator)
+	lines = lines[1:]
+	commits := make([]*Commit, len(lines))
+
+	for i, line := range lines {
+		commit := p.parseCommit(line)
+
+		if processor != nil {
+			commit = processor.ProcessCommit(commit)
+			if commit == nil {
+				continue
+			}
+		}
+
+		commits[i] = commit
+	}
+
+	return commits, nil
+}
+
+func (p *commitParser) parseCommit(input string) *Commit {
+	commit := &Commit{}
+	tokens := strings.Split(input, delimiter)
+
+	for _, token := range tokens {
+		firstSep := strings.Index(token, ":")
+		field := token[0:firstSep]
+		value := strings.TrimSpace(token[firstSep+1:])
+
+		switch field {
+		case hashField:
+			commit.Hash = p.parseHash(value)
+		case authorField:
+			commit.Author = p.parseAuthor(value)
+		case committerField:
+			commit.Committer = p.parseCommitter(value)
+		case subjectField:
+			p.processHeader(commit, value)
+		case bodyField:
+			p.processBody(commit, value)
+		}
+	}
+
+	commit.Refs = p.uniqRefs(commit.Refs)
+	commit.Mentions = p.uniqMentions(commit.Mentions)
+
+	return commit
+}
+
+func (p *commitParser) parseHash(input string) *Hash {
+	arr := strings.Split(input, "\t")
+
+	return &Hash{
+		Long:  arr[0],
+		Short: arr[1],
+	}
+}
+
+func (p *commitParser) parseAuthor(input string) *Author {
+	arr := strings.Split(input, "\t")
+	ts, err := strconv.Atoi(arr[2])
+	if err != nil {
+		ts = 0
+	}
+
+	return &Author{
+		Name:  arr[0],
+		Email: arr[1],
+		Date:  time.Unix(int64(ts), 0),
+	}
+}
+
+func (p *commitParser) parseCommitter(input string) *Committer {
+	author := p.parseAuthor(input)
+
+	return &Committer{
+		Name:  author.Name,
+		Email: author.Email,
+		Date:  author.Date,
+	}
+}
+
+func (p *commitParser) processHeader(commit *Commit, input string) {
+	opts := p.config.Options
+
+	// header (raw)
+	commit.Header = input
+
+	var res [][]string
+
+	// Type, Scope, Subject etc ...
+	res = p.reHeader.FindAllStringSubmatch(input, -1)
+	if len(res) > 0 {
+		assignDynamicValues(commit, opts.HeaderPatternMaps, res[0][1:])
+	}
+
+	// Merge
+	res = p.reMerge.FindAllStringSubmatch(input, -1)
+	if len(res) > 0 {
+		merge := &Merge{}
+		assignDynamicValues(merge, opts.MergePatternMaps, res[0][1:])
+		commit.Merge = merge
+	}
+
+	// Revert
+	res = p.reRevert.FindAllStringSubmatch(input, -1)
+	if len(res) > 0 {
+		revert := &Revert{}
+		assignDynamicValues(revert, opts.RevertPatternMaps, res[0][1:])
+		commit.Revert = revert
+	}
+
+	// refs & mentions
+	commit.Refs = p.parseRefs(input)
+	commit.Mentions = p.parseMentions(input)
+}
+
+func (p *commitParser) processBody(commit *Commit, input string) {
+	// body
+	commit.Body = input
+
+	// notes & refs & mentions
+	commit.Notes = []*Note{}
+	inNote := false
+	lines := strings.Split(input, "\n")
+
+	for _, line := range lines {
+		refs := p.parseRefs(line)
+		if len(refs) > 0 {
+			inNote = false
+			commit.Refs = append(commit.Refs, refs...)
+		}
+
+		mentions := p.parseMentions(line)
+		if len(mentions) > 0 {
+			inNote = false
+			commit.Mentions = append(commit.Mentions, mentions...)
+		}
+
+		res := p.reNotes.FindAllStringSubmatch(line, -1)
+
+		if len(res) > 0 {
+			inNote = true
+			for _, r := range res {
+				commit.Notes = append(commit.Notes, &Note{
+					Title: r[1],
+					Body:  r[2],
+				})
+			}
+		} else if inNote {
+			last := commit.Notes[len(commit.Notes)-1]
+			last.Body = last.Body + "\n" + line
+		}
+	}
+
+	for _, note := range commit.Notes {
+		note.Body = strings.TrimSpace(note.Body)
+	}
+}
+
+func (p *commitParser) parseRefs(input string) []*Ref {
+	refs := []*Ref{}
+
+	// references
+	res := p.reRef.FindAllStringSubmatch(input, -1)
+
+	for _, r := range res {
+		refs = append(refs, &Ref{
+			Action: r[1],
+			Source: r[2],
+			Ref:    r[3],
+		})
+	}
+
+	// issues
+	res = p.reIssue.FindAllStringSubmatch(input, -1)
+	for _, r := range res {
+		duplicate := false
+		for _, ref := range refs {
+			if ref.Ref == r[1] {
+				duplicate = true
+			}
+		}
+		if !duplicate {
+			refs = append(refs, &Ref{
+				Action: "",
+				Source: "",
+				Ref:    r[1],
+			})
+		}
+	}
+
+	return refs
+}
+
+func (p *commitParser) parseMentions(input string) []string {
+	res := p.reMention.FindAllStringSubmatch(input, -1)
+	mentions := make([]string, len(res))
+
+	for i, r := range res {
+		mentions[i] = r[1]
+	}
+
+	return mentions
+}
+
+func (p *commitParser) uniqRefs(refs []*Ref) []*Ref {
+	arr := []*Ref{}
+
+	for _, ref := range refs {
+		exist := false
+		for _, r := range arr {
+			if ref.Ref == r.Ref && ref.Action == r.Action && ref.Source == r.Source {
+				exist = true
+			}
+		}
+		if !exist {
+			arr = append(arr, ref)
+		}
+	}
+
+	return arr
+}
+
+func (p *commitParser) uniqMentions(mentions []string) []string {
+	arr := []string{}
+
+	for _, mention := range mentions {
+		exist := false
+		for _, m := range arr {
+			if mention == m {
+				exist = true
+			}
+		}
+		if !exist {
+			arr = append(arr, mention)
+		}
+	}
+
+	return arr
+}

commit_parser_test.go

@@ -0,0 +1,256 @@
+package chglog
+
+import (
+	"errors"
+	"io/ioutil"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCommitParserParse(t *testing.T) {
+	assert := assert.New(t)
+	assert.True(true)
+
+	mock := &mockClient{
+		ReturnExec: func(subcmd string, args ...string) (string, error) {
+			if subcmd != "log" {
+				return "", errors.New("")
+			}
+
+			bytes, _ := ioutil.ReadFile(filepath.Join("fixtures", "gitlog.txt"))
+
+			return string(bytes), nil
+		},
+	}
+
+	parser := newCommitParser(mock, &Config{
+		Options: &Options{
+			CommitFilters: map[string][]string{
+				"Type": []string{
+					"feat",
+					"fix",
+					"perf",
+					"refactor",
+				},
+			},
+			HeaderPattern: "^(\\w*)(?:\\(([\\w\\$\\.\\-\\*\\s]*)\\))?\\:\\s(.*)$",
+			HeaderPatternMaps: []string{
+				"Type",
+				"Scope",
+				"Subject",
+			},
+			IssuePrefix: []string{
+				"#",
+				"gh-",
+			},
+			RefActions: []string{
+				"close",
+				"closes",
+				"closed",
+				"fix",
+				"fixes",
+				"fixed",
+				"resolve",
+				"resolves",
+				"resolved",
+			},
+			MergePattern: "^Merge pull request #(\\d+) from (.*)$",
+			MergePatternMaps: []string{
+				"Ref",
+				"Source",
+			},
+			RevertPattern: "^Revert\\s\"([\\s\\S]*)\"\\s*This reverts commit (\\w*)\\.",
+			RevertPatternMaps: []string{
+				"Subject",
+				"Hash",
+			},
+			NoteKeywords: []string{
+				"BREAKING CHANGE",
+			},
+		},
+	})
+
+	commits, err := parser.Parse("HEAD")
+	assert.Nil(err)
+	assert.Equal([]*Commit{
+		&Commit{
+			Hash: &Hash{
+				Long:  "65cf1add9735dcc4810dda3312b0792236c97c4e",
+				Short: "65cf1add",
+			},
+			Author: &Author{
+				Name:  "tsuyoshi wada",
+				Email: "mail@example.com",
+				Date:  time.Unix(int64(1514808000), 0),
+			},
+			Committer: &Committer{
+				Name:  "tsuyoshi wada",
+				Email: "mail@example.com",
+				Date:  time.Unix(int64(1514808000), 0),
+			},
+			Merge:  nil,
+			Revert: nil,
+			Refs: []*Ref{
+				&Ref{
+					Action: "",
+					Ref:    "123",
+					Source: "",
+				},
+			},
+			Notes:    []*Note{},
+			Mentions: []string{},
+			Header:   "feat(*): Add new feature #123",
+			Type:     "feat",
+			Scope:    "*",
+			Subject:  "Add new feature #123",
+			Body:     "",
+		},
+		&Commit{
+			Hash: &Hash{
+				Long:  "14ef0b6d386c5432af9292eab3c8314fa3001bc7",
+				Short: "14ef0b6d",
+			},
+			Author: &Author{
+				Name:  "tsuyoshi wada",
+				Email: "mail@example.com",
+				Date:  time.Unix(int64(1515153600), 0),
+			},
+			Committer: &Committer{
+				Name:  "tsuyoshi wada",
+				Email: "mail@example.com",
+				Date:  time.Unix(int64(1515153600), 0),
+			},
+			Merge: &Merge{
+				Ref:    "3",
+				Source: "username/branchname",
+			},
+			Revert: nil,
+			Refs: []*Ref{
+				&Ref{
+					Action: "",
+					Ref:    "3",
+					Source: "",
+				},
+				&Ref{
+					Action: "Fixes",
+					Ref:    "3",
+					Source: "",
+				},
+				&Ref{
+					Action: "Closes",
+					Ref:    "1",
+					Source: "",
+				},
+			},
+			Notes: []*Note{
+				&Note{
+					Title: "BREAKING CHANGE",
+					Body:  "This is breaking point message.",
+				},
+			},
+			Mentions: []string{},
+			Header:   "Merge pull request #3 from username/branchname",
+			Type:     "",
+			Scope:    "",
+			Subject:  "",
+			Body: `This is body message.
+
+Fixes #3
+
+Closes #1
+
+BREAKING CHANGE: This is breaking point message.`,
+		},
+		&Commit{
+			Hash: &Hash{
+				Long:  "809a8280ffd0dadb0f4e7ba9fc835e63c37d6af6",
+				Short: "809a8280",
+			},
+			Author: &Author{
+				Name:  "tsuyoshi wada",
+				Email: "mail@example.com",
+				Date:  time.Unix(int64(1517486400), 0),
+			},
+			Committer: &Committer{
+				Name:  "tsuyoshi wada",
+				Email: "mail@example.com",
+				Date:  time.Unix(int64(1517486400), 0),
+			},
+			Merge:  nil,
+			Revert: nil,
+			Refs:   []*Ref{},
+			Notes:  []*Note{},
+			Mentions: []string{
+				"tsuyoshiwada",
+				"hogefuga",
+				"FooBarBaz",
+			},
+			Header:  "fix(controller): Fix cors configure",
+			Type:    "fix",
+			Scope:   "controller",
+			Subject: "Fix cors configure",
+			Body: `Has mention body
+
+@tsuyoshiwada
+@hogefuga
+@FooBarBaz`,
+		},
+		&Commit{
+			Hash: &Hash{
+				Long:  "74824d6bd1470b901ec7123d13a76a1b8938d8d0",
+				Short: "74824d6b",
+			},
+			Author: &Author{
+				Name:  "tsuyoshi wada",
+				Email: "mail@example.com",
+				Date:  time.Unix(int64(1517488587), 0),
+			},
+			Committer: &Committer{
+				Name:  "tsuyoshi wada",
+				Email: "mail@example.com",
+				Date:  time.Unix(int64(1517488587), 0),
+			},
+			Merge:  nil,
+			Revert: nil,
+			Refs: []*Ref{
+				&Ref{
+					Action: "Fixes",
+					Ref:    "123",
+					Source: "",
+				},
+				&Ref{
+					Action: "Closes",
+					Ref:    "456",
+					Source: "username/repository",
+				},
+			},
+			Notes: []*Note{
+				&Note{
+					Title: "BREAKING CHANGE",
+					Body: `This is multiline breaking change note.
+It is treated as the body of the Note until a mention or reference appears.
+
+We also allow blank lines :)`,
+				},
+			},
+			Mentions: []string{},
+			Header:   "fix(model): Remove hoge attributes",
+			Type:     "fix",
+			Scope:    "model",
+			Subject:  "Remove hoge attributes",
+			Body: `This mixed body message.
+
+BREAKING CHANGE:
+This is multiline breaking change note.
+It is treated as the body of the Note until a mention or reference appears.
+
+We also allow blank lines :)
+
+Fixes #123
+Closes username/repository#456`,
+		},
+	}, commits)
+}

errors.go

@@ -0,0 +1 @@
+package chglog

fields.go

@@ -0,0 +1,92 @@
+package chglog
+
+import "time"
+
+// Hash of commit
+type Hash struct {
+	Long  string
+	Short string
+}
+
+// Author of commit
+type Author struct {
+	Name  string
+	Email string
+	Date  time.Time
+}
+
+// Committer of commit
+type Committer struct {
+	Name  string
+	Email string
+	Date  time.Time
+}
+
+// Merge ...
+type Merge struct {
+	Ref    string
+	Source string
+}
+
+// Revert ...
+type Revert struct {
+	Raw     string
+	Subject string
+	Hash    string
+}
+
+// Ref ...
+type Ref struct {
+	Action string
+	Ref    string
+	Source string
+}
+
+// Note ...
+type Note struct {
+	Title string
+	Body  string
+}
+
+// NoteGroup ...
+type NoteGroup struct {
+	Title string
+	Notes []*Note
+}
+
+// Commit data
+type Commit struct {
+	Hash      *Hash
+	Author    *Author
+	Committer *Committer
+	Merge     *Merge
+	Revert    *Revert
+	Refs      []*Ref
+	Notes     []*Note
+	Mentions  []string
+	Header    string
+	Type      string
+	Scope     string
+	Subject   string
+	Body      string
+}
+
+// CommitGroup is group of commit
+type CommitGroup struct {
+	RawTitle string
+	Title    string
+	Commits  []*Commit
+}
+
+// Tag ...
+type Tag struct {
+	Name string
+	Date time.Time
+}
+
+// Version ...
+type Version struct {
+	Tag          *Tag
+	CommitGroups []*CommitGroup
+	NoteGroups   []*NoteGroup
+}

fixtures/gitlog.txt

@@ -0,0 +1,24 @@
+@@__CHGLOG__@@HASH:65cf1add9735dcc4810dda3312b0792236c97c4e	65cf1add@@__CHGLOG_DELIMITER__@@AUTHOR:tsuyoshi wada	mail@example.com	1514808000@@__CHGLOG_DELIMITER__@@COMMITTER:tsuyoshi wada	mail@example.com	1514808000@@__CHGLOG_DELIMITER__@@SUBJECT:feat(*): Add new feature #123@@__CHGLOG_DELIMITER__@@BODY:
+
+@@__CHGLOG__@@HASH:14ef0b6d386c5432af9292eab3c8314fa3001bc7	14ef0b6d@@__CHGLOG_DELIMITER__@@AUTHOR:tsuyoshi wada	mail@example.com	1515153600@@__CHGLOG_DELIMITER__@@COMMITTER:tsuyoshi wada	mail@example.com	1515153600@@__CHGLOG_DELIMITER__@@SUBJECT:Merge pull request #3 from username/branchname@@__CHGLOG_DELIMITER__@@BODY:This is body message.
+
+Fixes #3
+
+Closes #1
+
+BREAKING CHANGE: This is breaking point message.
+@@__CHGLOG__@@HASH:809a8280ffd0dadb0f4e7ba9fc835e63c37d6af6	809a8280@@__CHGLOG_DELIMITER__@@AUTHOR:tsuyoshi wada	mail@example.com	1517486400@@__CHGLOG_DELIMITER__@@COMMITTER:tsuyoshi wada	mail@example.com	1517486400@@__CHGLOG_DELIMITER__@@SUBJECT:fix(controller): Fix cors configure@@__CHGLOG_DELIMITER__@@BODY:Has mention body
+
+@tsuyoshiwada
+@hogefuga
+@FooBarBaz
+@@__CHGLOG__@@HASH:74824d6bd1470b901ec7123d13a76a1b8938d8d0	74824d6b@@__CHGLOG_DELIMITER__@@AUTHOR:tsuyoshi wada	mail@example.com	1517488587@@__CHGLOG_DELIMITER__@@COMMITTER:tsuyoshi wada	mail@example.com	1517488587@@__CHGLOG_DELIMITER__@@SUBJECT:fix(model): Remove hoge attributes@@__CHGLOG_DELIMITER__@@BODY:This mixed body message.
+
+BREAKING CHANGE:
+This is multiline breaking change note.
+It is treated as the body of the Note until a mention or reference appears.
+
+We also allow blank lines :)
+
+Fixes #123
+Closes username/repository#456

mock_test.go

@@ -0,0 +1,12 @@
+package chglog
+
+import gitcmd "github.com/tsuyoshiwada/go-gitcmd"
+
+type mockClient struct {
+	gitcmd.Client
+	ReturnExec func(string, ...string) (string, error)
+}
+
+func (m *mockClient) Exec(subcmd string, args ...string) (string, error) {
+	return m.ReturnExec(subcmd, args...)
+}

processor.go

@@ -0,0 +1,68 @@
+package chglog
+
+import (
+	"regexp"
+	"strings"
+)
+
+// Processor ...
+type Processor interface {
+	Bootstrap(*Config)
+	ProcessCommit(*Commit) *Commit
+}
+
+// PlainProcessor ...
+type PlainProcessor struct{}
+
+// Bootstrap ...
+func (*PlainProcessor) Bootstrap(config *Config) {}
+
+// ProcessCommit ...
+func (*PlainProcessor) ProcessCommit(commit *Commit) *Commit {
+	return commit
+}
+
+// GitHubProcessor ...
+type GitHubProcessor struct {
+	Host      string
+	config    *Config
+	reMention *regexp.Regexp
+	reIssue   *regexp.Regexp
+}
+
+// Bootstrap ...
+func (p *GitHubProcessor) Bootstrap(config *Config) {
+	p.config = config
+
+	if p.Host == "" {
+		p.Host = "https://github.com"
+	} else {
+		p.Host = strings.TrimRight(p.Host, "/")
+	}
+
+	p.reMention = regexp.MustCompile("@(\\w+)")
+	p.reIssue = regexp.MustCompile("(?i)(#|gh-)(\\d+)")
+}
+
+// ProcessCommit ...
+func (p *GitHubProcessor) ProcessCommit(commit *Commit) *Commit {
+	commit.Header = p.addLinks(commit.Header)
+	commit.Subject = p.addLinks(commit.Subject)
+	commit.Body = p.addLinks(commit.Body)
+	for _, note := range commit.Notes {
+		note.Body = p.addLinks(note.Body)
+	}
+	return commit
+}
+
+func (p *GitHubProcessor) addLinks(input string) string {
+	repoURL := strings.TrimRight(p.config.Info.RepositoryURL, "/")
+
+	// mentions
+	input = p.reMention.ReplaceAllString(input, "[@$1]("+p.Host+"/$1)")
+
+	// issues
+	input = p.reIssue.ReplaceAllString(input, "[$1$2]("+repoURL+"/issues/$2)")
+
+	return input
+}

processor_test.go

@@ -0,0 +1,54 @@
+package chglog
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGitHubProcessor(t *testing.T) {
+	assert := assert.New(t)
+
+	config := &Config{
+		Info: &Info{
+			RepositoryURL: "https://example.com",
+		},
+	}
+
+	processor := &GitHubProcessor{}
+
+	processor.Bootstrap(config)
+
+	assert.Equal(
+		&Commit{
+			Header:  "message [@foo](https://github.com/foo) [#123](https://example.com/issues/123)",
+			Subject: "message [@foo](https://github.com/foo) [#123](https://example.com/issues/123)",
+			Body: `issue [#456](https://example.com/issues/456)
+multiline [#789](https://example.com/issues/789)
+[@foo](https://github.com/foo), [@bar](https://github.com/bar)`,
+			Notes: []*Note{
+				&Note{
+					Body: `issue1 [#11](https://example.com/issues/11)
+issue2 [#22](https://example.com/issues/22)
+[gh-56](https://example.com/issues/56) hoge fuga`,
+				},
+			},
+		},
+		processor.ProcessCommit(
+			&Commit{
+				Header:  "message @foo #123",
+				Subject: "message @foo #123",
+				Body: `issue #456
+multiline #789
+@foo, @bar`,
+				Notes: []*Note{
+					&Note{
+						Body: `issue1 #11
+issue2 #22
+gh-56 hoge fuga`,
+					},
+				},
+			},
+		),
+	)
+}

tag_reader.go

@@ -0,0 +1,65 @@
+package chglog
+
+import (
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+
+	gitcmd "github.com/tsuyoshiwada/go-gitcmd"
+)
+
+type tagReader struct {
+	client gitcmd.Client
+	format string
+	reTag  *regexp.Regexp
+}
+
+func newTagReader(client gitcmd.Client) *tagReader {
+	return &tagReader{
+		client: client,
+		reTag:  regexp.MustCompile("tag: ([\\w\\.\\-_]+),?"),
+	}
+}
+
+func (r *tagReader) ReadAll() ([]*Tag, error) {
+	out, err := r.client.Exec(
+		"log",
+		"--tags",
+		"--simplify-by-decoration",
+		"--pretty=%D\t%at",
+	)
+
+	tags := []*Tag{}
+
+	if err != nil {
+		return tags, err
+	}
+
+	lines := strings.Split(out, "\n")
+
+	for _, line := range lines {
+		if line == "" {
+			continue
+		}
+
+		tokens := strings.Split(line, "\t")
+
+		res := r.reTag.FindAllStringSubmatch(tokens[0], -1)
+		if len(res) == 0 {
+			continue
+		}
+
+		ts, err := strconv.Atoi(tokens[1])
+		if err != nil {
+			continue
+		}
+
+		tags = append(tags, &Tag{
+			Name: res[0][1],
+			Date: time.Unix(int64(ts), 0),
+		})
+	}
+
+	return tags, nil
+}

tag_reader_test.go

@@ -0,0 +1,48 @@
+package chglog
+
+import (
+	"errors"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestTagReader(t *testing.T) {
+	assert := assert.New(t)
+	client := &mockClient{
+		ReturnExec: func(subcmd string, args ...string) (string, error) {
+			if subcmd != "log" {
+				return "", errors.New("")
+			}
+			return strings.Join([]string{
+				"",
+				"tag: v5.2.0-beta.1, origin/labs/router\t1518023112",
+				"tag: 2.0.0\t1517875200",
+				"tag: v2.0.4-rc.1\t1517788800",
+				"tag: 2.0.4-beta.1\t1517702400",
+				"tag: hoge_fuga\t1517616000",
+				"tag: 1.9.29-alpha.0\t1517529600",
+				"hoge\t0",
+				"foo\t0",
+			}, "\n"), nil
+		},
+	}
+
+	res, err := newTagReader(client).ReadAll()
+	assert.Nil(err)
+
+	actual := make([]string, len(res))
+	for i, tag := range res {
+		actual[i] = tag.Name
+	}
+
+	assert.Equal([]string{
+		"v5.2.0-beta.1",
+		"2.0.0",
+		"v2.0.4-rc.1",
+		"2.0.4-beta.1",
+		"hoge_fuga",
+		"1.9.29-alpha.0",
+	}, actual)
+}

tag_selector.go

@@ -0,0 +1,140 @@
+package chglog
+
+import (
+	"errors"
+	"strings"
+)
+
+// TODO
+var (
+	errNotFound = errors.New("todo: not found")
+	errParse    = errors.New("todo: parse error")
+)
+
+type tagSelector struct{}
+
+func newTagSelector() *tagSelector {
+	return &tagSelector{}
+}
+
+func (s *tagSelector) Select(tags []*Tag, query string) ([]*Tag, string, error) {
+	tokens := strings.Split(query, "..")
+
+	switch len(tokens) {
+	case 1:
+		return s.selectSingleTag(tags, tokens[0])
+	case 2:
+		old := tokens[0]
+		new := tokens[1]
+		if old == "" && new == "" {
+			return nil, "", nil
+		} else if old == "" {
+			return s.selectBeforeTags(tags, new)
+		} else if new == "" {
+			return s.selectAfterTags(tags, old)
+		}
+		return s.selectRangeTags(tags, tokens[0], tokens[1])
+	}
+
+	return nil, "", errParse
+}
+
+func (s *tagSelector) selectSingleTag(tags []*Tag, token string) ([]*Tag, string, error) {
+	var from string
+
+	for i, tag := range tags {
+		if tag.Name == token {
+			if i+1 < len(tags) {
+				from = tags[i+1].Name
+			}
+			return []*Tag{tag}, from, nil
+		}
+	}
+
+	return nil, "", nil
+}
+
+func (*tagSelector) selectBeforeTags(tags []*Tag, token string) ([]*Tag, string, error) {
+	var (
+		res    []*Tag
+		from   string
+		enable bool
+	)
+
+	for i, tag := range tags {
+		if tag.Name == token {
+			enable = true
+		}
+
+		if enable {
+			res = append(res, tag)
+			from = ""
+			if i+1 < len(tags) {
+				from = tags[i+1].Name
+			}
+		}
+	}
+
+	if len(res) == 0 {
+		return res, "", errNotFound
+	}
+
+	return res, from, nil
+}
+
+func (*tagSelector) selectAfterTags(tags []*Tag, token string) ([]*Tag, string, error) {
+	var (
+		res  []*Tag
+		from string
+	)
+
+	for i, tag := range tags {
+		res = append(res, tag)
+		from = ""
+		if i+1 < len(tags) {
+			from = tags[i+1].Name
+		}
+
+		if tag.Name == token {
+			break
+		}
+	}
+
+	if len(res) == 0 {
+		return res, "", errNotFound
+	}
+
+	return res, from, nil
+}
+
+func (s *tagSelector) selectRangeTags(tags []*Tag, old string, new string) ([]*Tag, string, error) {
+	var (
+		res    []*Tag
+		from   string
+		enable bool
+	)
+
+	for i, tag := range tags {
+		if tag.Name == new {
+			enable = true
+		}
+
+		if enable {
+			from = ""
+			if i+1 < len(tags) {
+				from = tags[i+1].Name
+			}
+			res = append(res, tag)
+		}
+
+		if tag.Name == old {
+			enable = false
+		}
+	}
+
+	if len(res) == 0 {
+		return res, "", errNotFound
+	}
+
+	return res, from, nil
+}

tag_selector_test.go

@@ -0,0 +1,101 @@
+package chglog
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestTagSelector(t *testing.T) {
+	assert := assert.New(t)
+	assert.True(true)
+	selector := newTagSelector()
+
+	fixtures := []*Tag{
+		&Tag{Name: "2.2.12-rc.12"},
+		&Tag{Name: "2.1.0"},
+		&Tag{Name: "v2.0.0-beta.1"},
+		&Tag{Name: "v1.2.9"},
+		&Tag{Name: "v1.0.0"},
+	}
+
+	table := map[string][]string{
+		// Single
+		"2.2.12-rc.12": []string{
+			"2.2.12-rc.12",
+			"2.1.0",
+		},
+		"v2.0.0-beta.1": []string{
+			"v2.0.0-beta.1",
+			"v1.2.9",
+		},
+		"v1.0.0": []string{
+			"v1.0.0",
+			"",
+		},
+		// ~ <tag>
+		"..2.1.0": []string{
+			"2.1.0",
+			"v2.0.0-beta.1",
+			"v1.2.9",
+			"v1.0.0",
+			"",
+		},
+		"..v1.0.0": []string{
+			"v1.0.0",
+			"",
+		},
+		// <tag> ~
+		"v2.0.0-beta.1..": []string{
+			"2.2.12-rc.12",
+			"2.1.0",
+			"v2.0.0-beta.1",
+			"v1.2.9",
+		},
+		"2.2.12-rc.12..": []string{
+			"2.2.12-rc.12",
+			"2.1.0",
+		},
+		"v1.0.0..": []string{
+			"2.2.12-rc.12",
+			"2.1.0",
+			"v2.0.0-beta.1",
+			"v1.2.9",
+			"v1.0.0",
+			"",
+		},
+		// <tag> ~ <tag>
+		"v1.0.0..2.2.12-rc.12": []string{
+			"2.2.12-rc.12",
+			"2.1.0",
+			"v2.0.0-beta.1",
+			"v1.2.9",
+			"v1.0.0",
+			"",
+		},
+		"v1.0.0..v2.0.0-beta.1": []string{
+			"v2.0.0-beta.1",
+			"v1.2.9",
+			"v1.0.0",
+			"",
+		},
+		"v1.2.9..2.1.0": []string{
+			"2.1.0",
+			"v2.0.0-beta.1",
+			"v1.2.9",
+			"v1.0.0",
+		},
+	}
+
+	for query, expected := range table {
+		list, from, err := selector.Select(fixtures, query)
+		actual := make([]string, len(list))
+		for i, tag := range list {
+			actual[i] = tag.Name
+		}
+
+		assert.Nil(err)
+		assert.Equal(expected[0:len(expected)-1], actual)
+		assert.Equal(expected[len(expected)-1], from)
+	}
+}

utils.go

@@ -0,0 +1,106 @@
+package chglog
+
+import (
+	"errors"
+	"reflect"
+	"strings"
+	"time"
+)
+
+func dotGet(target interface{}, prop string) (interface{}, bool) {
+	path := strings.Split(prop, ".")
+
+	if len(path) == 0 {
+		return nil, false
+	}
+
+	for _, key := range path {
+		var value reflect.Value
+
+		if reflect.TypeOf(target).Kind() == reflect.Ptr {
+			value = reflect.ValueOf(target).Elem()
+		} else {
+			value = reflect.ValueOf(target)
+		}
+
+		field := value.FieldByName(strings.Title(key))
+		if !field.IsValid() {
+			return nil, false
+		}
+
+		target = field.Interface()
+	}
+
+	return target, true
+}
+
+// TODO: dotSet ...
+
+func assignDynamicValues(target interface{}, attrs []string, values []string) {
+	rv := reflect.ValueOf(target).Elem()
+	rt := rv.Type()
+
+	for i, field := range attrs {
+		if f, ok := rt.FieldByName(field); ok {
+			rv.FieldByIndex(f.Index).SetString(values[i])
+		}
+	}
+}
+
+func compare(a interface{}, operator string, b interface{}) (bool, error) {
+	at := reflect.TypeOf(a).String()
+	bt := reflect.TypeOf(a).String()
+	if at != bt {
+		return false, errors.New("todo: not match type")
+	}
+
+	switch at {
+	case "string":
+		aa := a.(string)
+		bb := b.(string)
+		return compareString(aa, operator, bb), nil
+	case "int":
+		aa := a.(int)
+		bb := b.(int)
+		return compareInt(aa, operator, bb), nil
+	case "time.Time":
+		aa := a.(time.Time)
+		bb := b.(time.Time)
+		return compareTime(aa, operator, bb), nil
+	}
+
+	return false, nil
+}
+
+func compareString(a string, operator string, b string) bool {
+	switch operator {
+	case "<":
+		return a < b
+	case ">":
+		return a > b
+	default:
+		return false
+	}
+}
+
+func compareInt(a int, operator string, b int) bool {
+	switch operator {
+	case "<":
+		return a < b
+	case ">":
+		return a > b
+	default:
+		return false
+	}
+}
+
+func compareTime(a time.Time, operator string, b time.Time) bool {
+	switch operator {
+	case "<":
+		return !a.After(b)
+	case ">":
+		return a.After(b)
+	default:
+		return false
+	}
+}

utils_test.go

@@ -0,0 +1,110 @@
+package chglog
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestDotGet(t *testing.T) {
+	assert := assert.New(t)
+	now := time.Now()
+
+	type Nest struct {
+		Str  string
+		Int  int
+		Time time.Time
+	}
+
+	type Sample struct {
+		Str  string
+		Int  int
+		Date time.Time
+		Nest Nest
+	}
+
+	sample := Sample{
+		Str:  "sample_string",
+		Int:  12,
+		Date: now,
+		Nest: Nest{
+			Str:  "nest_string",
+			Int:  34,
+			Time: now,
+		},
+	}
+
+	var val interface{}
+	var ok bool
+
+	// .Str
+	val, ok = dotGet(&sample, "Str")
+	assert.True(ok)
+	assert.Equal(val, "sample_string")
+
+	// Lowercase
+	val, ok = dotGet(&sample, "str")
+	assert.True(ok)
+	assert.Equal(val, "sample_string")
+
+	// Int
+	val, ok = dotGet(&sample, "Int")
+	assert.True(ok)
+	assert.Equal(val, 12)
+
+	// Time
+	val, ok = dotGet(&sample, "Date")
+	assert.True(ok)
+	assert.Equal(val, now)
+
+	// Nest
+	val, ok = dotGet(&sample, "Nest.Str")
+	assert.True(ok)
+	assert.Equal(val, "nest_string")
+
+	val, ok = dotGet(&sample, "Nest.Int")
+	assert.True(ok)
+	assert.Equal(val, 34)
+
+	val, ok = dotGet(&sample, "Nest.Time")
+	assert.True(ok)
+	assert.Equal(val, now)
+
+	val, ok = dotGet(&sample, "nest.int")
+	assert.True(ok)
+	assert.Equal(val, 34)
+
+	// Notfound
+	val, ok = dotGet(&sample, "not.found")
+	assert.False(ok)
+	assert.Nil(val)
+}
+
+func TestCompare(t *testing.T) {
+	assert := assert.New(t)
+
+	type sample struct {
+		a        interface{}
+		op       string
+		b        interface{}
+		expected bool
+	}
+
+	table := []sample{
+		{0, "<", 1, true},
+		{0, ">", 1, false},
+		{1, ">", 0, true},
+		{1, "<", 0, false},
+		{"a", "<", "b", true},
+		{"a", ">", "b", false},
+		{time.Unix(1518018017, 0), "<", time.Unix(1518018043, 0), true},
+		{time.Unix(1518018017, 0), ">", time.Unix(1518018043, 0), false},
+	}
+
+	for _, sa := range table {
+		actual, err := compare(sa.a, sa.op, sa.b)
+		assert.Nil(err)
+		assert.Equal(sa.expected, actual)
+	}
+}

vendor/github.com/davecgh/go-spew/.gitignore

@@ -0,0 +1,22 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe

vendor/github.com/davecgh/go-spew/.travis.yml

@@ -0,0 +1,14 @@
+language: go
+go:
+    - 1.5.4
+    - 1.6.3
+    - 1.7
+install:
+    - go get -v golang.org/x/tools/cmd/cover
+script:
+    - go test -v -tags=safe ./spew
+    - go test -v -tags=testcgo ./spew -covermode=count -coverprofile=profile.cov
+after_success:
+    - go get -v github.com/mattn/goveralls
+    - export PATH=$PATH:$HOME/gopath/bin
+    - goveralls -coverprofile=profile.cov -service=travis-ci

vendor/github.com/davecgh/go-spew/LICENSE

@@ -0,0 +1,15 @@
+ISC License
+
+Copyright (c) 2012-2016 Dave Collins <dave@davec.name>
+
+Permission to use, copy, modify, and distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

vendor/github.com/davecgh/go-spew/README.md

@@ -0,0 +1,205 @@
+go-spew
+=======
+
+[![Build Status](https://img.shields.io/travis/davecgh/go-spew.svg)]
+(https://travis-ci.org/davecgh/go-spew) [![ISC License]
+(http://img.shields.io/badge/license-ISC-blue.svg)](http://copyfree.org) [![Coverage Status]
+(https://img.shields.io/coveralls/davecgh/go-spew.svg)]
+(https://coveralls.io/r/davecgh/go-spew?branch=master)
+
+
+Go-spew implements a deep pretty printer for Go data structures to aid in
+debugging.  A comprehensive suite of tests with 100% test coverage is provided
+to ensure proper functionality.  See `test_coverage.txt` for the gocov coverage
+report.  Go-spew is licensed under the liberal ISC license, so it may be used in
+open source or commercial projects.
+
+If you're interested in reading about how this package came to life and some
+of the challenges involved in providing a deep pretty printer, there is a blog
+post about it
+[here](https://web.archive.org/web/20160304013555/https://blog.cyphertite.com/go-spew-a-journey-into-dumping-go-data-structures/).
+
+## Documentation
+
+[![GoDoc](https://img.shields.io/badge/godoc-reference-blue.svg)]
+(http://godoc.org/github.com/davecgh/go-spew/spew)
+
+Full `go doc` style documentation for the project can be viewed online without
+installing this package by using the excellent GoDoc site here:
+http://godoc.org/github.com/davecgh/go-spew/spew
+
+You can also view the documentation locally once the package is installed with
+the `godoc` tool by running `godoc -http=":6060"` and pointing your browser to
+http://localhost:6060/pkg/github.com/davecgh/go-spew/spew
+
+## Installation
+
+```bash
+$ go get -u github.com/davecgh/go-spew/spew
+```
+
+## Quick Start
+
+Add this import line to the file you're working in:
+
+```Go
+import "github.com/davecgh/go-spew/spew"
+```
+
+To dump a variable with full newlines, indentation, type, and pointer
+information use Dump, Fdump, or Sdump:
+
+```Go
+spew.Dump(myVar1, myVar2, ...)
+spew.Fdump(someWriter, myVar1, myVar2, ...)
+str := spew.Sdump(myVar1, myVar2, ...)
+```
+
+Alternatively, if you would prefer to use format strings with a compacted inline
+printing style, use the convenience wrappers Printf, Fprintf, etc with %v (most
+compact), %+v (adds pointer addresses), %#v (adds types), or %#+v (adds types
+and pointer addresses): 
+
+```Go
+spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+spew.Fprintf(someWriter, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+spew.Fprintf(someWriter, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+```
+
+## Debugging a Web Application Example
+
+Here is an example of how you can use `spew.Sdump()` to help debug a web application. Please be sure to wrap your output using the `html.EscapeString()` function for safety reasons. You should also only use this debugging technique in a development environment, never in production.
+
+```Go
+package main
+
+import (
+    "fmt"
+    "html"
+    "net/http"
+
+    "github.com/davecgh/go-spew/spew"
+)
+
+func handler(w http.ResponseWriter, r *http.Request) {
+    w.Header().Set("Content-Type", "text/html")
+    fmt.Fprintf(w, "Hi there, %s!", r.URL.Path[1:])
+    fmt.Fprintf(w, "<!--\n" + html.EscapeString(spew.Sdump(w)) + "\n-->")
+}
+
+func main() {
+    http.HandleFunc("/", handler)
+    http.ListenAndServe(":8080", nil)
+}
+```
+
+## Sample Dump Output
+
+```
+(main.Foo) {
+ unexportedField: (*main.Bar)(0xf84002e210)({
+  flag: (main.Flag) flagTwo,
+  data: (uintptr) <nil>
+ }),
+ ExportedField: (map[interface {}]interface {}) {
+  (string) "one": (bool) true
+ }
+}
+([]uint8) {
+ 00000000  11 12 13 14 15 16 17 18  19 1a 1b 1c 1d 1e 1f 20  |............... |
+ 00000010  21 22 23 24 25 26 27 28  29 2a 2b 2c 2d 2e 2f 30  |!"#$%&'()*+,-./0|
+ 00000020  31 32                                             |12|
+}
+```
+
+## Sample Formatter Output
+
+Double pointer to a uint8:
+```
+	  %v: <**>5
+	 %+v: <**>(0xf8400420d0->0xf8400420c8)5
+	 %#v: (**uint8)5
+	%#+v: (**uint8)(0xf8400420d0->0xf8400420c8)5
+```
+
+Pointer to circular struct with a uint8 field and a pointer to itself:
+```
+	  %v: <*>{1 <*><shown>}
+	 %+v: <*>(0xf84003e260){ui8:1 c:<*>(0xf84003e260)<shown>}
+	 %#v: (*main.circular){ui8:(uint8)1 c:(*main.circular)<shown>}
+	%#+v: (*main.circular)(0xf84003e260){ui8:(uint8)1 c:(*main.circular)(0xf84003e260)<shown>}
+```
+
+## Configuration Options
+
+Configuration of spew is handled by fields in the ConfigState type. For
+convenience, all of the top-level functions use a global state available via the
+spew.Config global.
+
+It is also possible to create a ConfigState instance that provides methods
+equivalent to the top-level functions. This allows concurrent configuration
+options. See the ConfigState documentation for more details.
+
+```
+* Indent
+	String to use for each indentation level for Dump functions.
+	It is a single space by default.  A popular alternative is "\t".
+
+* MaxDepth
+	Maximum number of levels to descend into nested data structures.
+	There is no limit by default.
+
+* DisableMethods
+	Disables invocation of error and Stringer interface methods.
+	Method invocation is enabled by default.
+
+* DisablePointerMethods
+	Disables invocation of error and Stringer interface methods on types
+	which only accept pointer receivers from non-pointer variables.  This option
+	relies on access to the unsafe package, so it will not have any effect when
+	running in environments without access to the unsafe package such as Google
+	App Engine or with the "safe" build tag specified.
+	Pointer method invocation is enabled by default.
+
+* DisablePointerAddresses
+	DisablePointerAddresses specifies whether to disable the printing of
+	pointer addresses. This is useful when diffing data structures in tests.
+
+* DisableCapacities
+	DisableCapacities specifies whether to disable the printing of capacities
+	for arrays, slices, maps and channels. This is useful when diffing data
+	structures in tests.
+
+* ContinueOnMethod
+	Enables recursion into types after invoking error and Stringer interface
+	methods. Recursion after method invocation is disabled by default.
+
+* SortKeys
+	Specifies map keys should be sorted before being printed. Use
+	this to have a more deterministic, diffable output.  Note that
+	only native types (bool, int, uint, floats, uintptr and string)
+	and types which implement error or Stringer interfaces are supported,
+	with other types sorted according to the reflect.Value.String() output
+	which guarantees display stability.  Natural map order is used by
+	default.
+
+* SpewKeys
+	SpewKeys specifies that, as a last resort attempt, map keys should be
+	spewed to strings and sorted by those strings.  This is only considered
+	if SortKeys is true.
+
+```
+
+## Unsafe Package Dependency
+
+This package relies on the unsafe package to perform some of the more advanced
+features, however it also supports a "limited" mode which allows it to work in
+environments where the unsafe package is not available.  By default, it will
+operate in this mode on Google App Engine and when compiled with GopherJS.  The
+"safe" build tag may also be specified to force the package to build without
+using the unsafe package.
+
+## License
+
+Go-spew is licensed under the [copyfree](http://copyfree.org) ISC License.

vendor/github.com/davecgh/go-spew/cov_report.sh

@@ -0,0 +1,22 @@
+#!/bin/sh
+
+# This script uses gocov to generate a test coverage report.
+# The gocov tool my be obtained with the following command:
+#   go get github.com/axw/gocov/gocov
+#
+# It will be installed to $GOPATH/bin, so ensure that location is in your $PATH.
+
+# Check for gocov.
+if ! type gocov >/dev/null 2>&1; then
+	echo >&2 "This script requires the gocov tool."
+	echo >&2 "You may obtain it with the following command:"
+	echo >&2 "go get github.com/axw/gocov/gocov"
+	exit 1
+fi
+
+# Only run the cgo tests if gcc is installed.
+if type gcc >/dev/null 2>&1; then
+	(cd spew && gocov test -tags testcgo | gocov report)
+else
+	(cd spew && gocov test | gocov report)
+fi

vendor/github.com/davecgh/go-spew/spew/bypass.go

@@ -0,0 +1,152 @@
+// Copyright (c) 2015-2016 Dave Collins <dave@davec.name>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+// NOTE: Due to the following build constraints, this file will only be compiled
+// when the code is not running on Google App Engine, compiled by GopherJS, and
+// "-tags safe" is not added to the go build command line.  The "disableunsafe"
+// tag is deprecated and thus should not be used.
+// +build !js,!appengine,!safe,!disableunsafe
+
+package spew
+
+import (
+	"reflect"
+	"unsafe"
+)
+
+const (
+	// UnsafeDisabled is a build-time constant which specifies whether or
+	// not access to the unsafe package is available.
+	UnsafeDisabled = false
+
+	// ptrSize is the size of a pointer on the current arch.
+	ptrSize = unsafe.Sizeof((*byte)(nil))
+)
+
+var (
+	// offsetPtr, offsetScalar, and offsetFlag are the offsets for the
+	// internal reflect.Value fields.  These values are valid before golang
+	// commit ecccf07e7f9d which changed the format.  The are also valid
+	// after commit 82f48826c6c7 which changed the format again to mirror
+	// the original format.  Code in the init function updates these offsets
+	// as necessary.
+	offsetPtr    = uintptr(ptrSize)
+	offsetScalar = uintptr(0)
+	offsetFlag   = uintptr(ptrSize * 2)
+
+	// flagKindWidth and flagKindShift indicate various bits that the
+	// reflect package uses internally to track kind information.
+	//
+	// flagRO indicates whether or not the value field of a reflect.Value is
+	// read-only.
+	//
+	// flagIndir indicates whether the value field of a reflect.Value is
+	// the actual data or a pointer to the data.
+	//
+	// These values are valid before golang commit 90a7c3c86944 which
+	// changed their positions.  Code in the init function updates these
+	// flags as necessary.
+	flagKindWidth = uintptr(5)
+	flagKindShift = uintptr(flagKindWidth - 1)
+	flagRO        = uintptr(1 << 0)
+	flagIndir     = uintptr(1 << 1)
+)
+
+func init() {
+	// Older versions of reflect.Value stored small integers directly in the
+	// ptr field (which is named val in the older versions).  Versions
+	// between commits ecccf07e7f9d and 82f48826c6c7 added a new field named
+	// scalar for this purpose which unfortunately came before the flag
+	// field, so the offset of the flag field is different for those
+	// versions.
+	//
+	// This code constructs a new reflect.Value from a known small integer
+	// and checks if the size of the reflect.Value struct indicates it has
+	// the scalar field. When it does, the offsets are updated accordingly.
+	vv := reflect.ValueOf(0xf00)
+	if unsafe.Sizeof(vv) == (ptrSize * 4) {
+		offsetScalar = ptrSize * 2
+		offsetFlag = ptrSize * 3
+	}
+
+	// Commit 90a7c3c86944 changed the flag positions such that the low
+	// order bits are the kind.  This code extracts the kind from the flags
+	// field and ensures it's the correct type.  When it's not, the flag
+	// order has been changed to the newer format, so the flags are updated
+	// accordingly.
+	upf := unsafe.Pointer(uintptr(unsafe.Pointer(&vv)) + offsetFlag)
+	upfv := *(*uintptr)(upf)
+	flagKindMask := uintptr((1<<flagKindWidth - 1) << flagKindShift)
+	if (upfv&flagKindMask)>>flagKindShift != uintptr(reflect.Int) {
+		flagKindShift = 0
+		flagRO = 1 << 5
+		flagIndir = 1 << 6
+
+		// Commit adf9b30e5594 modified the flags to separate the
+		// flagRO flag into two bits which specifies whether or not the
+		// field is embedded.  This causes flagIndir to move over a bit
+		// and means that flagRO is the combination of either of the
+		// original flagRO bit and the new bit.
+		//
+		// This code detects the change by extracting what used to be
+		// the indirect bit to ensure it's set.  When it's not, the flag
+		// order has been changed to the newer format, so the flags are
+		// updated accordingly.
+		if upfv&flagIndir == 0 {
+			flagRO = 3 << 5
+			flagIndir = 1 << 7
+		}
+	}
+}
+
+// unsafeReflectValue converts the passed reflect.Value into a one that bypasses
+// the typical safety restrictions preventing access to unaddressable and
+// unexported data.  It works by digging the raw pointer to the underlying
+// value out of the protected value and generating a new unprotected (unsafe)
+// reflect.Value to it.
+//
+// This allows us to check for implementations of the Stringer and error
+// interfaces to be used for pretty printing ordinarily unaddressable and
+// inaccessible values such as unexported struct fields.
+func unsafeReflectValue(v reflect.Value) (rv reflect.Value) {
+	indirects := 1
+	vt := v.Type()
+	upv := unsafe.Pointer(uintptr(unsafe.Pointer(&v)) + offsetPtr)
+	rvf := *(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&v)) + offsetFlag))
+	if rvf&flagIndir != 0 {
+		vt = reflect.PtrTo(v.Type())
+		indirects++
+	} else if offsetScalar != 0 {
+		// The value is in the scalar field when it's not one of the
+		// reference types.
+		switch vt.Kind() {
+		case reflect.Uintptr:
+		case reflect.Chan:
+		case reflect.Func:
+		case reflect.Map:
+		case reflect.Ptr:
+		case reflect.UnsafePointer:
+		default:
+			upv = unsafe.Pointer(uintptr(unsafe.Pointer(&v)) +
+				offsetScalar)
+		}
+	}
+
+	pv := reflect.NewAt(vt, upv)
+	rv = pv
+	for i := 0; i < indirects; i++ {
+		rv = rv.Elem()
+	}
+	return rv
+}

vendor/github.com/davecgh/go-spew/spew/bypasssafe.go

@@ -0,0 +1,38 @@
+// Copyright (c) 2015-2016 Dave Collins <dave@davec.name>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+// NOTE: Due to the following build constraints, this file will only be compiled
+// when the code is running on Google App Engine, compiled by GopherJS, or
+// "-tags safe" is added to the go build command line.  The "disableunsafe"
+// tag is deprecated and thus should not be used.
+// +build js appengine safe disableunsafe
+
+package spew
+
+import "reflect"
+
+const (
+	// UnsafeDisabled is a build-time constant which specifies whether or
+	// not access to the unsafe package is available.
+	UnsafeDisabled = true
+)
+
+// unsafeReflectValue typically converts the passed reflect.Value into a one
+// that bypasses the typical safety restrictions preventing access to
+// unaddressable and unexported data.  However, doing this relies on access to
+// the unsafe package.  This is a stub version which simply returns the passed
+// reflect.Value when the unsafe package is not available.
+func unsafeReflectValue(v reflect.Value) reflect.Value {
+	return v
+}

vendor/github.com/davecgh/go-spew/spew/common.go

@@ -0,0 +1,341 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"reflect"
+	"sort"
+	"strconv"
+)
+
+// Some constants in the form of bytes to avoid string overhead.  This mirrors
+// the technique used in the fmt package.
+var (
+	panicBytes            = []byte("(PANIC=")
+	plusBytes             = []byte("+")
+	iBytes                = []byte("i")
+	trueBytes             = []byte("true")
+	falseBytes            = []byte("false")
+	interfaceBytes        = []byte("(interface {})")
+	commaNewlineBytes     = []byte(",\n")
+	newlineBytes          = []byte("\n")
+	openBraceBytes        = []byte("{")
+	openBraceNewlineBytes = []byte("{\n")
+	closeBraceBytes       = []byte("}")
+	asteriskBytes         = []byte("*")
+	colonBytes            = []byte(":")
+	colonSpaceBytes       = []byte(": ")
+	openParenBytes        = []byte("(")
+	closeParenBytes       = []byte(")")
+	spaceBytes            = []byte(" ")
+	pointerChainBytes     = []byte("->")
+	nilAngleBytes         = []byte("<nil>")
+	maxNewlineBytes       = []byte("<max depth reached>\n")
+	maxShortBytes         = []byte("<max>")
+	circularBytes         = []byte("<already shown>")
+	circularShortBytes    = []byte("<shown>")
+	invalidAngleBytes     = []byte("<invalid>")
+	openBracketBytes      = []byte("[")
+	closeBracketBytes     = []byte("]")
+	percentBytes          = []byte("%")
+	precisionBytes        = []byte(".")
+	openAngleBytes        = []byte("<")
+	closeAngleBytes       = []byte(">")
+	openMapBytes          = []byte("map[")
+	closeMapBytes         = []byte("]")
+	lenEqualsBytes        = []byte("len=")
+	capEqualsBytes        = []byte("cap=")
+)
+
+// hexDigits is used to map a decimal value to a hex digit.
+var hexDigits = "0123456789abcdef"
+
+// catchPanic handles any panics that might occur during the handleMethods
+// calls.
+func catchPanic(w io.Writer, v reflect.Value) {
+	if err := recover(); err != nil {
+		w.Write(panicBytes)
+		fmt.Fprintf(w, "%v", err)
+		w.Write(closeParenBytes)
+	}
+}
+
+// handleMethods attempts to call the Error and String methods on the underlying
+// type the passed reflect.Value represents and outputes the result to Writer w.
+//
+// It handles panics in any called methods by catching and displaying the error
+// as the formatted value.
+func handleMethods(cs *ConfigState, w io.Writer, v reflect.Value) (handled bool) {
+	// We need an interface to check if the type implements the error or
+	// Stringer interface.  However, the reflect package won't give us an
+	// interface on certain things like unexported struct fields in order
+	// to enforce visibility rules.  We use unsafe, when it's available,
+	// to bypass these restrictions since this package does not mutate the
+	// values.
+	if !v.CanInterface() {
+		if UnsafeDisabled {
+			return false
+		}
+
+		v = unsafeReflectValue(v)
+	}
+
+	// Choose whether or not to do error and Stringer interface lookups against
+	// the base type or a pointer to the base type depending on settings.
+	// Technically calling one of these methods with a pointer receiver can
+	// mutate the value, however, types which choose to satisify an error or
+	// Stringer interface with a pointer receiver should not be mutating their
+	// state inside these interface methods.
+	if !cs.DisablePointerMethods && !UnsafeDisabled && !v.CanAddr() {
+		v = unsafeReflectValue(v)
+	}
+	if v.CanAddr() {
+		v = v.Addr()
+	}
+
+	// Is it an error or Stringer?
+	switch iface := v.Interface().(type) {
+	case error:
+		defer catchPanic(w, v)
+		if cs.ContinueOnMethod {
+			w.Write(openParenBytes)
+			w.Write([]byte(iface.Error()))
+			w.Write(closeParenBytes)
+			w.Write(spaceBytes)
+			return false
+		}
+
+		w.Write([]byte(iface.Error()))
+		return true
+
+	case fmt.Stringer:
+		defer catchPanic(w, v)
+		if cs.ContinueOnMethod {
+			w.Write(openParenBytes)
+			w.Write([]byte(iface.String()))
+			w.Write(closeParenBytes)
+			w.Write(spaceBytes)
+			return false
+		}
+		w.Write([]byte(iface.String()))
+		return true
+	}
+	return false
+}
+
+// printBool outputs a boolean value as true or false to Writer w.
+func printBool(w io.Writer, val bool) {
+	if val {
+		w.Write(trueBytes)
+	} else {
+		w.Write(falseBytes)
+	}
+}
+
+// printInt outputs a signed integer value to Writer w.
+func printInt(w io.Writer, val int64, base int) {
+	w.Write([]byte(strconv.FormatInt(val, base)))
+}
+
+// printUint outputs an unsigned integer value to Writer w.
+func printUint(w io.Writer, val uint64, base int) {
+	w.Write([]byte(strconv.FormatUint(val, base)))
+}
+
+// printFloat outputs a floating point value using the specified precision,
+// which is expected to be 32 or 64bit, to Writer w.
+func printFloat(w io.Writer, val float64, precision int) {
+	w.Write([]byte(strconv.FormatFloat(val, 'g', -1, precision)))
+}
+
+// printComplex outputs a complex value using the specified float precision
+// for the real and imaginary parts to Writer w.
+func printComplex(w io.Writer, c complex128, floatPrecision int) {
+	r := real(c)
+	w.Write(openParenBytes)
+	w.Write([]byte(strconv.FormatFloat(r, 'g', -1, floatPrecision)))
+	i := imag(c)
+	if i >= 0 {
+		w.Write(plusBytes)
+	}
+	w.Write([]byte(strconv.FormatFloat(i, 'g', -1, floatPrecision)))
+	w.Write(iBytes)
+	w.Write(closeParenBytes)
+}
+
+// printHexPtr outputs a uintptr formatted as hexidecimal with a leading '0x'
+// prefix to Writer w.
+func printHexPtr(w io.Writer, p uintptr) {
+	// Null pointer.
+	num := uint64(p)
+	if num == 0 {
+		w.Write(nilAngleBytes)
+		return
+	}
+
+	// Max uint64 is 16 bytes in hex + 2 bytes for '0x' prefix
+	buf := make([]byte, 18)
+
+	// It's simpler to construct the hex string right to left.
+	base := uint64(16)
+	i := len(buf) - 1
+	for num >= base {
+		buf[i] = hexDigits[num%base]
+		num /= base
+		i--
+	}
+	buf[i] = hexDigits[num]
+
+	// Add '0x' prefix.
+	i--
+	buf[i] = 'x'
+	i--
+	buf[i] = '0'
+
+	// Strip unused leading bytes.
+	buf = buf[i:]
+	w.Write(buf)
+}
+
+// valuesSorter implements sort.Interface to allow a slice of reflect.Value
+// elements to be sorted.
+type valuesSorter struct {
+	values  []reflect.Value
+	strings []string // either nil or same len and values
+	cs      *ConfigState
+}
+
+// newValuesSorter initializes a valuesSorter instance, which holds a set of
+// surrogate keys on which the data should be sorted.  It uses flags in
+// ConfigState to decide if and how to populate those surrogate keys.
+func newValuesSorter(values []reflect.Value, cs *ConfigState) sort.Interface {
+	vs := &valuesSorter{values: values, cs: cs}
+	if canSortSimply(vs.values[0].Kind()) {
+		return vs
+	}
+	if !cs.DisableMethods {
+		vs.strings = make([]string, len(values))
+		for i := range vs.values {
+			b := bytes.Buffer{}
+			if !handleMethods(cs, &b, vs.values[i]) {
+				vs.strings = nil
+				break
+			}
+			vs.strings[i] = b.String()
+		}
+	}
+	if vs.strings == nil && cs.SpewKeys {
+		vs.strings = make([]string, len(values))
+		for i := range vs.values {
+			vs.strings[i] = Sprintf("%#v", vs.values[i].Interface())
+		}
+	}
+	return vs
+}
+
+// canSortSimply tests whether a reflect.Kind is a primitive that can be sorted
+// directly, or whether it should be considered for sorting by surrogate keys
+// (if the ConfigState allows it).
+func canSortSimply(kind reflect.Kind) bool {
+	// This switch parallels valueSortLess, except for the default case.
+	switch kind {
+	case reflect.Bool:
+		return true
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		return true
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		return true
+	case reflect.Float32, reflect.Float64:
+		return true
+	case reflect.String:
+		return true
+	case reflect.Uintptr:
+		return true
+	case reflect.Array:
+		return true
+	}
+	return false
+}
+
+// Len returns the number of values in the slice.  It is part of the
+// sort.Interface implementation.
+func (s *valuesSorter) Len() int {
+	return len(s.values)
+}
+
+// Swap swaps the values at the passed indices.  It is part of the
+// sort.Interface implementation.
+func (s *valuesSorter) Swap(i, j int) {
+	s.values[i], s.values[j] = s.values[j], s.values[i]
+	if s.strings != nil {
+		s.strings[i], s.strings[j] = s.strings[j], s.strings[i]
+	}
+}
+
+// valueSortLess returns whether the first value should sort before the second
+// value.  It is used by valueSorter.Less as part of the sort.Interface
+// implementation.
+func valueSortLess(a, b reflect.Value) bool {
+	switch a.Kind() {
+	case reflect.Bool:
+		return !a.Bool() && b.Bool()
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		return a.Int() < b.Int()
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		return a.Uint() < b.Uint()
+	case reflect.Float32, reflect.Float64:
+		return a.Float() < b.Float()
+	case reflect.String:
+		return a.String() < b.String()
+	case reflect.Uintptr:
+		return a.Uint() < b.Uint()
+	case reflect.Array:
+		// Compare the contents of both arrays.
+		l := a.Len()
+		for i := 0; i < l; i++ {
+			av := a.Index(i)
+			bv := b.Index(i)
+			if av.Interface() == bv.Interface() {
+				continue
+			}
+			return valueSortLess(av, bv)
+		}
+	}
+	return a.String() < b.String()
+}
+
+// Less returns whether the value at index i should sort before the
+// value at index j.  It is part of the sort.Interface implementation.
+func (s *valuesSorter) Less(i, j int) bool {
+	if s.strings == nil {
+		return valueSortLess(s.values[i], s.values[j])
+	}
+	return s.strings[i] < s.strings[j]
+}
+
+// sortValues is a sort function that handles both native types and any type that
+// can be converted to error or Stringer.  Other inputs are sorted according to
+// their Value.String() value to ensure display stability.
+func sortValues(values []reflect.Value, cs *ConfigState) {
+	if len(values) == 0 {
+		return
+	}
+	sort.Sort(newValuesSorter(values, cs))
+}

vendor/github.com/davecgh/go-spew/spew/common_test.go

@@ -0,0 +1,298 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew_test
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+
+	"github.com/davecgh/go-spew/spew"
+)
+
+// custom type to test Stinger interface on non-pointer receiver.
+type stringer string
+
+// String implements the Stringer interface for testing invocation of custom
+// stringers on types with non-pointer receivers.
+func (s stringer) String() string {
+	return "stringer " + string(s)
+}
+
+// custom type to test Stinger interface on pointer receiver.
+type pstringer string
+
+// String implements the Stringer interface for testing invocation of custom
+// stringers on types with only pointer receivers.
+func (s *pstringer) String() string {
+	return "stringer " + string(*s)
+}
+
+// xref1 and xref2 are cross referencing structs for testing circular reference
+// detection.
+type xref1 struct {
+	ps2 *xref2
+}
+type xref2 struct {
+	ps1 *xref1
+}
+
+// indirCir1, indirCir2, and indirCir3 are used to generate an indirect circular
+// reference for testing detection.
+type indirCir1 struct {
+	ps2 *indirCir2
+}
+type indirCir2 struct {
+	ps3 *indirCir3
+}
+type indirCir3 struct {
+	ps1 *indirCir1
+}
+
+// embed is used to test embedded structures.
+type embed struct {
+	a string
+}
+
+// embedwrap is used to test embedded structures.
+type embedwrap struct {
+	*embed
+	e *embed
+}
+
+// panicer is used to intentionally cause a panic for testing spew properly
+// handles them
+type panicer int
+
+func (p panicer) String() string {
+	panic("test panic")
+}
+
+// customError is used to test custom error interface invocation.
+type customError int
+
+func (e customError) Error() string {
+	return fmt.Sprintf("error: %d", int(e))
+}
+
+// stringizeWants converts a slice of wanted test output into a format suitable
+// for a test error message.
+func stringizeWants(wants []string) string {
+	s := ""
+	for i, want := range wants {
+		if i > 0 {
+			s += fmt.Sprintf("want%d: %s", i+1, want)
+		} else {
+			s += "want: " + want
+		}
+	}
+	return s
+}
+
+// testFailed returns whether or not a test failed by checking if the result
+// of the test is in the slice of wanted strings.
+func testFailed(result string, wants []string) bool {
+	for _, want := range wants {
+		if result == want {
+			return false
+		}
+	}
+	return true
+}
+
+type sortableStruct struct {
+	x int
+}
+
+func (ss sortableStruct) String() string {
+	return fmt.Sprintf("ss.%d", ss.x)
+}
+
+type unsortableStruct struct {
+	x int
+}
+
+type sortTestCase struct {
+	input    []reflect.Value
+	expected []reflect.Value
+}
+
+func helpTestSortValues(tests []sortTestCase, cs *spew.ConfigState, t *testing.T) {
+	getInterfaces := func(values []reflect.Value) []interface{} {
+		interfaces := []interface{}{}
+		for _, v := range values {
+			interfaces = append(interfaces, v.Interface())
+		}
+		return interfaces
+	}
+
+	for _, test := range tests {
+		spew.SortValues(test.input, cs)
+		// reflect.DeepEqual cannot really make sense of reflect.Value,
+		// probably because of all the pointer tricks. For instance,
+		// v(2.0) != v(2.0) on a 32-bits system. Turn them into interface{}
+		// instead.
+		input := getInterfaces(test.input)
+		expected := getInterfaces(test.expected)
+		if !reflect.DeepEqual(input, expected) {
+			t.Errorf("Sort mismatch:\n %v != %v", input, expected)
+		}
+	}
+}
+
+// TestSortValues ensures the sort functionality for relect.Value based sorting
+// works as intended.
+func TestSortValues(t *testing.T) {
+	v := reflect.ValueOf
+
+	a := v("a")
+	b := v("b")
+	c := v("c")
+	embedA := v(embed{"a"})
+	embedB := v(embed{"b"})
+	embedC := v(embed{"c"})
+	tests := []sortTestCase{
+		// No values.
+		{
+			[]reflect.Value{},
+			[]reflect.Value{},
+		},
+		// Bools.
+		{
+			[]reflect.Value{v(false), v(true), v(false)},
+			[]reflect.Value{v(false), v(false), v(true)},
+		},
+		// Ints.
+		{
+			[]reflect.Value{v(2), v(1), v(3)},
+			[]reflect.Value{v(1), v(2), v(3)},
+		},
+		// Uints.
+		{
+			[]reflect.Value{v(uint8(2)), v(uint8(1)), v(uint8(3))},
+			[]reflect.Value{v(uint8(1)), v(uint8(2)), v(uint8(3))},
+		},
+		// Floats.
+		{
+			[]reflect.Value{v(2.0), v(1.0), v(3.0)},
+			[]reflect.Value{v(1.0), v(2.0), v(3.0)},
+		},
+		// Strings.
+		{
+			[]reflect.Value{b, a, c},
+			[]reflect.Value{a, b, c},
+		},
+		// Array
+		{
+			[]reflect.Value{v([3]int{3, 2, 1}), v([3]int{1, 3, 2}), v([3]int{1, 2, 3})},
+			[]reflect.Value{v([3]int{1, 2, 3}), v([3]int{1, 3, 2}), v([3]int{3, 2, 1})},
+		},
+		// Uintptrs.
+		{
+			[]reflect.Value{v(uintptr(2)), v(uintptr(1)), v(uintptr(3))},
+			[]reflect.Value{v(uintptr(1)), v(uintptr(2)), v(uintptr(3))},
+		},
+		// SortableStructs.
+		{
+			// Note: not sorted - DisableMethods is set.
+			[]reflect.Value{v(sortableStruct{2}), v(sortableStruct{1}), v(sortableStruct{3})},
+			[]reflect.Value{v(sortableStruct{2}), v(sortableStruct{1}), v(sortableStruct{3})},
+		},
+		// UnsortableStructs.
+		{
+			// Note: not sorted - SpewKeys is false.
+			[]reflect.Value{v(unsortableStruct{2}), v(unsortableStruct{1}), v(unsortableStruct{3})},
+			[]reflect.Value{v(unsortableStruct{2}), v(unsortableStruct{1}), v(unsortableStruct{3})},
+		},
+		// Invalid.
+		{
+			[]reflect.Value{embedB, embedA, embedC},
+			[]reflect.Value{embedB, embedA, embedC},
+		},
+	}
+	cs := spew.ConfigState{DisableMethods: true, SpewKeys: false}
+	helpTestSortValues(tests, &cs, t)
+}
+
+// TestSortValuesWithMethods ensures the sort functionality for relect.Value
+// based sorting works as intended when using string methods.
+func TestSortValuesWithMethods(t *testing.T) {
+	v := reflect.ValueOf
+
+	a := v("a")
+	b := v("b")
+	c := v("c")
+	tests := []sortTestCase{
+		// Ints.
+		{
+			[]reflect.Value{v(2), v(1), v(3)},
+			[]reflect.Value{v(1), v(2), v(3)},
+		},
+		// Strings.
+		{
+			[]reflect.Value{b, a, c},
+			[]reflect.Value{a, b, c},
+		},
+		// SortableStructs.
+		{
+			[]reflect.Value{v(sortableStruct{2}), v(sortableStruct{1}), v(sortableStruct{3})},
+			[]reflect.Value{v(sortableStruct{1}), v(sortableStruct{2}), v(sortableStruct{3})},
+		},
+		// UnsortableStructs.
+		{
+			// Note: not sorted - SpewKeys is false.
+			[]reflect.Value{v(unsortableStruct{2}), v(unsortableStruct{1}), v(unsortableStruct{3})},
+			[]reflect.Value{v(unsortableStruct{2}), v(unsortableStruct{1}), v(unsortableStruct{3})},
+		},
+	}
+	cs := spew.ConfigState{DisableMethods: false, SpewKeys: false}
+	helpTestSortValues(tests, &cs, t)
+}
+
+// TestSortValuesWithSpew ensures the sort functionality for relect.Value
+// based sorting works as intended when using spew to stringify keys.
+func TestSortValuesWithSpew(t *testing.T) {
+	v := reflect.ValueOf
+
+	a := v("a")
+	b := v("b")
+	c := v("c")
+	tests := []sortTestCase{
+		// Ints.
+		{
+			[]reflect.Value{v(2), v(1), v(3)},
+			[]reflect.Value{v(1), v(2), v(3)},
+		},
+		// Strings.
+		{
+			[]reflect.Value{b, a, c},
+			[]reflect.Value{a, b, c},
+		},
+		// SortableStructs.
+		{
+			[]reflect.Value{v(sortableStruct{2}), v(sortableStruct{1}), v(sortableStruct{3})},
+			[]reflect.Value{v(sortableStruct{1}), v(sortableStruct{2}), v(sortableStruct{3})},
+		},
+		// UnsortableStructs.
+		{
+			[]reflect.Value{v(unsortableStruct{2}), v(unsortableStruct{1}), v(unsortableStruct{3})},
+			[]reflect.Value{v(unsortableStruct{1}), v(unsortableStruct{2}), v(unsortableStruct{3})},
+		},
+	}
+	cs := spew.ConfigState{DisableMethods: true, SpewKeys: true}
+	helpTestSortValues(tests, &cs, t)
+}

vendor/github.com/davecgh/go-spew/spew/config.go

@@ -0,0 +1,306 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"os"
+)
+
+// ConfigState houses the configuration options used by spew to format and
+// display values.  There is a global instance, Config, that is used to control
+// all top-level Formatter and Dump functionality.  Each ConfigState instance
+// provides methods equivalent to the top-level functions.
+//
+// The zero value for ConfigState provides no indentation.  You would typically
+// want to set it to a space or a tab.
+//
+// Alternatively, you can use NewDefaultConfig to get a ConfigState instance
+// with default settings.  See the documentation of NewDefaultConfig for default
+// values.
+type ConfigState struct {
+	// Indent specifies the string to use for each indentation level.  The
+	// global config instance that all top-level functions use set this to a
+	// single space by default.  If you would like more indentation, you might
+	// set this to a tab with "\t" or perhaps two spaces with "  ".
+	Indent string
+
+	// MaxDepth controls the maximum number of levels to descend into nested
+	// data structures.  The default, 0, means there is no limit.
+	//
+	// NOTE: Circular data structures are properly detected, so it is not
+	// necessary to set this value unless you specifically want to limit deeply
+	// nested data structures.
+	MaxDepth int
+
+	// DisableMethods specifies whether or not error and Stringer interfaces are
+	// invoked for types that implement them.
+	DisableMethods bool
+
+	// DisablePointerMethods specifies whether or not to check for and invoke
+	// error and Stringer interfaces on types which only accept a pointer
+	// receiver when the current type is not a pointer.
+	//
+	// NOTE: This might be an unsafe action since calling one of these methods
+	// with a pointer receiver could technically mutate the value, however,
+	// in practice, types which choose to satisify an error or Stringer
+	// interface with a pointer receiver should not be mutating their state
+	// inside these interface methods.  As a result, this option relies on
+	// access to the unsafe package, so it will not have any effect when
+	// running in environments without access to the unsafe package such as
+	// Google App Engine or with the "safe" build tag specified.
+	DisablePointerMethods bool
+
+	// DisablePointerAddresses specifies whether to disable the printing of
+	// pointer addresses. This is useful when diffing data structures in tests.
+	DisablePointerAddresses bool
+
+	// DisableCapacities specifies whether to disable the printing of capacities
+	// for arrays, slices, maps and channels. This is useful when diffing
+	// data structures in tests.
+	DisableCapacities bool
+
+	// ContinueOnMethod specifies whether or not recursion should continue once
+	// a custom error or Stringer interface is invoked.  The default, false,
+	// means it will print the results of invoking the custom error or Stringer
+	// interface and return immediately instead of continuing to recurse into
+	// the internals of the data type.
+	//
+	// NOTE: This flag does not have any effect if method invocation is disabled
+	// via the DisableMethods or DisablePointerMethods options.
+	ContinueOnMethod bool
+
+	// SortKeys specifies map keys should be sorted before being printed. Use
+	// this to have a more deterministic, diffable output.  Note that only
+	// native types (bool, int, uint, floats, uintptr and string) and types
+	// that support the error or Stringer interfaces (if methods are
+	// enabled) are supported, with other types sorted according to the
+	// reflect.Value.String() output which guarantees display stability.
+	SortKeys bool
+
+	// SpewKeys specifies that, as a last resort attempt, map keys should
+	// be spewed to strings and sorted by those strings.  This is only
+	// considered if SortKeys is true.
+	SpewKeys bool
+}
+
+// Config is the active configuration of the top-level functions.
+// The configuration can be changed by modifying the contents of spew.Config.
+var Config = ConfigState{Indent: " "}
+
+// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the formatted string as a value that satisfies error.  See NewFormatter
+// for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Errorf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Errorf(format string, a ...interface{}) (err error) {
+	return fmt.Errorf(format, c.convertArgs(a)...)
+}
+
+// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprint(w, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprint(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprint(w, c.convertArgs(a)...)
+}
+
+// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintf(w, format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
+	return fmt.Fprintf(w, format, c.convertArgs(a)...)
+}
+
+// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
+// passed with a Formatter interface returned by c.NewFormatter.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintln(w, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprintln(w, c.convertArgs(a)...)
+}
+
+// Print is a wrapper for fmt.Print that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Print(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Print(a ...interface{}) (n int, err error) {
+	return fmt.Print(c.convertArgs(a)...)
+}
+
+// Printf is a wrapper for fmt.Printf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Printf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Printf(format string, a ...interface{}) (n int, err error) {
+	return fmt.Printf(format, c.convertArgs(a)...)
+}
+
+// Println is a wrapper for fmt.Println that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Println(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Println(a ...interface{}) (n int, err error) {
+	return fmt.Println(c.convertArgs(a)...)
+}
+
+// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprint(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprint(a ...interface{}) string {
+	return fmt.Sprint(c.convertArgs(a)...)
+}
+
+// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprintf(format string, a ...interface{}) string {
+	return fmt.Sprintf(format, c.convertArgs(a)...)
+}
+
+// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
+// were passed with a Formatter interface returned by c.NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintln(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprintln(a ...interface{}) string {
+	return fmt.Sprintln(c.convertArgs(a)...)
+}
+
+/*
+NewFormatter returns a custom formatter that satisfies the fmt.Formatter
+interface.  As a result, it integrates cleanly with standard fmt package
+printing functions.  The formatter is useful for inline printing of smaller data
+types similar to the standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), and %#+v (adds types and pointer addresses) verb
+combinations.  Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting.  In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Typically this function shouldn't be called directly.  It is much easier to make
+use of the custom formatter by calling one of the convenience functions such as
+c.Printf, c.Println, or c.Printf.
+*/
+func (c *ConfigState) NewFormatter(v interface{}) fmt.Formatter {
+	return newFormatter(c, v)
+}
+
+// Fdump formats and displays the passed arguments to io.Writer w.  It formats
+// exactly the same as Dump.
+func (c *ConfigState) Fdump(w io.Writer, a ...interface{}) {
+	fdump(c, w, a...)
+}
+
+/*
+Dump displays the passed parameters to standard out with newlines, customizable
+indentation, and additional debug information such as complete types and all
+pointer addresses used to indirect to the final value.  It provides the
+following features over the built-in printing facilities provided by the fmt
+package:
+
+	* Pointers are dereferenced and followed
+	* Circular data structures are detected and handled properly
+	* Custom Stringer/error interfaces are optionally invoked, including
+	  on unexported types
+	* Custom types which only implement the Stringer/error interfaces via
+	  a pointer receiver are optionally invoked when passing non-pointer
+	  variables
+	* Byte arrays and slices are dumped like the hexdump -C command which
+	  includes offsets, byte values in hex, and ASCII output
+
+The configuration options are controlled by modifying the public members
+of c.  See ConfigState for options documentation.
+
+See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
+get the formatted result as a string.
+*/
+func (c *ConfigState) Dump(a ...interface{}) {
+	fdump(c, os.Stdout, a...)
+}
+
+// Sdump returns a string with the passed arguments formatted exactly the same
+// as Dump.
+func (c *ConfigState) Sdump(a ...interface{}) string {
+	var buf bytes.Buffer
+	fdump(c, &buf, a...)
+	return buf.String()
+}
+
+// convertArgs accepts a slice of arguments and returns a slice of the same
+// length with each argument converted to a spew Formatter interface using
+// the ConfigState associated with s.
+func (c *ConfigState) convertArgs(args []interface{}) (formatters []interface{}) {
+	formatters = make([]interface{}, len(args))
+	for index, arg := range args {
+		formatters[index] = newFormatter(c, arg)
+	}
+	return formatters
+}
+
+// NewDefaultConfig returns a ConfigState with the following default settings.
+//
+// 	Indent: " "
+// 	MaxDepth: 0
+// 	DisableMethods: false
+// 	DisablePointerMethods: false
+// 	ContinueOnMethod: false
+// 	SortKeys: false
+func NewDefaultConfig() *ConfigState {
+	return &ConfigState{Indent: " "}
+}

vendor/github.com/davecgh/go-spew/spew/doc.go

@@ -0,0 +1,211 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+Package spew implements a deep pretty printer for Go data structures to aid in
+debugging.
+
+A quick overview of the additional features spew provides over the built-in
+printing facilities for Go data types are as follows:
+
+	* Pointers are dereferenced and followed
+	* Circular data structures are detected and handled properly
+	* Custom Stringer/error interfaces are optionally invoked, including
+	  on unexported types
+	* Custom types which only implement the Stringer/error interfaces via
+	  a pointer receiver are optionally invoked when passing non-pointer
+	  variables
+	* Byte arrays and slices are dumped like the hexdump -C command which
+	  includes offsets, byte values in hex, and ASCII output (only when using
+	  Dump style)
+
+There are two different approaches spew allows for dumping Go data structures:
+
+	* Dump style which prints with newlines, customizable indentation,
+	  and additional debug information such as types and all pointer addresses
+	  used to indirect to the final value
+	* A custom Formatter interface that integrates cleanly with the standard fmt
+	  package and replaces %v, %+v, %#v, and %#+v to provide inline printing
+	  similar to the default %v while providing the additional functionality
+	  outlined above and passing unsupported format verbs such as %x and %q
+	  along to fmt
+
+Quick Start
+
+This section demonstrates how to quickly get started with spew.  See the
+sections below for further details on formatting and configuration options.
+
+To dump a variable with full newlines, indentation, type, and pointer
+information use Dump, Fdump, or Sdump:
+	spew.Dump(myVar1, myVar2, ...)
+	spew.Fdump(someWriter, myVar1, myVar2, ...)
+	str := spew.Sdump(myVar1, myVar2, ...)
+
+Alternatively, if you would prefer to use format strings with a compacted inline
+printing style, use the convenience wrappers Printf, Fprintf, etc with
+%v (most compact), %+v (adds pointer addresses), %#v (adds types), or
+%#+v (adds types and pointer addresses):
+	spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+	spew.Fprintf(someWriter, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Fprintf(someWriter, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+
+Configuration Options
+
+Configuration of spew is handled by fields in the ConfigState type.  For
+convenience, all of the top-level functions use a global state available
+via the spew.Config global.
+
+It is also possible to create a ConfigState instance that provides methods
+equivalent to the top-level functions.  This allows concurrent configuration
+options.  See the ConfigState documentation for more details.
+
+The following configuration options are available:
+	* Indent
+		String to use for each indentation level for Dump functions.
+		It is a single space by default.  A popular alternative is "\t".
+
+	* MaxDepth
+		Maximum number of levels to descend into nested data structures.
+		There is no limit by default.
+
+	* DisableMethods
+		Disables invocation of error and Stringer interface methods.
+		Method invocation is enabled by default.
+
+	* DisablePointerMethods
+		Disables invocation of error and Stringer interface methods on types
+		which only accept pointer receivers from non-pointer variables.
+		Pointer method invocation is enabled by default.
+
+	* DisablePointerAddresses
+		DisablePointerAddresses specifies whether to disable the printing of
+		pointer addresses. This is useful when diffing data structures in tests.
+
+	* DisableCapacities
+		DisableCapacities specifies whether to disable the printing of
+		capacities for arrays, slices, maps and channels. This is useful when
+		diffing data structures in tests.
+
+	* ContinueOnMethod
+		Enables recursion into types after invoking error and Stringer interface
+		methods. Recursion after method invocation is disabled by default.
+
+	* SortKeys
+		Specifies map keys should be sorted before being printed. Use
+		this to have a more deterministic, diffable output.  Note that
+		only native types (bool, int, uint, floats, uintptr and string)
+		and types which implement error or Stringer interfaces are
+		supported with other types sorted according to the
+		reflect.Value.String() output which guarantees display
+		stability.  Natural map order is used by default.
+
+	* SpewKeys
+		Specifies that, as a last resort attempt, map keys should be
+		spewed to strings and sorted by those strings.  This is only
+		considered if SortKeys is true.
+
+Dump Usage
+
+Simply call spew.Dump with a list of variables you want to dump:
+
+	spew.Dump(myVar1, myVar2, ...)
+
+You may also call spew.Fdump if you would prefer to output to an arbitrary
+io.Writer.  For example, to dump to standard error:
+
+	spew.Fdump(os.Stderr, myVar1, myVar2, ...)
+
+A third option is to call spew.Sdump to get the formatted output as a string:
+
+	str := spew.Sdump(myVar1, myVar2, ...)
+
+Sample Dump Output
+
+See the Dump example for details on the setup of the types and variables being
+shown here.
+
+	(main.Foo) {
+	 unexportedField: (*main.Bar)(0xf84002e210)({
+	  flag: (main.Flag) flagTwo,
+	  data: (uintptr) <nil>
+	 }),
+	 ExportedField: (map[interface {}]interface {}) (len=1) {
+	  (string) (len=3) "one": (bool) true
+	 }
+	}
+
+Byte (and uint8) arrays and slices are displayed uniquely like the hexdump -C
+command as shown.
+	([]uint8) (len=32 cap=32) {
+	 00000000  11 12 13 14 15 16 17 18  19 1a 1b 1c 1d 1e 1f 20  |............... |
+	 00000010  21 22 23 24 25 26 27 28  29 2a 2b 2c 2d 2e 2f 30  |!"#$%&'()*+,-./0|
+	 00000020  31 32                                             |12|
+	}
+
+Custom Formatter
+
+Spew provides a custom formatter that implements the fmt.Formatter interface
+so that it integrates cleanly with standard fmt package printing functions. The
+formatter is useful for inline printing of smaller data types similar to the
+standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
+combinations.  Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting.  In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Custom Formatter Usage
+
+The simplest way to make use of the spew custom formatter is to call one of the
+convenience functions such as spew.Printf, spew.Println, or spew.Printf.  The
+functions have syntax you are most likely already familiar with:
+
+	spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+	spew.Println(myVar, myVar2)
+	spew.Fprintf(os.Stderr, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Fprintf(os.Stderr, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+
+See the Index for the full list convenience functions.
+
+Sample Formatter Output
+
+Double pointer to a uint8:
+	  %v: <**>5
+	 %+v: <**>(0xf8400420d0->0xf8400420c8)5
+	 %#v: (**uint8)5
+	%#+v: (**uint8)(0xf8400420d0->0xf8400420c8)5
+
+Pointer to circular struct with a uint8 field and a pointer to itself:
+	  %v: <*>{1 <*><shown>}
+	 %+v: <*>(0xf84003e260){ui8:1 c:<*>(0xf84003e260)<shown>}
+	 %#v: (*main.circular){ui8:(uint8)1 c:(*main.circular)<shown>}
+	%#+v: (*main.circular)(0xf84003e260){ui8:(uint8)1 c:(*main.circular)(0xf84003e260)<shown>}
+
+See the Printf example for details on the setup of variables being shown
+here.
+
+Errors
+
+Since it is possible for custom Stringer/error interfaces to panic, spew
+detects them and handles them internally by printing the panic information
+inline with the output.  Since spew is intended to provide deep pretty printing
+capabilities on structures, it intentionally does not return any errors.
+*/
+package spew

vendor/github.com/davecgh/go-spew/spew/dump.go

@@ -0,0 +1,509 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"os"
+	"reflect"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+var (
+	// uint8Type is a reflect.Type representing a uint8.  It is used to
+	// convert cgo types to uint8 slices for hexdumping.
+	uint8Type = reflect.TypeOf(uint8(0))
+
+	// cCharRE is a regular expression that matches a cgo char.
+	// It is used to detect character arrays to hexdump them.
+	cCharRE = regexp.MustCompile("^.*\\._Ctype_char$")
+
+	// cUnsignedCharRE is a regular expression that matches a cgo unsigned
+	// char.  It is used to detect unsigned character arrays to hexdump
+	// them.
+	cUnsignedCharRE = regexp.MustCompile("^.*\\._Ctype_unsignedchar$")
+
+	// cUint8tCharRE is a regular expression that matches a cgo uint8_t.
+	// It is used to detect uint8_t arrays to hexdump them.
+	cUint8tCharRE = regexp.MustCompile("^.*\\._Ctype_uint8_t$")
+)
+
+// dumpState contains information about the state of a dump operation.
+type dumpState struct {
+	w                io.Writer
+	depth            int
+	pointers         map[uintptr]int
+	ignoreNextType   bool
+	ignoreNextIndent bool
+	cs               *ConfigState
+}
+
+// indent performs indentation according to the depth level and cs.Indent
+// option.
+func (d *dumpState) indent() {
+	if d.ignoreNextIndent {
+		d.ignoreNextIndent = false
+		return
+	}
+	d.w.Write(bytes.Repeat([]byte(d.cs.Indent), d.depth))
+}
+
+// unpackValue returns values inside of non-nil interfaces when possible.
+// This is useful for data types like structs, arrays, slices, and maps which
+// can contain varying types packed inside an interface.
+func (d *dumpState) unpackValue(v reflect.Value) reflect.Value {
+	if v.Kind() == reflect.Interface && !v.IsNil() {
+		v = v.Elem()
+	}
+	return v
+}
+
+// dumpPtr handles formatting of pointers by indirecting them as necessary.
+func (d *dumpState) dumpPtr(v reflect.Value) {
+	// Remove pointers at or below the current depth from map used to detect
+	// circular refs.
+	for k, depth := range d.pointers {
+		if depth >= d.depth {
+			delete(d.pointers, k)
+		}
+	}
+
+	// Keep list of all dereferenced pointers to show later.
+	pointerChain := make([]uintptr, 0)
+
+	// Figure out how many levels of indirection there are by dereferencing
+	// pointers and unpacking interfaces down the chain while detecting circular
+	// references.
+	nilFound := false
+	cycleFound := false
+	indirects := 0
+	ve := v
+	for ve.Kind() == reflect.Ptr {
+		if ve.IsNil() {
+			nilFound = true
+			break
+		}
+		indirects++
+		addr := ve.Pointer()
+		pointerChain = append(pointerChain, addr)
+		if pd, ok := d.pointers[addr]; ok && pd < d.depth {
+			cycleFound = true
+			indirects--
+			break
+		}
+		d.pointers[addr] = d.depth
+
+		ve = ve.Elem()
+		if ve.Kind() == reflect.Interface {
+			if ve.IsNil() {
+				nilFound = true
+				break
+			}
+			ve = ve.Elem()
+		}
+	}
+
+	// Display type information.
+	d.w.Write(openParenBytes)
+	d.w.Write(bytes.Repeat(asteriskBytes, indirects))
+	d.w.Write([]byte(ve.Type().String()))
+	d.w.Write(closeParenBytes)
+
+	// Display pointer information.
+	if !d.cs.DisablePointerAddresses && len(pointerChain) > 0 {
+		d.w.Write(openParenBytes)
+		for i, addr := range pointerChain {
+			if i > 0 {
+				d.w.Write(pointerChainBytes)
+			}
+			printHexPtr(d.w, addr)
+		}
+		d.w.Write(closeParenBytes)
+	}
+
+	// Display dereferenced value.
+	d.w.Write(openParenBytes)
+	switch {
+	case nilFound == true:
+		d.w.Write(nilAngleBytes)
+
+	case cycleFound == true:
+		d.w.Write(circularBytes)
+
+	default:
+		d.ignoreNextType = true
+		d.dump(ve)
+	}
+	d.w.Write(closeParenBytes)
+}
+
+// dumpSlice handles formatting of arrays and slices.  Byte (uint8 under
+// reflection) arrays and slices are dumped in hexdump -C fashion.
+func (d *dumpState) dumpSlice(v reflect.Value) {
+	// Determine whether this type should be hex dumped or not.  Also,
+	// for types which should be hexdumped, try to use the underlying data
+	// first, then fall back to trying to convert them to a uint8 slice.
+	var buf []uint8
+	doConvert := false
+	doHexDump := false
+	numEntries := v.Len()
+	if numEntries > 0 {
+		vt := v.Index(0).Type()
+		vts := vt.String()
+		switch {
+		// C types that need to be converted.
+		case cCharRE.MatchString(vts):
+			fallthrough
+		case cUnsignedCharRE.MatchString(vts):
+			fallthrough
+		case cUint8tCharRE.MatchString(vts):
+			doConvert = true
+
+		// Try to use existing uint8 slices and fall back to converting
+		// and copying if that fails.
+		case vt.Kind() == reflect.Uint8:
+			// We need an addressable interface to convert the type
+			// to a byte slice.  However, the reflect package won't
+			// give us an interface on certain things like
+			// unexported struct fields in order to enforce
+			// visibility rules.  We use unsafe, when available, to
+			// bypass these restrictions since this package does not
+			// mutate the values.
+			vs := v
+			if !vs.CanInterface() || !vs.CanAddr() {
+				vs = unsafeReflectValue(vs)
+			}
+			if !UnsafeDisabled {
+				vs = vs.Slice(0, numEntries)
+
+				// Use the existing uint8 slice if it can be
+				// type asserted.
+				iface := vs.Interface()
+				if slice, ok := iface.([]uint8); ok {
+					buf = slice
+					doHexDump = true
+					break
+				}
+			}
+
+			// The underlying data needs to be converted if it can't
+			// be type asserted to a uint8 slice.
+			doConvert = true
+		}
+
+		// Copy and convert the underlying type if needed.
+		if doConvert && vt.ConvertibleTo(uint8Type) {
+			// Convert and copy each element into a uint8 byte
+			// slice.
+			buf = make([]uint8, numEntries)
+			for i := 0; i < numEntries; i++ {
+				vv := v.Index(i)
+				buf[i] = uint8(vv.Convert(uint8Type).Uint())
+			}
+			doHexDump = true
+		}
+	}
+
+	// Hexdump the entire slice as needed.
+	if doHexDump {
+		indent := strings.Repeat(d.cs.Indent, d.depth)
+		str := indent + hex.Dump(buf)
+		str = strings.Replace(str, "\n", "\n"+indent, -1)
+		str = strings.TrimRight(str, d.cs.Indent)
+		d.w.Write([]byte(str))
+		return
+	}
+
+	// Recursively call dump for each item.
+	for i := 0; i < numEntries; i++ {
+		d.dump(d.unpackValue(v.Index(i)))
+		if i < (numEntries - 1) {
+			d.w.Write(commaNewlineBytes)
+		} else {
+			d.w.Write(newlineBytes)
+		}
+	}
+}
+
+// dump is the main workhorse for dumping a value.  It uses the passed reflect
+// value to figure out what kind of object we are dealing with and formats it
+// appropriately.  It is a recursive function, however circular data structures
+// are detected and handled properly.
+func (d *dumpState) dump(v reflect.Value) {
+	// Handle invalid reflect values immediately.
+	kind := v.Kind()
+	if kind == reflect.Invalid {
+		d.w.Write(invalidAngleBytes)
+		return
+	}
+
+	// Handle pointers specially.
+	if kind == reflect.Ptr {
+		d.indent()
+		d.dumpPtr(v)
+		return
+	}
+
+	// Print type information unless already handled elsewhere.
+	if !d.ignoreNextType {
+		d.indent()
+		d.w.Write(openParenBytes)
+		d.w.Write([]byte(v.Type().String()))
+		d.w.Write(closeParenBytes)
+		d.w.Write(spaceBytes)
+	}
+	d.ignoreNextType = false
+
+	// Display length and capacity if the built-in len and cap functions
+	// work with the value's kind and the len/cap itself is non-zero.
+	valueLen, valueCap := 0, 0
+	switch v.Kind() {
+	case reflect.Array, reflect.Slice, reflect.Chan:
+		valueLen, valueCap = v.Len(), v.Cap()
+	case reflect.Map, reflect.String:
+		valueLen = v.Len()
+	}
+	if valueLen != 0 || !d.cs.DisableCapacities && valueCap != 0 {
+		d.w.Write(openParenBytes)
+		if valueLen != 0 {
+			d.w.Write(lenEqualsBytes)
+			printInt(d.w, int64(valueLen), 10)
+		}
+		if !d.cs.DisableCapacities && valueCap != 0 {
+			if valueLen != 0 {
+				d.w.Write(spaceBytes)
+			}
+			d.w.Write(capEqualsBytes)
+			printInt(d.w, int64(valueCap), 10)
+		}
+		d.w.Write(closeParenBytes)
+		d.w.Write(spaceBytes)
+	}
+
+	// Call Stringer/error interfaces if they exist and the handle methods flag
+	// is enabled
+	if !d.cs.DisableMethods {
+		if (kind != reflect.Invalid) && (kind != reflect.Interface) {
+			if handled := handleMethods(d.cs, d.w, v); handled {
+				return
+			}
+		}
+	}
+
+	switch kind {
+	case reflect.Invalid:
+		// Do nothing.  We should never get here since invalid has already
+		// been handled above.
+
+	case reflect.Bool:
+		printBool(d.w, v.Bool())
+
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		printInt(d.w, v.Int(), 10)
+
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		printUint(d.w, v.Uint(), 10)
+
+	case reflect.Float32:
+		printFloat(d.w, v.Float(), 32)
+
+	case reflect.Float64:
+		printFloat(d.w, v.Float(), 64)
+
+	case reflect.Complex64:
+		printComplex(d.w, v.Complex(), 32)
+
+	case reflect.Complex128:
+		printComplex(d.w, v.Complex(), 64)
+
+	case reflect.Slice:
+		if v.IsNil() {
+			d.w.Write(nilAngleBytes)
+			break
+		}
+		fallthrough
+
+	case reflect.Array:
+		d.w.Write(openBraceNewlineBytes)
+		d.depth++
+		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+			d.indent()
+			d.w.Write(maxNewlineBytes)
+		} else {
+			d.dumpSlice(v)
+		}
+		d.depth--
+		d.indent()
+		d.w.Write(closeBraceBytes)
+
+	case reflect.String:
+		d.w.Write([]byte(strconv.Quote(v.String())))
+
+	case reflect.Interface:
+		// The only time we should get here is for nil interfaces due to
+		// unpackValue calls.
+		if v.IsNil() {
+			d.w.Write(nilAngleBytes)
+		}
+
+	case reflect.Ptr:
+		// Do nothing.  We should never get here since pointers have already
+		// been handled above.
+
+	case reflect.Map:
+		// nil maps should be indicated as different than empty maps
+		if v.IsNil() {
+			d.w.Write(nilAngleBytes)
+			break
+		}
+
+		d.w.Write(openBraceNewlineBytes)
+		d.depth++
+		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+			d.indent()
+			d.w.Write(maxNewlineBytes)
+		} else {
+			numEntries := v.Len()
+			keys := v.MapKeys()
+			if d.cs.SortKeys {
+				sortValues(keys, d.cs)
+			}
+			for i, key := range keys {
+				d.dump(d.unpackValue(key))
+				d.w.Write(colonSpaceBytes)
+				d.ignoreNextIndent = true
+				d.dump(d.unpackValue(v.MapIndex(key)))
+				if i < (numEntries - 1) {
+					d.w.Write(commaNewlineBytes)
+				} else {
+					d.w.Write(newlineBytes)
+				}
+			}
+		}
+		d.depth--
+		d.indent()
+		d.w.Write(closeBraceBytes)
+
+	case reflect.Struct:
+		d.w.Write(openBraceNewlineBytes)
+		d.depth++
+		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+			d.indent()
+			d.w.Write(maxNewlineBytes)
+		} else {
+			vt := v.Type()
+			numFields := v.NumField()
+			for i := 0; i < numFields; i++ {
+				d.indent()
+				vtf := vt.Field(i)
+				d.w.Write([]byte(vtf.Name))
+				d.w.Write(colonSpaceBytes)
+				d.ignoreNextIndent = true
+				d.dump(d.unpackValue(v.Field(i)))
+				if i < (numFields - 1) {
+					d.w.Write(commaNewlineBytes)
+				} else {
+					d.w.Write(newlineBytes)
+				}
+			}
+		}
+		d.depth--
+		d.indent()
+		d.w.Write(closeBraceBytes)
+
+	case reflect.Uintptr:
+		printHexPtr(d.w, uintptr(v.Uint()))
+
+	case reflect.UnsafePointer, reflect.Chan, reflect.Func:
+		printHexPtr(d.w, v.Pointer())
+
+	// There were not any other types at the time this code was written, but
+	// fall back to letting the default fmt package handle it in case any new
+	// types are added.
+	default:
+		if v.CanInterface() {
+			fmt.Fprintf(d.w, "%v", v.Interface())
+		} else {
+			fmt.Fprintf(d.w, "%v", v.String())
+		}
+	}
+}
+
+// fdump is a helper function to consolidate the logic from the various public
+// methods which take varying writers and config states.
+func fdump(cs *ConfigState, w io.Writer, a ...interface{}) {
+	for _, arg := range a {
+		if arg == nil {
+			w.Write(interfaceBytes)
+			w.Write(spaceBytes)
+			w.Write(nilAngleBytes)
+			w.Write(newlineBytes)
+			continue
+		}
+
+		d := dumpState{w: w, cs: cs}
+		d.pointers = make(map[uintptr]int)
+		d.dump(reflect.ValueOf(arg))
+		d.w.Write(newlineBytes)
+	}
+}
+
+// Fdump formats and displays the passed arguments to io.Writer w.  It formats
+// exactly the same as Dump.
+func Fdump(w io.Writer, a ...interface{}) {
+	fdump(&Config, w, a...)
+}
+
+// Sdump returns a string with the passed arguments formatted exactly the same
+// as Dump.
+func Sdump(a ...interface{}) string {
+	var buf bytes.Buffer
+	fdump(&Config, &buf, a...)
+	return buf.String()
+}
+
+/*
+Dump displays the passed parameters to standard out with newlines, customizable
+indentation, and additional debug information such as complete types and all
+pointer addresses used to indirect to the final value.  It provides the
+following features over the built-in printing facilities provided by the fmt
+package:
+
+	* Pointers are dereferenced and followed
+	* Circular data structures are detected and handled properly
+	* Custom Stringer/error interfaces are optionally invoked, including
+	  on unexported types
+	* Custom types which only implement the Stringer/error interfaces via
+	  a pointer receiver are optionally invoked when passing non-pointer
+	  variables
+	* Byte arrays and slices are dumped like the hexdump -C command which
+	  includes offsets, byte values in hex, and ASCII output
+
+The configuration options are controlled by an exported package global,
+spew.Config.  See ConfigState for options documentation.
+
+See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
+get the formatted result as a string.
+*/
+func Dump(a ...interface{}) {
+	fdump(&Config, os.Stdout, a...)
+}

vendor/github.com/davecgh/go-spew/spew/dumpcgo_test.go

@@ -0,0 +1,99 @@
+// Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+// NOTE: Due to the following build constraints, this file will only be compiled
+// when both cgo is supported and "-tags testcgo" is added to the go test
+// command line.  This means the cgo tests are only added (and hence run) when
+// specifially requested.  This configuration is used because spew itself
+// does not require cgo to run even though it does handle certain cgo types
+// specially.  Rather than forcing all clients to require cgo and an external
+// C compiler just to run the tests, this scheme makes them optional.
+// +build cgo,testcgo
+
+package spew_test
+
+import (
+	"fmt"
+
+	"github.com/davecgh/go-spew/spew/testdata"
+)
+
+func addCgoDumpTests() {
+	// C char pointer.
+	v := testdata.GetCgoCharPointer()
+	nv := testdata.GetCgoNullCharPointer()
+	pv := &v
+	vcAddr := fmt.Sprintf("%p", v)
+	vAddr := fmt.Sprintf("%p", pv)
+	pvAddr := fmt.Sprintf("%p", &pv)
+	vt := "*testdata._Ctype_char"
+	vs := "116"
+	addDumpTest(v, "("+vt+")("+vcAddr+")("+vs+")\n")
+	addDumpTest(pv, "(*"+vt+")("+vAddr+"->"+vcAddr+")("+vs+")\n")
+	addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+"->"+vcAddr+")("+vs+")\n")
+	addDumpTest(nv, "("+vt+")(<nil>)\n")
+
+	// C char array.
+	v2, v2l, v2c := testdata.GetCgoCharArray()
+	v2Len := fmt.Sprintf("%d", v2l)
+	v2Cap := fmt.Sprintf("%d", v2c)
+	v2t := "[6]testdata._Ctype_char"
+	v2s := "(len=" + v2Len + " cap=" + v2Cap + ") " +
+		"{\n 00000000  74 65 73 74 32 00                               " +
+		"  |test2.|\n}"
+	addDumpTest(v2, "("+v2t+") "+v2s+"\n")
+
+	// C unsigned char array.
+	v3, v3l, v3c := testdata.GetCgoUnsignedCharArray()
+	v3Len := fmt.Sprintf("%d", v3l)
+	v3Cap := fmt.Sprintf("%d", v3c)
+	v3t := "[6]testdata._Ctype_unsignedchar"
+	v3t2 := "[6]testdata._Ctype_uchar"
+	v3s := "(len=" + v3Len + " cap=" + v3Cap + ") " +
+		"{\n 00000000  74 65 73 74 33 00                               " +
+		"  |test3.|\n}"
+	addDumpTest(v3, "("+v3t+") "+v3s+"\n", "("+v3t2+") "+v3s+"\n")
+
+	// C signed char array.
+	v4, v4l, v4c := testdata.GetCgoSignedCharArray()
+	v4Len := fmt.Sprintf("%d", v4l)
+	v4Cap := fmt.Sprintf("%d", v4c)
+	v4t := "[6]testdata._Ctype_schar"
+	v4t2 := "testdata._Ctype_schar"
+	v4s := "(len=" + v4Len + " cap=" + v4Cap + ") " +
+		"{\n (" + v4t2 + ") 116,\n (" + v4t2 + ") 101,\n (" + v4t2 +
+		") 115,\n (" + v4t2 + ") 116,\n (" + v4t2 + ") 52,\n (" + v4t2 +
+		") 0\n}"
+	addDumpTest(v4, "("+v4t+") "+v4s+"\n")
+
+	// C uint8_t array.
+	v5, v5l, v5c := testdata.GetCgoUint8tArray()
+	v5Len := fmt.Sprintf("%d", v5l)
+	v5Cap := fmt.Sprintf("%d", v5c)
+	v5t := "[6]testdata._Ctype_uint8_t"
+	v5s := "(len=" + v5Len + " cap=" + v5Cap + ") " +
+		"{\n 00000000  74 65 73 74 35 00                               " +
+		"  |test5.|\n}"
+	addDumpTest(v5, "("+v5t+") "+v5s+"\n")
+
+	// C typedefed unsigned char array.
+	v6, v6l, v6c := testdata.GetCgoTypdefedUnsignedCharArray()
+	v6Len := fmt.Sprintf("%d", v6l)
+	v6Cap := fmt.Sprintf("%d", v6c)
+	v6t := "[6]testdata._Ctype_custom_uchar_t"
+	v6s := "(len=" + v6Len + " cap=" + v6Cap + ") " +
+		"{\n 00000000  74 65 73 74 36 00                               " +
+		"  |test6.|\n}"
+	addDumpTest(v6, "("+v6t+") "+v6s+"\n")
+}

vendor/github.com/davecgh/go-spew/spew/dumpnocgo_test.go

@@ -0,0 +1,26 @@
+// Copyright (c) 2013 Dave Collins <dave@davec.name>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+// NOTE: Due to the following build constraints, this file will only be compiled
+// when either cgo is not supported or "-tags testcgo" is not added to the go
+// test command line.  This file intentionally does not setup any cgo tests in
+// this scenario.
+// +build !cgo !testcgo
+
+package spew_test
+
+func addCgoDumpTests() {
+	// Don't add any tests for cgo since this file is only compiled when
+	// there should not be any cgo tests.
+}

vendor/github.com/davecgh/go-spew/spew/example_test.go

@@ -0,0 +1,226 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew_test
+
+import (
+	"fmt"
+
+	"github.com/davecgh/go-spew/spew"
+)
+
+type Flag int
+
+const (
+	flagOne Flag = iota
+	flagTwo
+)
+
+var flagStrings = map[Flag]string{
+	flagOne: "flagOne",
+	flagTwo: "flagTwo",
+}
+
+func (f Flag) String() string {
+	if s, ok := flagStrings[f]; ok {
+		return s
+	}
+	return fmt.Sprintf("Unknown flag (%d)", int(f))
+}
+
+type Bar struct {
+	data uintptr
+}
+
+type Foo struct {
+	unexportedField Bar
+	ExportedField   map[interface{}]interface{}
+}
+
+// This example demonstrates how to use Dump to dump variables to stdout.
+func ExampleDump() {
+	// The following package level declarations are assumed for this example:
+	/*
+		type Flag int
+
+		const (
+			flagOne Flag = iota
+			flagTwo
+		)
+
+		var flagStrings = map[Flag]string{
+			flagOne: "flagOne",
+			flagTwo: "flagTwo",
+		}
+
+		func (f Flag) String() string {
+			if s, ok := flagStrings[f]; ok {
+				return s
+			}
+			return fmt.Sprintf("Unknown flag (%d)", int(f))
+		}
+
+		type Bar struct {
+			data uintptr
+		}
+
+		type Foo struct {
+			unexportedField Bar
+			ExportedField   map[interface{}]interface{}
+		}
+	*/
+
+	// Setup some sample data structures for the example.
+	bar := Bar{uintptr(0)}
+	s1 := Foo{bar, map[interface{}]interface{}{"one": true}}
+	f := Flag(5)
+	b := []byte{
+		0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18,
+		0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,
+		0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
+		0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30,
+		0x31, 0x32,
+	}
+
+	// Dump!
+	spew.Dump(s1, f, b)
+
+	// Output:
+	// (spew_test.Foo) {
+	//  unexportedField: (spew_test.Bar) {
+	//   data: (uintptr) <nil>
+	//  },
+	//  ExportedField: (map[interface {}]interface {}) (len=1) {
+	//   (string) (len=3) "one": (bool) true
+	//  }
+	// }
+	// (spew_test.Flag) Unknown flag (5)
+	// ([]uint8) (len=34 cap=34) {
+	//  00000000  11 12 13 14 15 16 17 18  19 1a 1b 1c 1d 1e 1f 20  |............... |
+	//  00000010  21 22 23 24 25 26 27 28  29 2a 2b 2c 2d 2e 2f 30  |!"#$%&'()*+,-./0|
+	//  00000020  31 32                                             |12|
+	// }
+	//
+}
+
+// This example demonstrates how to use Printf to display a variable with a
+// format string and inline formatting.
+func ExamplePrintf() {
+	// Create a double pointer to a uint 8.
+	ui8 := uint8(5)
+	pui8 := &ui8
+	ppui8 := &pui8
+
+	// Create a circular data type.
+	type circular struct {
+		ui8 uint8
+		c   *circular
+	}
+	c := circular{ui8: 1}
+	c.c = &c
+
+	// Print!
+	spew.Printf("ppui8: %v\n", ppui8)
+	spew.Printf("circular: %v\n", c)
+
+	// Output:
+	// ppui8: <**>5
+	// circular: {1 <*>{1 <*><shown>}}
+}
+
+// This example demonstrates how to use a ConfigState.
+func ExampleConfigState() {
+	// Modify the indent level of the ConfigState only.  The global
+	// configuration is not modified.
+	scs := spew.ConfigState{Indent: "\t"}
+
+	// Output using the ConfigState instance.
+	v := map[string]int{"one": 1}
+	scs.Printf("v: %v\n", v)
+	scs.Dump(v)
+
+	// Output:
+	// v: map[one:1]
+	// (map[string]int) (len=1) {
+	// 	(string) (len=3) "one": (int) 1
+	// }
+}
+
+// This example demonstrates how to use ConfigState.Dump to dump variables to
+// stdout
+func ExampleConfigState_Dump() {
+	// See the top-level Dump example for details on the types used in this
+	// example.
+
+	// Create two ConfigState instances with different indentation.
+	scs := spew.ConfigState{Indent: "\t"}
+	scs2 := spew.ConfigState{Indent: " "}
+
+	// Setup some sample data structures for the example.
+	bar := Bar{uintptr(0)}
+	s1 := Foo{bar, map[interface{}]interface{}{"one": true}}
+
+	// Dump using the ConfigState instances.
+	scs.Dump(s1)
+	scs2.Dump(s1)
+
+	// Output:
+	// (spew_test.Foo) {
+	// 	unexportedField: (spew_test.Bar) {
+	// 		data: (uintptr) <nil>
+	// 	},
+	// 	ExportedField: (map[interface {}]interface {}) (len=1) {
+	//		(string) (len=3) "one": (bool) true
+	// 	}
+	// }
+	// (spew_test.Foo) {
+	//  unexportedField: (spew_test.Bar) {
+	//   data: (uintptr) <nil>
+	//  },
+	//  ExportedField: (map[interface {}]interface {}) (len=1) {
+	//   (string) (len=3) "one": (bool) true
+	//  }
+	// }
+	//
+}
+
+// This example demonstrates how to use ConfigState.Printf to display a variable
+// with a format string and inline formatting.
+func ExampleConfigState_Printf() {
+	// See the top-level Dump example for details on the types used in this
+	// example.
+
+	// Create two ConfigState instances and modify the method handling of the
+	// first ConfigState only.
+	scs := spew.NewDefaultConfig()
+	scs2 := spew.NewDefaultConfig()
+	scs.DisableMethods = true
+
+	// Alternatively
+	// scs := spew.ConfigState{Indent: " ", DisableMethods: true}
+	// scs2 := spew.ConfigState{Indent: " "}
+
+	// This is of type Flag which implements a Stringer and has raw value 1.
+	f := flagTwo
+
+	// Dump using the ConfigState instances.
+	scs.Printf("f: %v\n", f)
+	scs2.Printf("f: %v\n", f)
+
+	// Output:
+	// f: 1
+	// f: flagTwo
+}

vendor/github.com/davecgh/go-spew/spew/format.go

@@ -0,0 +1,419 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"fmt"
+	"reflect"
+	"strconv"
+	"strings"
+)
+
+// supportedFlags is a list of all the character flags supported by fmt package.
+const supportedFlags = "0-+# "
+
+// formatState implements the fmt.Formatter interface and contains information
+// about the state of a formatting operation.  The NewFormatter function can
+// be used to get a new Formatter which can be used directly as arguments
+// in standard fmt package printing calls.
+type formatState struct {
+	value          interface{}
+	fs             fmt.State
+	depth          int
+	pointers       map[uintptr]int
+	ignoreNextType bool
+	cs             *ConfigState
+}
+
+// buildDefaultFormat recreates the original format string without precision
+// and width information to pass in to fmt.Sprintf in the case of an
+// unrecognized type.  Unless new types are added to the language, this
+// function won't ever be called.
+func (f *formatState) buildDefaultFormat() (format string) {
+	buf := bytes.NewBuffer(percentBytes)
+
+	for _, flag := range supportedFlags {
+		if f.fs.Flag(int(flag)) {
+			buf.WriteRune(flag)
+		}
+	}
+
+	buf.WriteRune('v')
+
+	format = buf.String()
+	return format
+}
+
+// constructOrigFormat recreates the original format string including precision
+// and width information to pass along to the standard fmt package.  This allows
+// automatic deferral of all format strings this package doesn't support.
+func (f *formatState) constructOrigFormat(verb rune) (format string) {
+	buf := bytes.NewBuffer(percentBytes)
+
+	for _, flag := range supportedFlags {
+		if f.fs.Flag(int(flag)) {
+			buf.WriteRune(flag)
+		}
+	}
+
+	if width, ok := f.fs.Width(); ok {
+		buf.WriteString(strconv.Itoa(width))
+	}
+
+	if precision, ok := f.fs.Precision(); ok {
+		buf.Write(precisionBytes)
+		buf.WriteString(strconv.Itoa(precision))
+	}
+
+	buf.WriteRune(verb)
+
+	format = buf.String()
+	return format
+}
+
+// unpackValue returns values inside of non-nil interfaces when possible and
+// ensures that types for values which have been unpacked from an interface
+// are displayed when the show types flag is also set.
+// This is useful for data types like structs, arrays, slices, and maps which
+// can contain varying types packed inside an interface.
+func (f *formatState) unpackValue(v reflect.Value) reflect.Value {
+	if v.Kind() == reflect.Interface {
+		f.ignoreNextType = false
+		if !v.IsNil() {
+			v = v.Elem()
+		}
+	}
+	return v
+}
+
+// formatPtr handles formatting of pointers by indirecting them as necessary.
+func (f *formatState) formatPtr(v reflect.Value) {
+	// Display nil if top level pointer is nil.
+	showTypes := f.fs.Flag('#')
+	if v.IsNil() && (!showTypes || f.ignoreNextType) {
+		f.fs.Write(nilAngleBytes)
+		return
+	}
+
+	// Remove pointers at or below the current depth from map used to detect
+	// circular refs.
+	for k, depth := range f.pointers {
+		if depth >= f.depth {
+			delete(f.pointers, k)
+		}
+	}
+
+	// Keep list of all dereferenced pointers to possibly show later.
+	pointerChain := make([]uintptr, 0)
+
+	// Figure out how many levels of indirection there are by derferencing
+	// pointers and unpacking interfaces down the chain while detecting circular
+	// references.
+	nilFound := false
+	cycleFound := false
+	indirects := 0
+	ve := v
+	for ve.Kind() == reflect.Ptr {
+		if ve.IsNil() {
+			nilFound = true
+			break
+		}
+		indirects++
+		addr := ve.Pointer()
+		pointerChain = append(pointerChain, addr)
+		if pd, ok := f.pointers[addr]; ok && pd < f.depth {
+			cycleFound = true
+			indirects--
+			break
+		}
+		f.pointers[addr] = f.depth
+
+		ve = ve.Elem()
+		if ve.Kind() == reflect.Interface {
+			if ve.IsNil() {
+				nilFound = true
+				break
+			}
+			ve = ve.Elem()
+		}
+	}
+
+	// Display type or indirection level depending on flags.
+	if showTypes && !f.ignoreNextType {
+		f.fs.Write(openParenBytes)
+		f.fs.Write(bytes.Repeat(asteriskBytes, indirects))
+		f.fs.Write([]byte(ve.Type().String()))
+		f.fs.Write(closeParenBytes)
+	} else {
+		if nilFound || cycleFound {
+			indirects += strings.Count(ve.Type().String(), "*")
+		}
+		f.fs.Write(openAngleBytes)
+		f.fs.Write([]byte(strings.Repeat("*", indirects)))
+		f.fs.Write(closeAngleBytes)
+	}
+
+	// Display pointer information depending on flags.
+	if f.fs.Flag('+') && (len(pointerChain) > 0) {
+		f.fs.Write(openParenBytes)
+		for i, addr := range pointerChain {
+			if i > 0 {
+				f.fs.Write(pointerChainBytes)
+			}
+			printHexPtr(f.fs, addr)
+		}
+		f.fs.Write(closeParenBytes)
+	}
+
+	// Display dereferenced value.
+	switch {
+	case nilFound == true:
+		f.fs.Write(nilAngleBytes)
+
+	case cycleFound == true:
+		f.fs.Write(circularShortBytes)
+
+	default:
+		f.ignoreNextType = true
+		f.format(ve)
+	}
+}
+
+// format is the main workhorse for providing the Formatter interface.  It
+// uses the passed reflect value to figure out what kind of object we are
+// dealing with and formats it appropriately.  It is a recursive function,
+// however circular data structures are detected and handled properly.
+func (f *formatState) format(v reflect.Value) {
+	// Handle invalid reflect values immediately.
+	kind := v.Kind()
+	if kind == reflect.Invalid {
+		f.fs.Write(invalidAngleBytes)
+		return
+	}
+
+	// Handle pointers specially.
+	if kind == reflect.Ptr {
+		f.formatPtr(v)
+		return
+	}
+
+	// Print type information unless already handled elsewhere.
+	if !f.ignoreNextType && f.fs.Flag('#') {
+		f.fs.Write(openParenBytes)
+		f.fs.Write([]byte(v.Type().String()))
+		f.fs.Write(closeParenBytes)
+	}
+	f.ignoreNextType = false
+
+	// Call Stringer/error interfaces if they exist and the handle methods
+	// flag is enabled.
+	if !f.cs.DisableMethods {
+		if (kind != reflect.Invalid) && (kind != reflect.Interface) {
+			if handled := handleMethods(f.cs, f.fs, v); handled {
+				return
+			}
+		}
+	}
+
+	switch kind {
+	case reflect.Invalid:
+		// Do nothing.  We should never get here since invalid has already
+		// been handled above.
+
+	case reflect.Bool:
+		printBool(f.fs, v.Bool())
+
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		printInt(f.fs, v.Int(), 10)
+
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		printUint(f.fs, v.Uint(), 10)
+
+	case reflect.Float32:
+		printFloat(f.fs, v.Float(), 32)
+
+	case reflect.Float64:
+		printFloat(f.fs, v.Float(), 64)
+
+	case reflect.Complex64:
+		printComplex(f.fs, v.Complex(), 32)
+
+	case reflect.Complex128:
+		printComplex(f.fs, v.Complex(), 64)
+
+	case reflect.Slice:
+		if v.IsNil() {
+			f.fs.Write(nilAngleBytes)
+			break
+		}
+		fallthrough
+
+	case reflect.Array:
+		f.fs.Write(openBracketBytes)
+		f.depth++
+		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+			f.fs.Write(maxShortBytes)
+		} else {
+			numEntries := v.Len()
+			for i := 0; i < numEntries; i++ {
+				if i > 0 {
+					f.fs.Write(spaceBytes)
+				}
+				f.ignoreNextType = true
+				f.format(f.unpackValue(v.Index(i)))
+			}
+		}
+		f.depth--
+		f.fs.Write(closeBracketBytes)
+
+	case reflect.String:
+		f.fs.Write([]byte(v.String()))
+
+	case reflect.Interface:
+		// The only time we should get here is for nil interfaces due to
+		// unpackValue calls.
+		if v.IsNil() {
+			f.fs.Write(nilAngleBytes)
+		}
+
+	case reflect.Ptr:
+		// Do nothing.  We should never get here since pointers have already
+		// been handled above.
+
+	case reflect.Map:
+		// nil maps should be indicated as different than empty maps
+		if v.IsNil() {
+			f.fs.Write(nilAngleBytes)
+			break
+		}
+
+		f.fs.Write(openMapBytes)
+		f.depth++
+		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+			f.fs.Write(maxShortBytes)
+		} else {
+			keys := v.MapKeys()
+			if f.cs.SortKeys {
+				sortValues(keys, f.cs)
+			}
+			for i, key := range keys {
+				if i > 0 {
+					f.fs.Write(spaceBytes)
+				}
+				f.ignoreNextType = true
+				f.format(f.unpackValue(key))
+				f.fs.Write(colonBytes)
+				f.ignoreNextType = true
+				f.format(f.unpackValue(v.MapIndex(key)))
+			}
+		}
+		f.depth--
+		f.fs.Write(closeMapBytes)
+
+	case reflect.Struct:
+		numFields := v.NumField()
+		f.fs.Write(openBraceBytes)
+		f.depth++
+		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+			f.fs.Write(maxShortBytes)
+		} else {
+			vt := v.Type()
+			for i := 0; i < numFields; i++ {
+				if i > 0 {
+					f.fs.Write(spaceBytes)
+				}
+				vtf := vt.Field(i)
+				if f.fs.Flag('+') || f.fs.Flag('#') {
+					f.fs.Write([]byte(vtf.Name))
+					f.fs.Write(colonBytes)
+				}
+				f.format(f.unpackValue(v.Field(i)))
+			}
+		}
+		f.depth--
+		f.fs.Write(closeBraceBytes)
+
+	case reflect.Uintptr:
+		printHexPtr(f.fs, uintptr(v.Uint()))
+
+	case reflect.UnsafePointer, reflect.Chan, reflect.Func:
+		printHexPtr(f.fs, v.Pointer())
+
+	// There were not any other types at the time this code was written, but
+	// fall back to letting the default fmt package handle it if any get added.
+	default:
+		format := f.buildDefaultFormat()
+		if v.CanInterface() {
+			fmt.Fprintf(f.fs, format, v.Interface())
+		} else {
+			fmt.Fprintf(f.fs, format, v.String())
+		}
+	}
+}
+
+// Format satisfies the fmt.Formatter interface. See NewFormatter for usage
+// details.
+func (f *formatState) Format(fs fmt.State, verb rune) {
+	f.fs = fs
+
+	// Use standard formatting for verbs that are not v.
+	if verb != 'v' {
+		format := f.constructOrigFormat(verb)
+		fmt.Fprintf(fs, format, f.value)
+		return
+	}
+
+	if f.value == nil {
+		if fs.Flag('#') {
+			fs.Write(interfaceBytes)
+		}
+		fs.Write(nilAngleBytes)
+		return
+	}
+
+	f.format(reflect.ValueOf(f.value))
+}
+
+// newFormatter is a helper function to consolidate the logic from the various
+// public methods which take varying config states.
+func newFormatter(cs *ConfigState, v interface{}) fmt.Formatter {
+	fs := &formatState{value: v, cs: cs}
+	fs.pointers = make(map[uintptr]int)
+	return fs
+}
+
+/*
+NewFormatter returns a custom formatter that satisfies the fmt.Formatter
+interface.  As a result, it integrates cleanly with standard fmt package
+printing functions.  The formatter is useful for inline printing of smaller data
+types similar to the standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
+combinations.  Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting.  In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Typically this function shouldn't be called directly.  It is much easier to make
+use of the custom formatter by calling one of the convenience functions such as
+Printf, Println, or Fprintf.
+*/
+func NewFormatter(v interface{}) fmt.Formatter {
+	return newFormatter(&Config, v)
+}

vendor/github.com/davecgh/go-spew/spew/internal_test.go

@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+This test file is part of the spew package rather than than the spew_test
+package because it needs access to internals to properly test certain cases
+which are not possible via the public interface since they should never happen.
+*/
+
+package spew
+
+import (
+	"bytes"
+	"reflect"
+	"testing"
+)
+
+// dummyFmtState implements a fake fmt.State to use for testing invalid
+// reflect.Value handling.  This is necessary because the fmt package catches
+// invalid values before invoking the formatter on them.
+type dummyFmtState struct {
+	bytes.Buffer
+}
+
+func (dfs *dummyFmtState) Flag(f int) bool {
+	if f == int('+') {
+		return true
+	}
+	return false
+}
+
+func (dfs *dummyFmtState) Precision() (int, bool) {
+	return 0, false
+}
+
+func (dfs *dummyFmtState) Width() (int, bool) {
+	return 0, false
+}
+
+// TestInvalidReflectValue ensures the dump and formatter code handles an
+// invalid reflect value properly.  This needs access to internal state since it
+// should never happen in real code and therefore can't be tested via the public
+// API.
+func TestInvalidReflectValue(t *testing.T) {
+	i := 1
+
+	// Dump invalid reflect value.
+	v := new(reflect.Value)
+	buf := new(bytes.Buffer)
+	d := dumpState{w: buf, cs: &Config}
+	d.dump(*v)
+	s := buf.String()
+	want := "<invalid>"
+	if s != want {
+		t.Errorf("InvalidReflectValue #%d\n got: %s want: %s", i, s, want)
+	}
+	i++
+
+	// Formatter invalid reflect value.
+	buf2 := new(dummyFmtState)
+	f := formatState{value: *v, cs: &Config, fs: buf2}
+	f.format(*v)
+	s = buf2.String()
+	want = "<invalid>"
+	if s != want {
+		t.Errorf("InvalidReflectValue #%d got: %s want: %s", i, s, want)
+	}
+}
+
+// SortValues makes the internal sortValues function available to the test
+// package.
+func SortValues(values []reflect.Value, cs *ConfigState) {
+	sortValues(values, cs)
+}

vendor/github.com/davecgh/go-spew/spew/internalunsafe_test.go

@@ -0,0 +1,102 @@
+// Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+// NOTE: Due to the following build constraints, this file will only be compiled
+// when the code is not running on Google App Engine, compiled by GopherJS, and
+// "-tags safe" is not added to the go build command line.  The "disableunsafe"
+// tag is deprecated and thus should not be used.
+// +build !js,!appengine,!safe,!disableunsafe
+
+/*
+This test file is part of the spew package rather than than the spew_test
+package because it needs access to internals to properly test certain cases
+which are not possible via the public interface since they should never happen.
+*/
+
+package spew
+
+import (
+	"bytes"
+	"reflect"
+	"testing"
+	"unsafe"
+)
+
+// changeKind uses unsafe to intentionally change the kind of a reflect.Value to
+// the maximum kind value which does not exist.  This is needed to test the
+// fallback code which punts to the standard fmt library for new types that
+// might get added to the language.
+func changeKind(v *reflect.Value, readOnly bool) {
+	rvf := (*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(v)) + offsetFlag))
+	*rvf = *rvf | ((1<<flagKindWidth - 1) << flagKindShift)
+	if readOnly {
+		*rvf |= flagRO
+	} else {
+		*rvf &= ^uintptr(flagRO)
+	}
+}
+
+// TestAddedReflectValue tests functionaly of the dump and formatter code which
+// falls back to the standard fmt library for new types that might get added to
+// the language.
+func TestAddedReflectValue(t *testing.T) {
+	i := 1
+
+	// Dump using a reflect.Value that is exported.
+	v := reflect.ValueOf(int8(5))
+	changeKind(&v, false)
+	buf := new(bytes.Buffer)
+	d := dumpState{w: buf, cs: &Config}
+	d.dump(v)
+	s := buf.String()
+	want := "(int8) 5"
+	if s != want {
+		t.Errorf("TestAddedReflectValue #%d\n got: %s want: %s", i, s, want)
+	}
+	i++
+
+	// Dump using a reflect.Value that is not exported.
+	changeKind(&v, true)
+	buf.Reset()
+	d.dump(v)
+	s = buf.String()
+	want = "(int8) <int8 Value>"
+	if s != want {
+		t.Errorf("TestAddedReflectValue #%d\n got: %s want: %s", i, s, want)
+	}
+	i++
+
+	// Formatter using a reflect.Value that is exported.
+	changeKind(&v, false)
+	buf2 := new(dummyFmtState)
+	f := formatState{value: v, cs: &Config, fs: buf2}
+	f.format(v)
+	s = buf2.String()
+	want = "5"
+	if s != want {
+		t.Errorf("TestAddedReflectValue #%d got: %s want: %s", i, s, want)
+	}
+	i++
+
+	// Formatter using a reflect.Value that is not exported.
+	changeKind(&v, true)
+	buf2.Reset()
+	f = formatState{value: v, cs: &Config, fs: buf2}
+	f.format(v)
+	s = buf2.String()
+	want = "<int8 Value>"
+	if s != want {
+		t.Errorf("TestAddedReflectValue #%d got: %s want: %s", i, s, want)
+	}
+}

vendor/github.com/davecgh/go-spew/spew/spew.go

@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"fmt"
+	"io"
+)
+
+// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the formatted string as a value that satisfies error.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Errorf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Errorf(format string, a ...interface{}) (err error) {
+	return fmt.Errorf(format, convertArgs(a)...)
+}
+
+// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprint(w, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprint(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprint(w, convertArgs(a)...)
+}
+
+// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintf(w, format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
+	return fmt.Fprintf(w, format, convertArgs(a)...)
+}
+
+// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
+// passed with a default Formatter interface returned by NewFormatter.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintln(w, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprintln(w, convertArgs(a)...)
+}
+
+// Print is a wrapper for fmt.Print that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Print(spew.NewFormatter(a), spew.NewFormatter(b))
+func Print(a ...interface{}) (n int, err error) {
+	return fmt.Print(convertArgs(a)...)
+}
+
+// Printf is a wrapper for fmt.Printf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Printf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Printf(format string, a ...interface{}) (n int, err error) {
+	return fmt.Printf(format, convertArgs(a)...)
+}
+
+// Println is a wrapper for fmt.Println that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Println(spew.NewFormatter(a), spew.NewFormatter(b))
+func Println(a ...interface{}) (n int, err error) {
+	return fmt.Println(convertArgs(a)...)
+}
+
+// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprint(spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprint(a ...interface{}) string {
+	return fmt.Sprint(convertArgs(a)...)
+}
+
+// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprintf(format string, a ...interface{}) string {
+	return fmt.Sprintf(format, convertArgs(a)...)
+}
+
+// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
+// were passed with a default Formatter interface returned by NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintln(spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprintln(a ...interface{}) string {
+	return fmt.Sprintln(convertArgs(a)...)
+}
+
+// convertArgs accepts a slice of arguments and returns a slice of the same
+// length with each argument converted to a default spew Formatter interface.
+func convertArgs(args []interface{}) (formatters []interface{}) {
+	formatters = make([]interface{}, len(args))
+	for index, arg := range args {
+		formatters[index] = NewFormatter(arg)
+	}
+	return formatters
+}

vendor/github.com/davecgh/go-spew/spew/spew_test.go

@@ -0,0 +1,320 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew_test
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"testing"
+
+	"github.com/davecgh/go-spew/spew"
+)
+
+// spewFunc is used to identify which public function of the spew package or
+// ConfigState a test applies to.
+type spewFunc int
+
+const (
+	fCSFdump spewFunc = iota
+	fCSFprint
+	fCSFprintf
+	fCSFprintln
+	fCSPrint
+	fCSPrintln
+	fCSSdump
+	fCSSprint
+	fCSSprintf
+	fCSSprintln
+	fCSErrorf
+	fCSNewFormatter
+	fErrorf
+	fFprint
+	fFprintln
+	fPrint
+	fPrintln
+	fSdump
+	fSprint
+	fSprintf
+	fSprintln
+)
+
+// Map of spewFunc values to names for pretty printing.
+var spewFuncStrings = map[spewFunc]string{
+	fCSFdump:        "ConfigState.Fdump",
+	fCSFprint:       "ConfigState.Fprint",
+	fCSFprintf:      "ConfigState.Fprintf",
+	fCSFprintln:     "ConfigState.Fprintln",
+	fCSSdump:        "ConfigState.Sdump",
+	fCSPrint:        "ConfigState.Print",
+	fCSPrintln:      "ConfigState.Println",
+	fCSSprint:       "ConfigState.Sprint",
+	fCSSprintf:      "ConfigState.Sprintf",
+	fCSSprintln:     "ConfigState.Sprintln",
+	fCSErrorf:       "ConfigState.Errorf",
+	fCSNewFormatter: "ConfigState.NewFormatter",
+	fErrorf:         "spew.Errorf",
+	fFprint:         "spew.Fprint",
+	fFprintln:       "spew.Fprintln",
+	fPrint:          "spew.Print",
+	fPrintln:        "spew.Println",
+	fSdump:          "spew.Sdump",
+	fSprint:         "spew.Sprint",
+	fSprintf:        "spew.Sprintf",
+	fSprintln:       "spew.Sprintln",
+}
+
+func (f spewFunc) String() string {
+	if s, ok := spewFuncStrings[f]; ok {
+		return s
+	}
+	return fmt.Sprintf("Unknown spewFunc (%d)", int(f))
+}
+
+// spewTest is used to describe a test to be performed against the public
+// functions of the spew package or ConfigState.
+type spewTest struct {
+	cs     *spew.ConfigState
+	f      spewFunc
+	format string
+	in     interface{}
+	want   string
+}
+
+// spewTests houses the tests to be performed against the public functions of
+// the spew package and ConfigState.
+//
+// These tests are only intended to ensure the public functions are exercised
+// and are intentionally not exhaustive of types.  The exhaustive type
+// tests are handled in the dump and format tests.
+var spewTests []spewTest
+
+// redirStdout is a helper function to return the standard output from f as a
+// byte slice.
+func redirStdout(f func()) ([]byte, error) {
+	tempFile, err := ioutil.TempFile("", "ss-test")
+	if err != nil {
+		return nil, err
+	}
+	fileName := tempFile.Name()
+	defer os.Remove(fileName) // Ignore error
+
+	origStdout := os.Stdout
+	os.Stdout = tempFile
+	f()
+	os.Stdout = origStdout
+	tempFile.Close()
+
+	return ioutil.ReadFile(fileName)
+}
+
+func initSpewTests() {
+	// Config states with various settings.
+	scsDefault := spew.NewDefaultConfig()
+	scsNoMethods := &spew.ConfigState{Indent: " ", DisableMethods: true}
+	scsNoPmethods := &spew.ConfigState{Indent: " ", DisablePointerMethods: true}
+	scsMaxDepth := &spew.ConfigState{Indent: " ", MaxDepth: 1}
+	scsContinue := &spew.ConfigState{Indent: " ", ContinueOnMethod: true}
+	scsNoPtrAddr := &spew.ConfigState{DisablePointerAddresses: true}
+	scsNoCap := &spew.ConfigState{DisableCapacities: true}
+
+	// Variables for tests on types which implement Stringer interface with and
+	// without a pointer receiver.
+	ts := stringer("test")
+	tps := pstringer("test")
+
+	type ptrTester struct {
+		s *struct{}
+	}
+	tptr := &ptrTester{s: &struct{}{}}
+
+	// depthTester is used to test max depth handling for structs, array, slices
+	// and maps.
+	type depthTester struct {
+		ic    indirCir1
+		arr   [1]string
+		slice []string
+		m     map[string]int
+	}
+	dt := depthTester{indirCir1{nil}, [1]string{"arr"}, []string{"slice"},
+		map[string]int{"one": 1}}
+
+	// Variable for tests on types which implement error interface.
+	te := customError(10)
+
+	spewTests = []spewTest{
+		{scsDefault, fCSFdump, "", int8(127), "(int8) 127\n"},
+		{scsDefault, fCSFprint, "", int16(32767), "32767"},
+		{scsDefault, fCSFprintf, "%v", int32(2147483647), "2147483647"},
+		{scsDefault, fCSFprintln, "", int(2147483647), "2147483647\n"},
+		{scsDefault, fCSPrint, "", int64(9223372036854775807), "9223372036854775807"},
+		{scsDefault, fCSPrintln, "", uint8(255), "255\n"},
+		{scsDefault, fCSSdump, "", uint8(64), "(uint8) 64\n"},
+		{scsDefault, fCSSprint, "", complex(1, 2), "(1+2i)"},
+		{scsDefault, fCSSprintf, "%v", complex(float32(3), 4), "(3+4i)"},
+		{scsDefault, fCSSprintln, "", complex(float64(5), 6), "(5+6i)\n"},
+		{scsDefault, fCSErrorf, "%#v", uint16(65535), "(uint16)65535"},
+		{scsDefault, fCSNewFormatter, "%v", uint32(4294967295), "4294967295"},
+		{scsDefault, fErrorf, "%v", uint64(18446744073709551615), "18446744073709551615"},
+		{scsDefault, fFprint, "", float32(3.14), "3.14"},
+		{scsDefault, fFprintln, "", float64(6.28), "6.28\n"},
+		{scsDefault, fPrint, "", true, "true"},
+		{scsDefault, fPrintln, "", false, "false\n"},
+		{scsDefault, fSdump, "", complex(-10, -20), "(complex128) (-10-20i)\n"},
+		{scsDefault, fSprint, "", complex(-1, -2), "(-1-2i)"},
+		{scsDefault, fSprintf, "%v", complex(float32(-3), -4), "(-3-4i)"},
+		{scsDefault, fSprintln, "", complex(float64(-5), -6), "(-5-6i)\n"},
+		{scsNoMethods, fCSFprint, "", ts, "test"},
+		{scsNoMethods, fCSFprint, "", &ts, "<*>test"},
+		{scsNoMethods, fCSFprint, "", tps, "test"},
+		{scsNoMethods, fCSFprint, "", &tps, "<*>test"},
+		{scsNoPmethods, fCSFprint, "", ts, "stringer test"},
+		{scsNoPmethods, fCSFprint, "", &ts, "<*>stringer test"},
+		{scsNoPmethods, fCSFprint, "", tps, "test"},
+		{scsNoPmethods, fCSFprint, "", &tps, "<*>stringer test"},
+		{scsMaxDepth, fCSFprint, "", dt, "{{<max>} [<max>] [<max>] map[<max>]}"},
+		{scsMaxDepth, fCSFdump, "", dt, "(spew_test.depthTester) {\n" +
+			" ic: (spew_test.indirCir1) {\n  <max depth reached>\n },\n" +
+			" arr: ([1]string) (len=1 cap=1) {\n  <max depth reached>\n },\n" +
+			" slice: ([]string) (len=1 cap=1) {\n  <max depth reached>\n },\n" +
+			" m: (map[string]int) (len=1) {\n  <max depth reached>\n }\n}\n"},
+		{scsContinue, fCSFprint, "", ts, "(stringer test) test"},
+		{scsContinue, fCSFdump, "", ts, "(spew_test.stringer) " +
+			"(len=4) (stringer test) \"test\"\n"},
+		{scsContinue, fCSFprint, "", te, "(error: 10) 10"},
+		{scsContinue, fCSFdump, "", te, "(spew_test.customError) " +
+			"(error: 10) 10\n"},
+		{scsNoPtrAddr, fCSFprint, "", tptr, "<*>{<*>{}}"},
+		{scsNoPtrAddr, fCSSdump, "", tptr, "(*spew_test.ptrTester)({\ns: (*struct {})({\n})\n})\n"},
+		{scsNoCap, fCSSdump, "", make([]string, 0, 10), "([]string) {\n}\n"},
+		{scsNoCap, fCSSdump, "", make([]string, 1, 10), "([]string) (len=1) {\n(string) \"\"\n}\n"},
+	}
+}
+
+// TestSpew executes all of the tests described by spewTests.
+func TestSpew(t *testing.T) {
+	initSpewTests()
+
+	t.Logf("Running %d tests", len(spewTests))
+	for i, test := range spewTests {
+		buf := new(bytes.Buffer)
+		switch test.f {
+		case fCSFdump:
+			test.cs.Fdump(buf, test.in)
+
+		case fCSFprint:
+			test.cs.Fprint(buf, test.in)
+
+		case fCSFprintf:
+			test.cs.Fprintf(buf, test.format, test.in)
+
+		case fCSFprintln:
+			test.cs.Fprintln(buf, test.in)
+
+		case fCSPrint:
+			b, err := redirStdout(func() { test.cs.Print(test.in) })
+			if err != nil {
+				t.Errorf("%v #%d %v", test.f, i, err)
+				continue
+			}
+			buf.Write(b)
+
+		case fCSPrintln:
+			b, err := redirStdout(func() { test.cs.Println(test.in) })
+			if err != nil {
+				t.Errorf("%v #%d %v", test.f, i, err)
+				continue
+			}
+			buf.Write(b)
+
+		case fCSSdump:
+			str := test.cs.Sdump(test.in)
+			buf.WriteString(str)
+
+		case fCSSprint:
+			str := test.cs.Sprint(test.in)
+			buf.WriteString(str)
+
+		case fCSSprintf:
+			str := test.cs.Sprintf(test.format, test.in)
+			buf.WriteString(str)
+
+		case fCSSprintln:
+			str := test.cs.Sprintln(test.in)
+			buf.WriteString(str)
+
+		case fCSErrorf:
+			err := test.cs.Errorf(test.format, test.in)
+			buf.WriteString(err.Error())
+
+		case fCSNewFormatter:
+			fmt.Fprintf(buf, test.format, test.cs.NewFormatter(test.in))
+
+		case fErrorf:
+			err := spew.Errorf(test.format, test.in)
+			buf.WriteString(err.Error())
+
+		case fFprint:
+			spew.Fprint(buf, test.in)
+
+		case fFprintln:
+			spew.Fprintln(buf, test.in)
+
+		case fPrint:
+			b, err := redirStdout(func() { spew.Print(test.in) })
+			if err != nil {
+				t.Errorf("%v #%d %v", test.f, i, err)
+				continue
+			}
+			buf.Write(b)
+
+		case fPrintln:
+			b, err := redirStdout(func() { spew.Println(test.in) })
+			if err != nil {
+				t.Errorf("%v #%d %v", test.f, i, err)
+				continue
+			}
+			buf.Write(b)
+
+		case fSdump:
+			str := spew.Sdump(test.in)
+			buf.WriteString(str)
+
+		case fSprint:
+			str := spew.Sprint(test.in)
+			buf.WriteString(str)
+
+		case fSprintf:
+			str := spew.Sprintf(test.format, test.in)
+			buf.WriteString(str)
+
+		case fSprintln:
+			str := spew.Sprintln(test.in)
+			buf.WriteString(str)
+
+		default:
+			t.Errorf("%v #%d unrecognized function", test.f, i)
+			continue
+		}
+		s := buf.String()
+		if test.want != s {
+			t.Errorf("ConfigState #%d\n got: %s want: %s", i, s, test.want)
+			continue
+		}
+	}
+}

vendor/github.com/davecgh/go-spew/spew/testdata/dumpcgo.go

@@ -0,0 +1,82 @@
+// Copyright (c) 2013 Dave Collins <dave@davec.name>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+// NOTE: Due to the following build constraints, this file will only be compiled
+// when both cgo is supported and "-tags testcgo" is added to the go test
+// command line.  This code should really only be in the dumpcgo_test.go file,
+// but unfortunately Go will not allow cgo in test files, so this is a
+// workaround to allow cgo types to be tested.  This configuration is used
+// because spew itself does not require cgo to run even though it does handle
+// certain cgo types specially.  Rather than forcing all clients to require cgo
+// and an external C compiler just to run the tests, this scheme makes them
+// optional.
+// +build cgo,testcgo
+
+package testdata
+
+/*
+#include <stdint.h>
+typedef unsigned char custom_uchar_t;
+
+char            *ncp = 0;
+char            *cp = "test";
+char             ca[6] = {'t', 'e', 's', 't', '2', '\0'};
+unsigned char    uca[6] = {'t', 'e', 's', 't', '3', '\0'};
+signed char      sca[6] = {'t', 'e', 's', 't', '4', '\0'};
+uint8_t          ui8ta[6] = {'t', 'e', 's', 't', '5', '\0'};
+custom_uchar_t   tuca[6] = {'t', 'e', 's', 't', '6', '\0'};
+*/
+import "C"
+
+// GetCgoNullCharPointer returns a null char pointer via cgo.  This is only
+// used for tests.
+func GetCgoNullCharPointer() interface{} {
+	return C.ncp
+}
+
+// GetCgoCharPointer returns a char pointer via cgo.  This is only used for
+// tests.
+func GetCgoCharPointer() interface{} {
+	return C.cp
+}
+
+// GetCgoCharArray returns a char array via cgo and the array's len and cap.
+// This is only used for tests.
+func GetCgoCharArray() (interface{}, int, int) {
+	return C.ca, len(C.ca), cap(C.ca)
+}
+
+// GetCgoUnsignedCharArray returns an unsigned char array via cgo and the
+// array's len and cap.  This is only used for tests.
+func GetCgoUnsignedCharArray() (interface{}, int, int) {
+	return C.uca, len(C.uca), cap(C.uca)
+}
+
+// GetCgoSignedCharArray returns a signed char array via cgo and the array's len
+// and cap.  This is only used for tests.
+func GetCgoSignedCharArray() (interface{}, int, int) {
+	return C.sca, len(C.sca), cap(C.sca)
+}
+
+// GetCgoUint8tArray returns a uint8_t array via cgo and the array's len and
+// cap.  This is only used for tests.
+func GetCgoUint8tArray() (interface{}, int, int) {
+	return C.ui8ta, len(C.ui8ta), cap(C.ui8ta)
+}
+
+// GetCgoTypdefedUnsignedCharArray returns a typedefed unsigned char array via
+// cgo and the array's len and cap.  This is only used for tests.
+func GetCgoTypdefedUnsignedCharArray() (interface{}, int, int) {
+	return C.tuca, len(C.tuca), cap(C.tuca)
+}

vendor/github.com/davecgh/go-spew/test_coverage.txt

@@ -0,0 +1,61 @@
+
+github.com/davecgh/go-spew/spew/dump.go		 dumpState.dump			 100.00% (88/88)
+github.com/davecgh/go-spew/spew/format.go	 formatState.format		 100.00% (82/82)
+github.com/davecgh/go-spew/spew/format.go	 formatState.formatPtr		 100.00% (52/52)
+github.com/davecgh/go-spew/spew/dump.go		 dumpState.dumpPtr		 100.00% (44/44)
+github.com/davecgh/go-spew/spew/dump.go		 dumpState.dumpSlice		 100.00% (39/39)
+github.com/davecgh/go-spew/spew/common.go	 handleMethods			 100.00% (30/30)
+github.com/davecgh/go-spew/spew/common.go	 printHexPtr			 100.00% (18/18)
+github.com/davecgh/go-spew/spew/common.go	 unsafeReflectValue		 100.00% (13/13)
+github.com/davecgh/go-spew/spew/format.go	 formatState.constructOrigFormat 100.00% (12/12)
+github.com/davecgh/go-spew/spew/dump.go		 fdump				 100.00% (11/11)
+github.com/davecgh/go-spew/spew/format.go	 formatState.Format		 100.00% (11/11)
+github.com/davecgh/go-spew/spew/common.go	 init				 100.00% (10/10)
+github.com/davecgh/go-spew/spew/common.go	 printComplex			 100.00% (9/9)
+github.com/davecgh/go-spew/spew/common.go	 valuesSorter.Less		 100.00% (8/8)
+github.com/davecgh/go-spew/spew/format.go	 formatState.buildDefaultFormat	 100.00% (7/7)
+github.com/davecgh/go-spew/spew/format.go	 formatState.unpackValue	 100.00% (5/5)
+github.com/davecgh/go-spew/spew/dump.go		 dumpState.indent		 100.00% (4/4)
+github.com/davecgh/go-spew/spew/common.go	 catchPanic			 100.00% (4/4)
+github.com/davecgh/go-spew/spew/config.go	 ConfigState.convertArgs	 100.00% (4/4)
+github.com/davecgh/go-spew/spew/spew.go		 convertArgs			 100.00% (4/4)
+github.com/davecgh/go-spew/spew/format.go	 newFormatter			 100.00% (3/3)
+github.com/davecgh/go-spew/spew/dump.go		 Sdump				 100.00% (3/3)
+github.com/davecgh/go-spew/spew/common.go	 printBool			 100.00% (3/3)
+github.com/davecgh/go-spew/spew/common.go	 sortValues			 100.00% (3/3)
+github.com/davecgh/go-spew/spew/config.go	 ConfigState.Sdump		 100.00% (3/3)
+github.com/davecgh/go-spew/spew/dump.go		 dumpState.unpackValue		 100.00% (3/3)
+github.com/davecgh/go-spew/spew/spew.go		 Printf				 100.00% (1/1)
+github.com/davecgh/go-spew/spew/spew.go		 Println			 100.00% (1/1)
+github.com/davecgh/go-spew/spew/spew.go		 Sprint				 100.00% (1/1)
+github.com/davecgh/go-spew/spew/spew.go		 Sprintf			 100.00% (1/1)
+github.com/davecgh/go-spew/spew/spew.go		 Sprintln			 100.00% (1/1)
+github.com/davecgh/go-spew/spew/common.go	 printFloat			 100.00% (1/1)
+github.com/davecgh/go-spew/spew/config.go	 NewDefaultConfig		 100.00% (1/1)
+github.com/davecgh/go-spew/spew/common.go	 printInt			 100.00% (1/1)
+github.com/davecgh/go-spew/spew/common.go	 printUint			 100.00% (1/1)
+github.com/davecgh/go-spew/spew/common.go	 valuesSorter.Len		 100.00% (1/1)
+github.com/davecgh/go-spew/spew/common.go	 valuesSorter.Swap		 100.00% (1/1)
+github.com/davecgh/go-spew/spew/config.go	 ConfigState.Errorf		 100.00% (1/1)
+github.com/davecgh/go-spew/spew/config.go	 ConfigState.Fprint		 100.00% (1/1)
+github.com/davecgh/go-spew/spew/config.go	 ConfigState.Fprintf		 100.00% (1/1)
+github.com/davecgh/go-spew/spew/config.go	 ConfigState.Fprintln		 100.00% (1/1)
+github.com/davecgh/go-spew/spew/config.go	 ConfigState.Print		 100.00% (1/1)
+github.com/davecgh/go-spew/spew/config.go	 ConfigState.Printf		 100.00% (1/1)
+github.com/davecgh/go-spew/spew/config.go	 ConfigState.Println		 100.00% (1/1)
+github.com/davecgh/go-spew/spew/config.go	 ConfigState.Sprint		 100.00% (1/1)
+github.com/davecgh/go-spew/spew/config.go	 ConfigState.Sprintf		 100.00% (1/1)
+github.com/davecgh/go-spew/spew/config.go	 ConfigState.Sprintln		 100.00% (1/1)
+github.com/davecgh/go-spew/spew/config.go	 ConfigState.NewFormatter	 100.00% (1/1)
+github.com/davecgh/go-spew/spew/config.go	 ConfigState.Fdump		 100.00% (1/1)
+github.com/davecgh/go-spew/spew/config.go	 ConfigState.Dump		 100.00% (1/1)
+github.com/davecgh/go-spew/spew/dump.go		 Fdump				 100.00% (1/1)
+github.com/davecgh/go-spew/spew/dump.go		 Dump				 100.00% (1/1)
+github.com/davecgh/go-spew/spew/spew.go		 Fprintln			 100.00% (1/1)
+github.com/davecgh/go-spew/spew/format.go	 NewFormatter			 100.00% (1/1)
+github.com/davecgh/go-spew/spew/spew.go		 Errorf				 100.00% (1/1)
+github.com/davecgh/go-spew/spew/spew.go		 Fprint				 100.00% (1/1)
+github.com/davecgh/go-spew/spew/spew.go		 Fprintf			 100.00% (1/1)
+github.com/davecgh/go-spew/spew/spew.go		 Print				 100.00% (1/1)
+github.com/davecgh/go-spew/spew			 ------------------------------- 100.00% (505/505)
+

vendor/github.com/pmezard/go-difflib/.travis.yml

@@ -0,0 +1,5 @@
+language: go
+go:
+  - 1.5
+  - tip
+

vendor/github.com/pmezard/go-difflib/LICENSE

@@ -0,0 +1,27 @@
+Copyright (c) 2013, Patrick Mezard
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+    Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+    The names of its contributors may not be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/pmezard/go-difflib/README.md

@@ -0,0 +1,50 @@
+go-difflib
+==========
+
+[![Build Status](https://travis-ci.org/pmezard/go-difflib.png?branch=master)](https://travis-ci.org/pmezard/go-difflib)
+[![GoDoc](https://godoc.org/github.com/pmezard/go-difflib/difflib?status.svg)](https://godoc.org/github.com/pmezard/go-difflib/difflib)
+
+Go-difflib is a partial port of python 3 difflib package. Its main goal
+was to make unified and context diff available in pure Go, mostly for
+testing purposes.
+
+The following class and functions (and related tests) have be ported:
+
+* `SequenceMatcher`
+* `unified_diff()`
+* `context_diff()`
+
+## Installation
+
+```bash
+$ go get github.com/pmezard/go-difflib/difflib
+```
+
+### Quick Start
+
+Diffs are configured with Unified (or ContextDiff) structures, and can
+be output to an io.Writer or returned as a string.
+
+```Go
+diff := UnifiedDiff{
+    A:        difflib.SplitLines("foo\nbar\n"),
+    B:        difflib.SplitLines("foo\nbaz\n"),
+    FromFile: "Original",
+    ToFile:   "Current",
+    Context:  3,
+}
+text, _ := GetUnifiedDiffString(diff)
+fmt.Printf(text)
+```
+
+would output:
+
+```
+--- Original
++++ Current
+@@ -1,3 +1,3 @@
+ foo
+-bar
++baz
+```
+

vendor/github.com/pmezard/go-difflib/difflib/difflib.go

@@ -0,0 +1,772 @@
+// Package difflib is a partial port of Python difflib module.
+//
+// It provides tools to compare sequences of strings and generate textual diffs.
+//
+// The following class and functions have been ported:
+//
+// - SequenceMatcher
+//
+// - unified_diff
+//
+// - context_diff
+//
+// Getting unified diffs was the main goal of the port. Keep in mind this code
+// is mostly suitable to output text differences in a human friendly way, there
+// are no guarantees generated diffs are consumable by patch(1).
+package difflib
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io"
+	"strings"
+)
+
+func min(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}
+
+func max(a, b int) int {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+func calculateRatio(matches, length int) float64 {
+	if length > 0 {
+		return 2.0 * float64(matches) / float64(length)
+	}
+	return 1.0
+}
+
+type Match struct {
+	A    int
+	B    int
+	Size int
+}
+
+type OpCode struct {
+	Tag byte
+	I1  int
+	I2  int
+	J1  int
+	J2  int
+}
+
+// SequenceMatcher compares sequence of strings. The basic
+// algorithm predates, and is a little fancier than, an algorithm
+// published in the late 1980's by Ratcliff and Obershelp under the
+// hyperbolic name "gestalt pattern matching".  The basic idea is to find
+// the longest contiguous matching subsequence that contains no "junk"
+// elements (R-O doesn't address junk).  The same idea is then applied
+// recursively to the pieces of the sequences to the left and to the right
+// of the matching subsequence.  This does not yield minimal edit
+// sequences, but does tend to yield matches that "look right" to people.
+//
+// SequenceMatcher tries to compute a "human-friendly diff" between two
+// sequences.  Unlike e.g. UNIX(tm) diff, the fundamental notion is the
+// longest *contiguous* & junk-free matching subsequence.  That's what
+// catches peoples' eyes.  The Windows(tm) windiff has another interesting
+// notion, pairing up elements that appear uniquely in each sequence.
+// That, and the method here, appear to yield more intuitive difference
+// reports than does diff.  This method appears to be the least vulnerable
+// to synching up on blocks of "junk lines", though (like blank lines in
+// ordinary text files, or maybe "<P>" lines in HTML files).  That may be
+// because this is the only method of the 3 that has a *concept* of
+// "junk" <wink>.
+//
+// Timing:  Basic R-O is cubic time worst case and quadratic time expected
+// case.  SequenceMatcher is quadratic time for the worst case and has
+// expected-case behavior dependent in a complicated way on how many
+// elements the sequences have in common; best case time is linear.
+type SequenceMatcher struct {
+	a              []string
+	b              []string
+	b2j            map[string][]int
+	IsJunk         func(string) bool
+	autoJunk       bool
+	bJunk          map[string]struct{}
+	matchingBlocks []Match
+	fullBCount     map[string]int
+	bPopular       map[string]struct{}
+	opCodes        []OpCode
+}
+
+func NewMatcher(a, b []string) *SequenceMatcher {
+	m := SequenceMatcher{autoJunk: true}
+	m.SetSeqs(a, b)
+	return &m
+}
+
+func NewMatcherWithJunk(a, b []string, autoJunk bool,
+	isJunk func(string) bool) *SequenceMatcher {
+
+	m := SequenceMatcher{IsJunk: isJunk, autoJunk: autoJunk}
+	m.SetSeqs(a, b)
+	return &m
+}
+
+// Set two sequences to be compared.
+func (m *SequenceMatcher) SetSeqs(a, b []string) {
+	m.SetSeq1(a)
+	m.SetSeq2(b)
+}
+
+// Set the first sequence to be compared. The second sequence to be compared is
+// not changed.
+//
+// SequenceMatcher computes and caches detailed information about the second
+// sequence, so if you want to compare one sequence S against many sequences,
+// use .SetSeq2(s) once and call .SetSeq1(x) repeatedly for each of the other
+// sequences.
+//
+// See also SetSeqs() and SetSeq2().
+func (m *SequenceMatcher) SetSeq1(a []string) {
+	if &a == &m.a {
+		return
+	}
+	m.a = a
+	m.matchingBlocks = nil
+	m.opCodes = nil
+}
+
+// Set the second sequence to be compared. The first sequence to be compared is
+// not changed.
+func (m *SequenceMatcher) SetSeq2(b []string) {
+	if &b == &m.b {
+		return
+	}
+	m.b = b
+	m.matchingBlocks = nil
+	m.opCodes = nil
+	m.fullBCount = nil
+	m.chainB()
+}
+
+func (m *SequenceMatcher) chainB() {
+	// Populate line -> index mapping
+	b2j := map[string][]int{}
+	for i, s := range m.b {
+		indices := b2j[s]
+		indices = append(indices, i)
+		b2j[s] = indices
+	}
+
+	// Purge junk elements
+	m.bJunk = map[string]struct{}{}
+	if m.IsJunk != nil {
+		junk := m.bJunk
+		for s, _ := range b2j {
+			if m.IsJunk(s) {
+				junk[s] = struct{}{}
+			}
+		}
+		for s, _ := range junk {
+			delete(b2j, s)
+		}
+	}
+
+	// Purge remaining popular elements
+	popular := map[string]struct{}{}
+	n := len(m.b)
+	if m.autoJunk && n >= 200 {
+		ntest := n/100 + 1
+		for s, indices := range b2j {
+			if len(indices) > ntest {
+				popular[s] = struct{}{}
+			}
+		}
+		for s, _ := range popular {
+			delete(b2j, s)
+		}
+	}
+	m.bPopular = popular
+	m.b2j = b2j
+}
+
+func (m *SequenceMatcher) isBJunk(s string) bool {
+	_, ok := m.bJunk[s]
+	return ok
+}
+
+// Find longest matching block in a[alo:ahi] and b[blo:bhi].
+//
+// If IsJunk is not defined:
+//
+// Return (i,j,k) such that a[i:i+k] is equal to b[j:j+k], where
+//     alo <= i <= i+k <= ahi
+//     blo <= j <= j+k <= bhi
+// and for all (i',j',k') meeting those conditions,
+//     k >= k'
+//     i <= i'
+//     and if i == i', j <= j'
+//
+// In other words, of all maximal matching blocks, return one that
+// starts earliest in a, and of all those maximal matching blocks that
+// start earliest in a, return the one that starts earliest in b.
+//
+// If IsJunk is defined, first the longest matching block is
+// determined as above, but with the additional restriction that no
+// junk element appears in the block.  Then that block is extended as
+// far as possible by matching (only) junk elements on both sides.  So
+// the resulting block never matches on junk except as identical junk
+// happens to be adjacent to an "interesting" match.
+//
+// If no blocks match, return (alo, blo, 0).
+func (m *SequenceMatcher) findLongestMatch(alo, ahi, blo, bhi int) Match {
+	// CAUTION:  stripping common prefix or suffix would be incorrect.
+	// E.g.,
+	//    ab
+	//    acab
+	// Longest matching block is "ab", but if common prefix is
+	// stripped, it's "a" (tied with "b").  UNIX(tm) diff does so
+	// strip, so ends up claiming that ab is changed to acab by
+	// inserting "ca" in the middle.  That's minimal but unintuitive:
+	// "it's obvious" that someone inserted "ac" at the front.
+	// Windiff ends up at the same place as diff, but by pairing up
+	// the unique 'b's and then matching the first two 'a's.
+	besti, bestj, bestsize := alo, blo, 0
+
+	// find longest junk-free match
+	// during an iteration of the loop, j2len[j] = length of longest
+	// junk-free match ending with a[i-1] and b[j]
+	j2len := map[int]int{}
+	for i := alo; i != ahi; i++ {
+		// look at all instances of a[i] in b; note that because
+		// b2j has no junk keys, the loop is skipped if a[i] is junk
+		newj2len := map[int]int{}
+		for _, j := range m.b2j[m.a[i]] {
+			// a[i] matches b[j]
+			if j < blo {
+				continue
+			}
+			if j >= bhi {
+				break
+			}
+			k := j2len[j-1] + 1
+			newj2len[j] = k
+			if k > bestsize {
+				besti, bestj, bestsize = i-k+1, j-k+1, k
+			}
+		}
+		j2len = newj2len
+	}
+
+	// Extend the best by non-junk elements on each end.  In particular,
+	// "popular" non-junk elements aren't in b2j, which greatly speeds
+	// the inner loop above, but also means "the best" match so far
+	// doesn't contain any junk *or* popular non-junk elements.
+	for besti > alo && bestj > blo && !m.isBJunk(m.b[bestj-1]) &&
+		m.a[besti-1] == m.b[bestj-1] {
+		besti, bestj, bestsize = besti-1, bestj-1, bestsize+1
+	}
+	for besti+bestsize < ahi && bestj+bestsize < bhi &&
+		!m.isBJunk(m.b[bestj+bestsize]) &&
+		m.a[besti+bestsize] == m.b[bestj+bestsize] {
+		bestsize += 1
+	}
+
+	// Now that we have a wholly interesting match (albeit possibly
+	// empty!), we may as well suck up the matching junk on each
+	// side of it too.  Can't think of a good reason not to, and it
+	// saves post-processing the (possibly considerable) expense of
+	// figuring out what to do with it.  In the case of an empty
+	// interesting match, this is clearly the right thing to do,
+	// because no other kind of match is possible in the regions.
+	for besti > alo && bestj > blo && m.isBJunk(m.b[bestj-1]) &&
+		m.a[besti-1] == m.b[bestj-1] {
+		besti, bestj, bestsize = besti-1, bestj-1, bestsize+1
+	}
+	for besti+bestsize < ahi && bestj+bestsize < bhi &&
+		m.isBJunk(m.b[bestj+bestsize]) &&
+		m.a[besti+bestsize] == m.b[bestj+bestsize] {
+		bestsize += 1
+	}
+
+	return Match{A: besti, B: bestj, Size: bestsize}
+}
+
+// Return list of triples describing matching subsequences.
+//
+// Each triple is of the form (i, j, n), and means that
+// a[i:i+n] == b[j:j+n].  The triples are monotonically increasing in
+// i and in j. It's also guaranteed that if (i, j, n) and (i', j', n') are
+// adjacent triples in the list, and the second is not the last triple in the
+// list, then i+n != i' or j+n != j'. IOW, adjacent triples never describe
+// adjacent equal blocks.
+//
+// The last triple is a dummy, (len(a), len(b), 0), and is the only
+// triple with n==0.
+func (m *SequenceMatcher) GetMatchingBlocks() []Match {
+	if m.matchingBlocks != nil {
+		return m.matchingBlocks
+	}
+
+	var matchBlocks func(alo, ahi, blo, bhi int, matched []Match) []Match
+	matchBlocks = func(alo, ahi, blo, bhi int, matched []Match) []Match {
+		match := m.findLongestMatch(alo, ahi, blo, bhi)
+		i, j, k := match.A, match.B, match.Size
+		if match.Size > 0 {
+			if alo < i && blo < j {
+				matched = matchBlocks(alo, i, blo, j, matched)
+			}
+			matched = append(matched, match)
+			if i+k < ahi && j+k < bhi {
+				matched = matchBlocks(i+k, ahi, j+k, bhi, matched)
+			}
+		}
+		return matched
+	}
+	matched := matchBlocks(0, len(m.a), 0, len(m.b), nil)
+
+	// It's possible that we have adjacent equal blocks in the
+	// matching_blocks list now.
+	nonAdjacent := []Match{}
+	i1, j1, k1 := 0, 0, 0
+	for _, b := range matched {
+		// Is this block adjacent to i1, j1, k1?
+		i2, j2, k2 := b.A, b.B, b.Size
+		if i1+k1 == i2 && j1+k1 == j2 {
+			// Yes, so collapse them -- this just increases the length of
+			// the first block by the length of the second, and the first
+			// block so lengthened remains the block to compare against.
+			k1 += k2
+		} else {
+			// Not adjacent.  Remember the first block (k1==0 means it's
+			// the dummy we started with), and make the second block the
+			// new block to compare against.
+			if k1 > 0 {
+				nonAdjacent = append(nonAdjacent, Match{i1, j1, k1})
+			}
+			i1, j1, k1 = i2, j2, k2
+		}
+	}
+	if k1 > 0 {
+		nonAdjacent = append(nonAdjacent, Match{i1, j1, k1})
+	}
+
+	nonAdjacent = append(nonAdjacent, Match{len(m.a), len(m.b), 0})
+	m.matchingBlocks = nonAdjacent
+	return m.matchingBlocks
+}
+
+// Return list of 5-tuples describing how to turn a into b.
+//
+// Each tuple is of the form (tag, i1, i2, j1, j2).  The first tuple
+// has i1 == j1 == 0, and remaining tuples have i1 == the i2 from the
+// tuple preceding it, and likewise for j1 == the previous j2.
+//
+// The tags are characters, with these meanings:
+//
+// 'r' (replace):  a[i1:i2] should be replaced by b[j1:j2]
+//
+// 'd' (delete):   a[i1:i2] should be deleted, j1==j2 in this case.
+//
+// 'i' (insert):   b[j1:j2] should be inserted at a[i1:i1], i1==i2 in this case.
+//
+// 'e' (equal):    a[i1:i2] == b[j1:j2]
+func (m *SequenceMatcher) GetOpCodes() []OpCode {
+	if m.opCodes != nil {
+		return m.opCodes
+	}
+	i, j := 0, 0
+	matching := m.GetMatchingBlocks()
+	opCodes := make([]OpCode, 0, len(matching))
+	for _, m := range matching {
+		//  invariant:  we've pumped out correct diffs to change
+		//  a[:i] into b[:j], and the next matching block is
+		//  a[ai:ai+size] == b[bj:bj+size]. So we need to pump
+		//  out a diff to change a[i:ai] into b[j:bj], pump out
+		//  the matching block, and move (i,j) beyond the match
+		ai, bj, size := m.A, m.B, m.Size
+		tag := byte(0)
+		if i < ai && j < bj {
+			tag = 'r'
+		} else if i < ai {
+			tag = 'd'
+		} else if j < bj {
+			tag = 'i'
+		}
+		if tag > 0 {
+			opCodes = append(opCodes, OpCode{tag, i, ai, j, bj})
+		}
+		i, j = ai+size, bj+size
+		// the list of matching blocks is terminated by a
+		// sentinel with size 0
+		if size > 0 {
+			opCodes = append(opCodes, OpCode{'e', ai, i, bj, j})
+		}
+	}
+	m.opCodes = opCodes
+	return m.opCodes
+}
+
+// Isolate change clusters by eliminating ranges with no changes.
+//
+// Return a generator of groups with up to n lines of context.
+// Each group is in the same format as returned by GetOpCodes().
+func (m *SequenceMatcher) GetGroupedOpCodes(n int) [][]OpCode {
+	if n < 0 {
+		n = 3
+	}
+	codes := m.GetOpCodes()
+	if len(codes) == 0 {
+		codes = []OpCode{OpCode{'e', 0, 1, 0, 1}}
+	}
+	// Fixup leading and trailing groups if they show no changes.
+	if codes[0].Tag == 'e' {
+		c := codes[0]
+		i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
+		codes[0] = OpCode{c.Tag, max(i1, i2-n), i2, max(j1, j2-n), j2}
+	}
+	if codes[len(codes)-1].Tag == 'e' {
+		c := codes[len(codes)-1]
+		i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
+		codes[len(codes)-1] = OpCode{c.Tag, i1, min(i2, i1+n), j1, min(j2, j1+n)}
+	}
+	nn := n + n
+	groups := [][]OpCode{}
+	group := []OpCode{}
+	for _, c := range codes {
+		i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
+		// End the current group and start a new one whenever
+		// there is a large range with no changes.
+		if c.Tag == 'e' && i2-i1 > nn {
+			group = append(group, OpCode{c.Tag, i1, min(i2, i1+n),
+				j1, min(j2, j1+n)})
+			groups = append(groups, group)
+			group = []OpCode{}
+			i1, j1 = max(i1, i2-n), max(j1, j2-n)
+		}
+		group = append(group, OpCode{c.Tag, i1, i2, j1, j2})
+	}
+	if len(group) > 0 && !(len(group) == 1 && group[0].Tag == 'e') {
+		groups = append(groups, group)
+	}
+	return groups
+}
+
+// Return a measure of the sequences' similarity (float in [0,1]).
+//
+// Where T is the total number of elements in both sequences, and
+// M is the number of matches, this is 2.0*M / T.
+// Note that this is 1 if the sequences are identical, and 0 if
+// they have nothing in common.
+//
+// .Ratio() is expensive to compute if you haven't already computed
+// .GetMatchingBlocks() or .GetOpCodes(), in which case you may
+// want to try .QuickRatio() or .RealQuickRation() first to get an
+// upper bound.
+func (m *SequenceMatcher) Ratio() float64 {
+	matches := 0
+	for _, m := range m.GetMatchingBlocks() {
+		matches += m.Size
+	}
+	return calculateRatio(matches, len(m.a)+len(m.b))
+}
+
+// Return an upper bound on ratio() relatively quickly.
+//
+// This isn't defined beyond that it is an upper bound on .Ratio(), and
+// is faster to compute.
+func (m *SequenceMatcher) QuickRatio() float64 {
+	// viewing a and b as multisets, set matches to the cardinality
+	// of their intersection; this counts the number of matches
+	// without regard to order, so is clearly an upper bound
+	if m.fullBCount == nil {
+		m.fullBCount = map[string]int{}
+		for _, s := range m.b {
+			m.fullBCount[s] = m.fullBCount[s] + 1
+		}
+	}
+
+	// avail[x] is the number of times x appears in 'b' less the
+	// number of times we've seen it in 'a' so far ... kinda
+	avail := map[string]int{}
+	matches := 0
+	for _, s := range m.a {
+		n, ok := avail[s]
+		if !ok {
+			n = m.fullBCount[s]
+		}
+		avail[s] = n - 1
+		if n > 0 {
+			matches += 1
+		}
+	}
+	return calculateRatio(matches, len(m.a)+len(m.b))
+}
+
+// Return an upper bound on ratio() very quickly.
+//
+// This isn't defined beyond that it is an upper bound on .Ratio(), and
+// is faster to compute than either .Ratio() or .QuickRatio().
+func (m *SequenceMatcher) RealQuickRatio() float64 {
+	la, lb := len(m.a), len(m.b)
+	return calculateRatio(min(la, lb), la+lb)
+}
+
+// Convert range to the "ed" format
+func formatRangeUnified(start, stop int) string {
+	// Per the diff spec at http://www.unix.org/single_unix_specification/
+	beginning := start + 1 // lines start numbering with one
+	length := stop - start
+	if length == 1 {
+		return fmt.Sprintf("%d", beginning)
+	}
+	if length == 0 {
+		beginning -= 1 // empty ranges begin at line just before the range
+	}
+	return fmt.Sprintf("%d,%d", beginning, length)
+}
+
+// Unified diff parameters
+type UnifiedDiff struct {
+	A        []string // First sequence lines
+	FromFile string   // First file name
+	FromDate string   // First file time
+	B        []string // Second sequence lines
+	ToFile   string   // Second file name
+	ToDate   string   // Second file time
+	Eol      string   // Headers end of line, defaults to LF
+	Context  int      // Number of context lines
+}
+
+// Compare two sequences of lines; generate the delta as a unified diff.
+//
+// Unified diffs are a compact way of showing line changes and a few
+// lines of context.  The number of context lines is set by 'n' which
+// defaults to three.
+//
+// By default, the diff control lines (those with ---, +++, or @@) are
+// created with a trailing newline.  This is helpful so that inputs
+// created from file.readlines() result in diffs that are suitable for
+// file.writelines() since both the inputs and outputs have trailing
+// newlines.
+//
+// For inputs that do not have trailing newlines, set the lineterm
+// argument to "" so that the output will be uniformly newline free.
+//
+// The unidiff format normally has a header for filenames and modification
+// times.  Any or all of these may be specified using strings for
+// 'fromfile', 'tofile', 'fromfiledate', and 'tofiledate'.
+// The modification times are normally expressed in the ISO 8601 format.
+func WriteUnifiedDiff(writer io.Writer, diff UnifiedDiff) error {
+	buf := bufio.NewWriter(writer)
+	defer buf.Flush()
+	wf := func(format string, args ...interface{}) error {
+		_, err := buf.WriteString(fmt.Sprintf(format, args...))
+		return err
+	}
+	ws := func(s string) error {
+		_, err := buf.WriteString(s)
+		return err
+	}
+
+	if len(diff.Eol) == 0 {
+		diff.Eol = "\n"
+	}
+
+	started := false
+	m := NewMatcher(diff.A, diff.B)
+	for _, g := range m.GetGroupedOpCodes(diff.Context) {
+		if !started {
+			started = true
+			fromDate := ""
+			if len(diff.FromDate) > 0 {
+				fromDate = "\t" + diff.FromDate
+			}
+			toDate := ""
+			if len(diff.ToDate) > 0 {
+				toDate = "\t" + diff.ToDate
+			}
+			if diff.FromFile != "" || diff.ToFile != "" {
+				err := wf("--- %s%s%s", diff.FromFile, fromDate, diff.Eol)
+				if err != nil {
+					return err
+				}
+				err = wf("+++ %s%s%s", diff.ToFile, toDate, diff.Eol)
+				if err != nil {
+					return err
+				}
+			}
+		}
+		first, last := g[0], g[len(g)-1]
+		range1 := formatRangeUnified(first.I1, last.I2)
+		range2 := formatRangeUnified(first.J1, last.J2)
+		if err := wf("@@ -%s +%s @@%s", range1, range2, diff.Eol); err != nil {
+			return err
+		}
+		for _, c := range g {
+			i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
+			if c.Tag == 'e' {
+				for _, line := range diff.A[i1:i2] {
+					if err := ws(" " + line); err != nil {
+						return err
+					}
+				}
+				continue
+			}
+			if c.Tag == 'r' || c.Tag == 'd' {
+				for _, line := range diff.A[i1:i2] {
+					if err := ws("-" + line); err != nil {
+						return err
+					}
+				}
+			}
+			if c.Tag == 'r' || c.Tag == 'i' {
+				for _, line := range diff.B[j1:j2] {
+					if err := ws("+" + line); err != nil {
+						return err
+					}
+				}
+			}
+		}
+	}
+	return nil
+}
+
+// Like WriteUnifiedDiff but returns the diff a string.
+func GetUnifiedDiffString(diff UnifiedDiff) (string, error) {
+	w := &bytes.Buffer{}
+	err := WriteUnifiedDiff(w, diff)
+	return string(w.Bytes()), err
+}
+
+// Convert range to the "ed" format.
+func formatRangeContext(start, stop int) string {
+	// Per the diff spec at http://www.unix.org/single_unix_specification/
+	beginning := start + 1 // lines start numbering with one
+	length := stop - start
+	if length == 0 {
+		beginning -= 1 // empty ranges begin at line just before the range
+	}
+	if length <= 1 {
+		return fmt.Sprintf("%d", beginning)
+	}
+	return fmt.Sprintf("%d,%d", beginning, beginning+length-1)
+}
+
+type ContextDiff UnifiedDiff
+
+// Compare two sequences of lines; generate the delta as a context diff.
+//
+// Context diffs are a compact way of showing line changes and a few
+// lines of context. The number of context lines is set by diff.Context
+// which defaults to three.
+//
+// By default, the diff control lines (those with *** or ---) are
+// created with a trailing newline.
+//
+// For inputs that do not have trailing newlines, set the diff.Eol
+// argument to "" so that the output will be uniformly newline free.
+//
+// The context diff format normally has a header for filenames and
+// modification times.  Any or all of these may be specified using
+// strings for diff.FromFile, diff.ToFile, diff.FromDate, diff.ToDate.
+// The modification times are normally expressed in the ISO 8601 format.
+// If not specified, the strings default to blanks.
+func WriteContextDiff(writer io.Writer, diff ContextDiff) error {
+	buf := bufio.NewWriter(writer)
+	defer buf.Flush()
+	var diffErr error
+	wf := func(format string, args ...interface{}) {
+		_, err := buf.WriteString(fmt.Sprintf(format, args...))
+		if diffErr == nil && err != nil {
+			diffErr = err
+		}
+	}
+	ws := func(s string) {
+		_, err := buf.WriteString(s)
+		if diffErr == nil && err != nil {
+			diffErr = err
+		}
+	}
+
+	if len(diff.Eol) == 0 {
+		diff.Eol = "\n"
+	}
+
+	prefix := map[byte]string{
+		'i': "+ ",
+		'd': "- ",
+		'r': "! ",
+		'e': "  ",
+	}
+
+	started := false
+	m := NewMatcher(diff.A, diff.B)
+	for _, g := range m.GetGroupedOpCodes(diff.Context) {
+		if !started {
+			started = true
+			fromDate := ""
+			if len(diff.FromDate) > 0 {
+				fromDate = "\t" + diff.FromDate
+			}
+			toDate := ""
+			if len(diff.ToDate) > 0 {
+				toDate = "\t" + diff.ToDate
+			}
+			if diff.FromFile != "" || diff.ToFile != "" {
+				wf("*** %s%s%s", diff.FromFile, fromDate, diff.Eol)
+				wf("--- %s%s%s", diff.ToFile, toDate, diff.Eol)
+			}
+		}
+
+		first, last := g[0], g[len(g)-1]
+		ws("***************" + diff.Eol)
+
+		range1 := formatRangeContext(first.I1, last.I2)
+		wf("*** %s ****%s", range1, diff.Eol)
+		for _, c := range g {
+			if c.Tag == 'r' || c.Tag == 'd' {
+				for _, cc := range g {
+					if cc.Tag == 'i' {
+						continue
+					}
+					for _, line := range diff.A[cc.I1:cc.I2] {
+						ws(prefix[cc.Tag] + line)
+					}
+				}
+				break
+			}
+		}
+
+		range2 := formatRangeContext(first.J1, last.J2)
+		wf("--- %s ----%s", range2, diff.Eol)
+		for _, c := range g {
+			if c.Tag == 'r' || c.Tag == 'i' {
+				for _, cc := range g {
+					if cc.Tag == 'd' {
+						continue
+					}
+					for _, line := range diff.B[cc.J1:cc.J2] {
+						ws(prefix[cc.Tag] + line)
+					}
+				}
+				break
+			}
+		}
+	}
+	return diffErr
+}
+
+// Like WriteContextDiff but returns the diff a string.
+func GetContextDiffString(diff ContextDiff) (string, error) {
+	w := &bytes.Buffer{}
+	err := WriteContextDiff(w, diff)
+	return string(w.Bytes()), err
+}
+
+// Split a string on "\n" while preserving them. The output can be used
+// as input for UnifiedDiff and ContextDiff structures.
+func SplitLines(s string) []string {
+	lines := strings.SplitAfter(s, "\n")
+	lines[len(lines)-1] += "\n"
+	return lines
+}

vendor/github.com/pmezard/go-difflib/difflib/difflib_test.go

@@ -0,0 +1,426 @@
+package difflib
+
+import (
+	"bytes"
+	"fmt"
+	"math"
+	"reflect"
+	"strings"
+	"testing"
+)
+
+func assertAlmostEqual(t *testing.T, a, b float64, places int) {
+	if math.Abs(a-b) > math.Pow10(-places) {
+		t.Errorf("%.7f != %.7f", a, b)
+	}
+}
+
+func assertEqual(t *testing.T, a, b interface{}) {
+	if !reflect.DeepEqual(a, b) {
+		t.Errorf("%v != %v", a, b)
+	}
+}
+
+func splitChars(s string) []string {
+	chars := make([]string, 0, len(s))
+	// Assume ASCII inputs
+	for i := 0; i != len(s); i++ {
+		chars = append(chars, string(s[i]))
+	}
+	return chars
+}
+
+func TestSequenceMatcherRatio(t *testing.T) {
+	s := NewMatcher(splitChars("abcd"), splitChars("bcde"))
+	assertEqual(t, s.Ratio(), 0.75)
+	assertEqual(t, s.QuickRatio(), 0.75)
+	assertEqual(t, s.RealQuickRatio(), 1.0)
+}
+
+func TestGetOptCodes(t *testing.T) {
+	a := "qabxcd"
+	b := "abycdf"
+	s := NewMatcher(splitChars(a), splitChars(b))
+	w := &bytes.Buffer{}
+	for _, op := range s.GetOpCodes() {
+		fmt.Fprintf(w, "%s a[%d:%d], (%s) b[%d:%d] (%s)\n", string(op.Tag),
+			op.I1, op.I2, a[op.I1:op.I2], op.J1, op.J2, b[op.J1:op.J2])
+	}
+	result := string(w.Bytes())
+	expected := `d a[0:1], (q) b[0:0] ()
+e a[1:3], (ab) b[0:2] (ab)
+r a[3:4], (x) b[2:3] (y)
+e a[4:6], (cd) b[3:5] (cd)
+i a[6:6], () b[5:6] (f)
+`
+	if expected != result {
+		t.Errorf("unexpected op codes: \n%s", result)
+	}
+}
+
+func TestGroupedOpCodes(t *testing.T) {
+	a := []string{}
+	for i := 0; i != 39; i++ {
+		a = append(a, fmt.Sprintf("%02d", i))
+	}
+	b := []string{}
+	b = append(b, a[:8]...)
+	b = append(b, " i")
+	b = append(b, a[8:19]...)
+	b = append(b, " x")
+	b = append(b, a[20:22]...)
+	b = append(b, a[27:34]...)
+	b = append(b, " y")
+	b = append(b, a[35:]...)
+	s := NewMatcher(a, b)
+	w := &bytes.Buffer{}
+	for _, g := range s.GetGroupedOpCodes(-1) {
+		fmt.Fprintf(w, "group\n")
+		for _, op := range g {
+			fmt.Fprintf(w, "  %s, %d, %d, %d, %d\n", string(op.Tag),
+				op.I1, op.I2, op.J1, op.J2)
+		}
+	}
+	result := string(w.Bytes())
+	expected := `group
+  e, 5, 8, 5, 8
+  i, 8, 8, 8, 9
+  e, 8, 11, 9, 12
+group
+  e, 16, 19, 17, 20
+  r, 19, 20, 20, 21
+  e, 20, 22, 21, 23
+  d, 22, 27, 23, 23
+  e, 27, 30, 23, 26
+group
+  e, 31, 34, 27, 30
+  r, 34, 35, 30, 31
+  e, 35, 38, 31, 34
+`
+	if expected != result {
+		t.Errorf("unexpected op codes: \n%s", result)
+	}
+}
+
+func ExampleGetUnifiedDiffCode() {
+	a := `one
+two
+three
+four
+fmt.Printf("%s,%T",a,b)`
+	b := `zero
+one
+three
+four`
+	diff := UnifiedDiff{
+		A:        SplitLines(a),
+		B:        SplitLines(b),
+		FromFile: "Original",
+		FromDate: "2005-01-26 23:30:50",
+		ToFile:   "Current",
+		ToDate:   "2010-04-02 10:20:52",
+		Context:  3,
+	}
+	result, _ := GetUnifiedDiffString(diff)
+	fmt.Println(strings.Replace(result, "\t", " ", -1))
+	// Output:
+	// --- Original 2005-01-26 23:30:50
+	// +++ Current 2010-04-02 10:20:52
+	// @@ -1,5 +1,4 @@
+	// +zero
+	//  one
+	// -two
+	//  three
+	//  four
+	// -fmt.Printf("%s,%T",a,b)
+}
+
+func ExampleGetContextDiffCode() {
+	a := `one
+two
+three
+four
+fmt.Printf("%s,%T",a,b)`
+	b := `zero
+one
+tree
+four`
+	diff := ContextDiff{
+		A:        SplitLines(a),
+		B:        SplitLines(b),
+		FromFile: "Original",
+		ToFile:   "Current",
+		Context:  3,
+		Eol:      "\n",
+	}
+	result, _ := GetContextDiffString(diff)
+	fmt.Print(strings.Replace(result, "\t", " ", -1))
+	// Output:
+	// *** Original
+	// --- Current
+	// ***************
+	// *** 1,5 ****
+	//   one
+	// ! two
+	// ! three
+	//   four
+	// - fmt.Printf("%s,%T",a,b)
+	// --- 1,4 ----
+	// + zero
+	//   one
+	// ! tree
+	//   four
+}
+
+func ExampleGetContextDiffString() {
+	a := `one
+two
+three
+four`
+	b := `zero
+one
+tree
+four`
+	diff := ContextDiff{
+		A:        SplitLines(a),
+		B:        SplitLines(b),
+		FromFile: "Original",
+		ToFile:   "Current",
+		Context:  3,
+		Eol:      "\n",
+	}
+	result, _ := GetContextDiffString(diff)
+	fmt.Printf(strings.Replace(result, "\t", " ", -1))
+	// Output:
+	// *** Original
+	// --- Current
+	// ***************
+	// *** 1,4 ****
+	//   one
+	// ! two
+	// ! three
+	//   four
+	// --- 1,4 ----
+	// + zero
+	//   one
+	// ! tree
+	//   four
+}
+
+func rep(s string, count int) string {
+	return strings.Repeat(s, count)
+}
+
+func TestWithAsciiOneInsert(t *testing.T) {
+	sm := NewMatcher(splitChars(rep("b", 100)),
+		splitChars("a"+rep("b", 100)))
+	assertAlmostEqual(t, sm.Ratio(), 0.995, 3)
+	assertEqual(t, sm.GetOpCodes(),
+		[]OpCode{{'i', 0, 0, 0, 1}, {'e', 0, 100, 1, 101}})
+	assertEqual(t, len(sm.bPopular), 0)
+
+	sm = NewMatcher(splitChars(rep("b", 100)),
+		splitChars(rep("b", 50)+"a"+rep("b", 50)))
+	assertAlmostEqual(t, sm.Ratio(), 0.995, 3)
+	assertEqual(t, sm.GetOpCodes(),
+		[]OpCode{{'e', 0, 50, 0, 50}, {'i', 50, 50, 50, 51}, {'e', 50, 100, 51, 101}})
+	assertEqual(t, len(sm.bPopular), 0)
+}
+
+func TestWithAsciiOnDelete(t *testing.T) {
+	sm := NewMatcher(splitChars(rep("a", 40)+"c"+rep("b", 40)),
+		splitChars(rep("a", 40)+rep("b", 40)))
+	assertAlmostEqual(t, sm.Ratio(), 0.994, 3)
+	assertEqual(t, sm.GetOpCodes(),
+		[]OpCode{{'e', 0, 40, 0, 40}, {'d', 40, 41, 40, 40}, {'e', 41, 81, 40, 80}})
+}
+
+func TestWithAsciiBJunk(t *testing.T) {
+	isJunk := func(s string) bool {
+		return s == " "
+	}
+	sm := NewMatcherWithJunk(splitChars(rep("a", 40)+rep("b", 40)),
+		splitChars(rep("a", 44)+rep("b", 40)), true, isJunk)
+	assertEqual(t, sm.bJunk, map[string]struct{}{})
+
+	sm = NewMatcherWithJunk(splitChars(rep("a", 40)+rep("b", 40)),
+		splitChars(rep("a", 44)+rep("b", 40)+rep(" ", 20)), false, isJunk)
+	assertEqual(t, sm.bJunk, map[string]struct{}{" ": struct{}{}})
+
+	isJunk = func(s string) bool {
+		return s == " " || s == "b"
+	}
+	sm = NewMatcherWithJunk(splitChars(rep("a", 40)+rep("b", 40)),
+		splitChars(rep("a", 44)+rep("b", 40)+rep(" ", 20)), false, isJunk)
+	assertEqual(t, sm.bJunk, map[string]struct{}{" ": struct{}{}, "b": struct{}{}})
+}
+
+func TestSFBugsRatioForNullSeqn(t *testing.T) {
+	sm := NewMatcher(nil, nil)
+	assertEqual(t, sm.Ratio(), 1.0)
+	assertEqual(t, sm.QuickRatio(), 1.0)
+	assertEqual(t, sm.RealQuickRatio(), 1.0)
+}
+
+func TestSFBugsComparingEmptyLists(t *testing.T) {
+	groups := NewMatcher(nil, nil).GetGroupedOpCodes(-1)
+	assertEqual(t, len(groups), 0)
+	diff := UnifiedDiff{
+		FromFile: "Original",
+		ToFile:   "Current",
+		Context:  3,
+	}
+	result, err := GetUnifiedDiffString(diff)
+	assertEqual(t, err, nil)
+	assertEqual(t, result, "")
+}
+
+func TestOutputFormatRangeFormatUnified(t *testing.T) {
+	// Per the diff spec at http://www.unix.org/single_unix_specification/
+	//
+	// Each <range> field shall be of the form:
+	//   %1d", <beginning line number>  if the range contains exactly one line,
+	// and:
+	//  "%1d,%1d", <beginning line number>, <number of lines> otherwise.
+	// If a range is empty, its beginning line number shall be the number of
+	// the line just before the range, or 0 if the empty range starts the file.
+	fm := formatRangeUnified
+	assertEqual(t, fm(3, 3), "3,0")
+	assertEqual(t, fm(3, 4), "4")
+	assertEqual(t, fm(3, 5), "4,2")
+	assertEqual(t, fm(3, 6), "4,3")
+	assertEqual(t, fm(0, 0), "0,0")
+}
+
+func TestOutputFormatRangeFormatContext(t *testing.T) {
+	// Per the diff spec at http://www.unix.org/single_unix_specification/
+	//
+	// The range of lines in file1 shall be written in the following format
+	// if the range contains two or more lines:
+	//     "*** %d,%d ****\n", <beginning line number>, <ending line number>
+	// and the following format otherwise:
+	//     "*** %d ****\n", <ending line number>
+	// The ending line number of an empty range shall be the number of the preceding line,
+	// or 0 if the range is at the start of the file.
+	//
+	// Next, the range of lines in file2 shall be written in the following format
+	// if the range contains two or more lines:
+	//     "--- %d,%d ----\n", <beginning line number>, <ending line number>
+	// and the following format otherwise:
+	//     "--- %d ----\n", <ending line number>
+	fm := formatRangeContext
+	assertEqual(t, fm(3, 3), "3")
+	assertEqual(t, fm(3, 4), "4")
+	assertEqual(t, fm(3, 5), "4,5")
+	assertEqual(t, fm(3, 6), "4,6")
+	assertEqual(t, fm(0, 0), "0")
+}
+
+func TestOutputFormatTabDelimiter(t *testing.T) {
+	diff := UnifiedDiff{
+		A:        splitChars("one"),
+		B:        splitChars("two"),
+		FromFile: "Original",
+		FromDate: "2005-01-26 23:30:50",
+		ToFile:   "Current",
+		ToDate:   "2010-04-12 10:20:52",
+		Eol:      "\n",
+	}
+	ud, err := GetUnifiedDiffString(diff)
+	assertEqual(t, err, nil)
+	assertEqual(t, SplitLines(ud)[:2], []string{
+		"--- Original\t2005-01-26 23:30:50\n",
+		"+++ Current\t2010-04-12 10:20:52\n",
+	})
+	cd, err := GetContextDiffString(ContextDiff(diff))
+	assertEqual(t, err, nil)
+	assertEqual(t, SplitLines(cd)[:2], []string{
+		"*** Original\t2005-01-26 23:30:50\n",
+		"--- Current\t2010-04-12 10:20:52\n",
+	})
+}
+
+func TestOutputFormatNoTrailingTabOnEmptyFiledate(t *testing.T) {
+	diff := UnifiedDiff{
+		A:        splitChars("one"),
+		B:        splitChars("two"),
+		FromFile: "Original",
+		ToFile:   "Current",
+		Eol:      "\n",
+	}
+	ud, err := GetUnifiedDiffString(diff)
+	assertEqual(t, err, nil)
+	assertEqual(t, SplitLines(ud)[:2], []string{"--- Original\n", "+++ Current\n"})
+
+	cd, err := GetContextDiffString(ContextDiff(diff))
+	assertEqual(t, err, nil)
+	assertEqual(t, SplitLines(cd)[:2], []string{"*** Original\n", "--- Current\n"})
+}
+
+func TestOmitFilenames(t *testing.T) {
+	diff := UnifiedDiff{
+		A:   SplitLines("o\nn\ne\n"),
+		B:   SplitLines("t\nw\no\n"),
+		Eol: "\n",
+	}
+	ud, err := GetUnifiedDiffString(diff)
+	assertEqual(t, err, nil)
+	assertEqual(t, SplitLines(ud), []string{
+		"@@ -0,0 +1,2 @@\n",
+		"+t\n",
+		"+w\n",
+		"@@ -2,2 +3,0 @@\n",
+		"-n\n",
+		"-e\n",
+		"\n",
+	})
+
+	cd, err := GetContextDiffString(ContextDiff(diff))
+	assertEqual(t, err, nil)
+	assertEqual(t, SplitLines(cd), []string{
+		"***************\n",
+		"*** 0 ****\n",
+		"--- 1,2 ----\n",
+		"+ t\n",
+		"+ w\n",
+		"***************\n",
+		"*** 2,3 ****\n",
+		"- n\n",
+		"- e\n",
+		"--- 3 ----\n",
+		"\n",
+	})
+}
+
+func TestSplitLines(t *testing.T) {
+	allTests := []struct {
+		input string
+		want  []string
+	}{
+		{"foo", []string{"foo\n"}},
+		{"foo\nbar", []string{"foo\n", "bar\n"}},
+		{"foo\nbar\n", []string{"foo\n", "bar\n", "\n"}},
+	}
+	for _, test := range allTests {
+		assertEqual(t, SplitLines(test.input), test.want)
+	}
+}
+
+func benchmarkSplitLines(b *testing.B, count int) {
+	str := strings.Repeat("foo\n", count)
+
+	b.ResetTimer()
+
+	n := 0
+	for i := 0; i < b.N; i++ {
+		n += len(SplitLines(str))
+	}
+}
+
+func BenchmarkSplitLines100(b *testing.B) {
+	benchmarkSplitLines(b, 100)
+}
+
+func BenchmarkSplitLines10000(b *testing.B) {
+	benchmarkSplitLines(b, 10000)
+}

vendor/github.com/stretchr/testify/.gitignore

@@ -0,0 +1,24 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+
+.DS_Store

vendor/github.com/stretchr/testify/.travis.gofmt.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+if [ -n "$(gofmt -l .)" ]; then
+  echo "Go code is not formatted:"
+  gofmt -d .
+  exit 1
+fi

vendor/github.com/stretchr/testify/.travis.gogenerate.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+if [[ "$TRAVIS_GO_VERSION" =~ ^1\.[45](\..*)?$ ]]; then
+  exit 0
+fi
+
+go get github.com/ernesto-jimenez/gogen/imports
+go generate ./...
+if [ -n "$(git diff)" ]; then
+  echo "Go generate had not been run"
+  git diff
+  exit 1
+fi

vendor/github.com/stretchr/testify/.travis.govet.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+cd "$(dirname $0)"
+DIRS=". assert require mock _codegen"
+set -e
+for subdir in $DIRS; do
+  pushd $subdir
+  go vet
+  popd
+done

vendor/github.com/stretchr/testify/.travis.yml

@@ -0,0 +1,15 @@
+language: go
+
+sudo: false
+
+go:
+  - 1.7
+  - 1.8
+  - 1.9
+  - tip
+
+script:
+  - ./.travis.gogenerate.sh
+  - ./.travis.gofmt.sh
+  - ./.travis.govet.sh
+  - go test -v -race $(go list ./... | grep -v vendor)

vendor/github.com/stretchr/testify/Gopkg.lock

@@ -0,0 +1,27 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  name = "github.com/davecgh/go-spew"
+  packages = ["spew"]
+  revision = "346938d642f2ec3594ed81d874461961cd0faa76"
+  version = "v1.1.0"
+
+[[projects]]
+  name = "github.com/pmezard/go-difflib"
+  packages = ["difflib"]
+  revision = "792786c7400a136282c1664665ae0a8db921c6c2"
+  version = "v1.0.0"
+
+[[projects]]
+  name = "github.com/stretchr/objx"
+  packages = ["."]
+  revision = "facf9a85c22f48d2f52f2380e4efce1768749a89"
+  version = "v0.1"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  inputs-digest = "448ddae4702c6aded2555faafd390c537789bb1c483f70b0431e6634f73f2090"
+  solver-name = "gps-cdcl"
+  solver-version = 1

vendor/github.com/stretchr/testify/Gopkg.toml

@@ -0,0 +1,16 @@
+[prune]
+  unused-packages = true
+  non-go = true
+  go-tests = true
+
+[[constraint]]
+  name = "github.com/davecgh/go-spew"
+  version = "~1.1.0"
+
+[[constraint]]
+  name = "github.com/pmezard/go-difflib"
+  version = "~1.0.0"
+
+[[constraint]]
+  name = "github.com/stretchr/objx"
+  version = "~0.1.0"

vendor/github.com/stretchr/testify/LICENSE

@@ -0,0 +1,22 @@
+Copyright (c) 2012 - 2013 Mat Ryer and Tyler Bunnell
+
+Please consider promoting this project if you find it useful.
+
+Permission is hereby granted, free of charge, to any person 
+obtaining a copy of this software and associated documentation 
+files (the "Software"), to deal in the Software without restriction, 
+including without limitation the rights to use, copy, modify, merge, 
+publish, distribute, sublicense, and/or sell copies of the Software, 
+and to permit persons to whom the Software is furnished to do so, 
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT 
+OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE 
+OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

vendor/github.com/stretchr/testify/README.md

@@ -0,0 +1,301 @@
+Testify - Thou Shalt Write Tests
+================================
+
+[![Build Status](https://travis-ci.org/stretchr/testify.svg)](https://travis-ci.org/stretchr/testify) [![Go Report Card](https://goreportcard.com/badge/github.com/stretchr/testify)](https://goreportcard.com/report/github.com/stretchr/testify) [![GoDoc](https://godoc.org/github.com/stretchr/testify?status.svg)](https://godoc.org/github.com/stretchr/testify)
+
+Go code (golang) set of packages that provide many tools for testifying that your code will behave as you intend.
+
+Features include:
+
+  * [Easy assertions](#assert-package)
+  * [Mocking](#mock-package)
+  * [Testing suite interfaces and functions](#suite-package)
+
+Get started:
+
+  * Install testify with [one line of code](#installation), or [update it with another](#staying-up-to-date)
+  * For an introduction to writing test code in Go, see http://golang.org/doc/code.html#Testing
+  * Check out the API Documentation http://godoc.org/github.com/stretchr/testify
+  * To make your testing life easier, check out our other project, [gorc](http://github.com/stretchr/gorc)
+  * A little about [Test-Driven Development (TDD)](http://en.wikipedia.org/wiki/Test-driven_development)
+
+
+
+[`assert`](http://godoc.org/github.com/stretchr/testify/assert "API documentation") package
+-------------------------------------------------------------------------------------------
+
+The `assert` package provides some helpful methods that allow you to write better test code in Go.
+
+  * Prints friendly, easy to read failure descriptions
+  * Allows for very readable code
+  * Optionally annotate each assertion with a message
+
+See it in action:
+
+```go
+package yours
+
+import (
+  "testing"
+  "github.com/stretchr/testify/assert"
+)
+
+func TestSomething(t *testing.T) {
+
+  // assert equality
+  assert.Equal(t, 123, 123, "they should be equal")
+
+  // assert inequality
+  assert.NotEqual(t, 123, 456, "they should not be equal")
+
+  // assert for nil (good for errors)
+  assert.Nil(t, object)
+
+  // assert for not nil (good when you expect something)
+  if assert.NotNil(t, object) {
+
+    // now we know that object isn't nil, we are safe to make
+    // further assertions without causing any errors
+    assert.Equal(t, "Something", object.Value)
+
+  }
+
+}
+```
+
+  * Every assert func takes the `testing.T` object as the first argument.  This is how it writes the errors out through the normal `go test` capabilities.
+  * Every assert func returns a bool indicating whether the assertion was successful or not, this is useful for if you want to go on making further assertions under certain conditions.
+
+if you assert many times, use the below:
+
+```go
+package yours
+
+import (
+  "testing"
+  "github.com/stretchr/testify/assert"
+)
+
+func TestSomething(t *testing.T) {
+  assert := assert.New(t)
+
+  // assert equality
+  assert.Equal(123, 123, "they should be equal")
+
+  // assert inequality
+  assert.NotEqual(123, 456, "they should not be equal")
+
+  // assert for nil (good for errors)
+  assert.Nil(object)
+
+  // assert for not nil (good when you expect something)
+  if assert.NotNil(object) {
+
+    // now we know that object isn't nil, we are safe to make
+    // further assertions without causing any errors
+    assert.Equal("Something", object.Value)
+  }
+}
+```
+
+[`require`](http://godoc.org/github.com/stretchr/testify/require "API documentation") package
+---------------------------------------------------------------------------------------------
+
+The `require` package provides same global functions as the `assert` package, but instead of returning a boolean result they terminate current test.
+
+See [t.FailNow](http://golang.org/pkg/testing/#T.FailNow) for details.
+
+[`mock`](http://godoc.org/github.com/stretchr/testify/mock "API documentation") package
+----------------------------------------------------------------------------------------
+
+The `mock` package provides a mechanism for easily writing mock objects that can be used in place of real objects when writing test code.
+
+An example test function that tests a piece of code that relies on an external object `testObj`, can setup expectations (testify) and assert that they indeed happened:
+
+```go
+package yours
+
+import (
+  "testing"
+  "github.com/stretchr/testify/mock"
+)
+
+/*
+  Test objects
+*/
+
+// MyMockedObject is a mocked object that implements an interface
+// that describes an object that the code I am testing relies on.
+type MyMockedObject struct{
+  mock.Mock
+}
+
+// DoSomething is a method on MyMockedObject that implements some interface
+// and just records the activity, and returns what the Mock object tells it to.
+//
+// In the real object, this method would do something useful, but since this
+// is a mocked object - we're just going to stub it out.
+//
+// NOTE: This method is not being tested here, code that uses this object is.
+func (m *MyMockedObject) DoSomething(number int) (bool, error) {
+
+  args := m.Called(number)
+  return args.Bool(0), args.Error(1)
+
+}
+
+/*
+  Actual test functions
+*/
+
+// TestSomething is an example of how to use our test object to
+// make assertions about some target code we are testing.
+func TestSomething(t *testing.T) {
+
+  // create an instance of our test object
+  testObj := new(MyMockedObject)
+
+  // setup expectations
+  testObj.On("DoSomething", 123).Return(true, nil)
+
+  // call the code we are testing
+  targetFuncThatDoesSomethingWithObj(testObj)
+
+  // assert that the expectations were met
+  testObj.AssertExpectations(t)
+
+}
+```
+
+For more information on how to write mock code, check out the [API documentation for the `mock` package](http://godoc.org/github.com/stretchr/testify/mock).
+
+You can use the [mockery tool](http://github.com/vektra/mockery) to autogenerate the mock code against an interface as well, making using mocks much quicker.
+
+[`suite`](http://godoc.org/github.com/stretchr/testify/suite "API documentation") package
+-----------------------------------------------------------------------------------------
+
+The `suite` package provides functionality that you might be used to from more common object oriented languages.  With it, you can build a testing suite as a struct, build setup/teardown methods and testing methods on your struct, and run them with 'go test' as per normal.
+
+An example suite is shown below:
+
+```go
+// Basic imports
+import (
+    "testing"
+    "github.com/stretchr/testify/assert"
+    "github.com/stretchr/testify/suite"
+)
+
+// Define the suite, and absorb the built-in basic suite
+// functionality from testify - including a T() method which
+// returns the current testing context
+type ExampleTestSuite struct {
+    suite.Suite
+    VariableThatShouldStartAtFive int
+}
+
+// Make sure that VariableThatShouldStartAtFive is set to five
+// before each test
+func (suite *ExampleTestSuite) SetupTest() {
+    suite.VariableThatShouldStartAtFive = 5
+}
+
+// All methods that begin with "Test" are run as tests within a
+// suite.
+func (suite *ExampleTestSuite) TestExample() {
+    assert.Equal(suite.T(), 5, suite.VariableThatShouldStartAtFive)
+}
+
+// In order for 'go test' to run this suite, we need to create
+// a normal test function and pass our suite to suite.Run
+func TestExampleTestSuite(t *testing.T) {
+    suite.Run(t, new(ExampleTestSuite))
+}
+```
+
+For a more complete example, using all of the functionality provided by the suite package, look at our [example testing suite](https://github.com/stretchr/testify/blob/master/suite/suite_test.go)
+
+For more information on writing suites, check out the [API documentation for the `suite` package](http://godoc.org/github.com/stretchr/testify/suite).
+
+`Suite` object has assertion methods:
+
+```go
+// Basic imports
+import (
+    "testing"
+    "github.com/stretchr/testify/suite"
+)
+
+// Define the suite, and absorb the built-in basic suite
+// functionality from testify - including assertion methods.
+type ExampleTestSuite struct {
+    suite.Suite
+    VariableThatShouldStartAtFive int
+}
+
+// Make sure that VariableThatShouldStartAtFive is set to five
+// before each test
+func (suite *ExampleTestSuite) SetupTest() {
+    suite.VariableThatShouldStartAtFive = 5
+}
+
+// All methods that begin with "Test" are run as tests within a
+// suite.
+func (suite *ExampleTestSuite) TestExample() {
+    suite.Equal(suite.VariableThatShouldStartAtFive, 5)
+}
+
+// In order for 'go test' to run this suite, we need to create
+// a normal test function and pass our suite to suite.Run
+func TestExampleTestSuite(t *testing.T) {
+    suite.Run(t, new(ExampleTestSuite))
+}
+```
+
+------
+
+Installation
+============
+
+To install Testify, use `go get`:
+
+    go get github.com/stretchr/testify
+
+This will then make the following packages available to you:
+
+    github.com/stretchr/testify/assert
+    github.com/stretchr/testify/mock
+    github.com/stretchr/testify/http
+
+Import the `testify/assert` package into your code using this template:
+
+```go
+package yours
+
+import (
+  "testing"
+  "github.com/stretchr/testify/assert"
+)
+
+func TestSomething(t *testing.T) {
+
+  assert.True(t, true, "True is true!")
+
+}
+```
+
+------
+
+Staying up to date
+==================
+
+To update Testify to the latest version, use `go get -u github.com/stretchr/testify`.
+
+------
+
+Contributing
+============
+
+Please feel free to submit issues, fork the repository and send pull requests!
+
+When submitting an issue, we ask that you please include a complete test function that demonstrates the issue.  Extra credit for those using Testify to write the test code that demonstrates it.

vendor/github.com/stretchr/testify/_codegen/main.go

@@ -0,0 +1,316 @@
+// This program reads all assertion functions from the assert package and
+// automatically generates the corresponding requires and forwarded assertions
+
+package main
+
+import (
+	"bytes"
+	"flag"
+	"fmt"
+	"go/ast"
+	"go/build"
+	"go/doc"
+	"go/format"
+	"go/importer"
+	"go/parser"
+	"go/token"
+	"go/types"
+	"io"
+	"io/ioutil"
+	"log"
+	"os"
+	"path"
+	"regexp"
+	"strings"
+	"text/template"
+
+	"github.com/ernesto-jimenez/gogen/imports"
+)
+
+var (
+	pkg       = flag.String("assert-path", "github.com/stretchr/testify/assert", "Path to the assert package")
+	includeF  = flag.Bool("include-format-funcs", false, "include format functions such as Errorf and Equalf")
+	outputPkg = flag.String("output-package", "", "package for the resulting code")
+	tmplFile  = flag.String("template", "", "What file to load the function template from")
+	out       = flag.String("out", "", "What file to write the source code to")
+)
+
+func main() {
+	flag.Parse()
+
+	scope, docs, err := parsePackageSource(*pkg)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	importer, funcs, err := analyzeCode(scope, docs)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if err := generateCode(importer, funcs); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func generateCode(importer imports.Importer, funcs []testFunc) error {
+	buff := bytes.NewBuffer(nil)
+
+	tmplHead, tmplFunc, err := parseTemplates()
+	if err != nil {
+		return err
+	}
+
+	// Generate header
+	if err := tmplHead.Execute(buff, struct {
+		Name    string
+		Imports map[string]string
+	}{
+		*outputPkg,
+		importer.Imports(),
+	}); err != nil {
+		return err
+	}
+
+	// Generate funcs
+	for _, fn := range funcs {
+		buff.Write([]byte("\n\n"))
+		if err := tmplFunc.Execute(buff, &fn); err != nil {
+			return err
+		}
+	}
+
+	code, err := format.Source(buff.Bytes())
+	if err != nil {
+		return err
+	}
+
+	// Write file
+	output, err := outputFile()
+	if err != nil {
+		return err
+	}
+	defer output.Close()
+	_, err = io.Copy(output, bytes.NewReader(code))
+	return err
+}
+
+func parseTemplates() (*template.Template, *template.Template, error) {
+	tmplHead, err := template.New("header").Parse(headerTemplate)
+	if err != nil {
+		return nil, nil, err
+	}
+	if *tmplFile != "" {
+		f, err := ioutil.ReadFile(*tmplFile)
+		if err != nil {
+			return nil, nil, err
+		}
+		funcTemplate = string(f)
+	}
+	tmpl, err := template.New("function").Parse(funcTemplate)
+	if err != nil {
+		return nil, nil, err
+	}
+	return tmplHead, tmpl, nil
+}
+
+func outputFile() (*os.File, error) {
+	filename := *out
+	if filename == "-" || (filename == "" && *tmplFile == "") {
+		return os.Stdout, nil
+	}
+	if filename == "" {
+		filename = strings.TrimSuffix(strings.TrimSuffix(*tmplFile, ".tmpl"), ".go") + ".go"
+	}
+	return os.Create(filename)
+}
+
+// analyzeCode takes the types scope and the docs and returns the import
+// information and information about all the assertion functions.
+func analyzeCode(scope *types.Scope, docs *doc.Package) (imports.Importer, []testFunc, error) {
+	testingT := scope.Lookup("TestingT").Type().Underlying().(*types.Interface)
+
+	importer := imports.New(*outputPkg)
+	var funcs []testFunc
+	// Go through all the top level functions
+	for _, fdocs := range docs.Funcs {
+		// Find the function
+		obj := scope.Lookup(fdocs.Name)
+
+		fn, ok := obj.(*types.Func)
+		if !ok {
+			continue
+		}
+		// Check function signature has at least two arguments
+		sig := fn.Type().(*types.Signature)
+		if sig.Params().Len() < 2 {
+			continue
+		}
+		// Check first argument is of type testingT
+		first, ok := sig.Params().At(0).Type().(*types.Named)
+		if !ok {
+			continue
+		}
+		firstType, ok := first.Underlying().(*types.Interface)
+		if !ok {
+			continue
+		}
+		if !types.Implements(firstType, testingT) {
+			continue
+		}
+
+		// Skip functions ending with f
+		if strings.HasSuffix(fdocs.Name, "f") && !*includeF {
+			continue
+		}
+
+		funcs = append(funcs, testFunc{*outputPkg, fdocs, fn})
+		importer.AddImportsFrom(sig.Params())
+	}
+	return importer, funcs, nil
+}
+
+// parsePackageSource returns the types scope and the package documentation from the package
+func parsePackageSource(pkg string) (*types.Scope, *doc.Package, error) {
+	pd, err := build.Import(pkg, ".", 0)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	fset := token.NewFileSet()
+	files := make(map[string]*ast.File)
+	fileList := make([]*ast.File, len(pd.GoFiles))
+	for i, fname := range pd.GoFiles {
+		src, err := ioutil.ReadFile(path.Join(pd.SrcRoot, pd.ImportPath, fname))
+		if err != nil {
+			return nil, nil, err
+		}
+		f, err := parser.ParseFile(fset, fname, src, parser.ParseComments|parser.AllErrors)
+		if err != nil {
+			return nil, nil, err
+		}
+		files[fname] = f
+		fileList[i] = f
+	}
+
+	cfg := types.Config{
+		Importer: importer.Default(),
+	}
+	info := types.Info{
+		Defs: make(map[*ast.Ident]types.Object),
+	}
+	tp, err := cfg.Check(pkg, fset, fileList, &info)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	scope := tp.Scope()
+
+	ap, _ := ast.NewPackage(fset, files, nil, nil)
+	docs := doc.New(ap, pkg, 0)
+
+	return scope, docs, nil
+}
+
+type testFunc struct {
+	CurrentPkg string
+	DocInfo    *doc.Func
+	TypeInfo   *types.Func
+}
+
+func (f *testFunc) Qualifier(p *types.Package) string {
+	if p == nil || p.Name() == f.CurrentPkg {
+		return ""
+	}
+	return p.Name()
+}
+
+func (f *testFunc) Params() string {
+	sig := f.TypeInfo.Type().(*types.Signature)
+	params := sig.Params()
+	p := ""
+	comma := ""
+	to := params.Len()
+	var i int
+
+	if sig.Variadic() {
+		to--
+	}
+	for i = 1; i < to; i++ {
+		param := params.At(i)
+		p += fmt.Sprintf("%s%s %s", comma, param.Name(), types.TypeString(param.Type(), f.Qualifier))
+		comma = ", "
+	}
+	if sig.Variadic() {
+		param := params.At(params.Len() - 1)
+		p += fmt.Sprintf("%s%s ...%s", comma, param.Name(), types.TypeString(param.Type().(*types.Slice).Elem(), f.Qualifier))
+	}
+	return p
+}
+
+func (f *testFunc) ForwardedParams() string {
+	sig := f.TypeInfo.Type().(*types.Signature)
+	params := sig.Params()
+	p := ""
+	comma := ""
+	to := params.Len()
+	var i int
+
+	if sig.Variadic() {
+		to--
+	}
+	for i = 1; i < to; i++ {
+		param := params.At(i)
+		p += fmt.Sprintf("%s%s", comma, param.Name())
+		comma = ", "
+	}
+	if sig.Variadic() {
+		param := params.At(params.Len() - 1)
+		p += fmt.Sprintf("%s%s...", comma, param.Name())
+	}
+	return p
+}
+
+func (f *testFunc) ParamsFormat() string {
+	return strings.Replace(f.Params(), "msgAndArgs", "msg string, args", 1)
+}
+
+func (f *testFunc) ForwardedParamsFormat() string {
+	return strings.Replace(f.ForwardedParams(), "msgAndArgs", "append([]interface{}{msg}, args...)", 1)
+}
+
+func (f *testFunc) Comment() string {
+	return "// " + strings.Replace(strings.TrimSpace(f.DocInfo.Doc), "\n", "\n// ", -1)
+}
+
+func (f *testFunc) CommentFormat() string {
+	search := fmt.Sprintf("%s", f.DocInfo.Name)
+	replace := fmt.Sprintf("%sf", f.DocInfo.Name)
+	comment := strings.Replace(f.Comment(), search, replace, -1)
+	exp := regexp.MustCompile(replace + `\(((\(\)|[^)])+)\)`)
+	return exp.ReplaceAllString(comment, replace+`($1, "error message %s", "formatted")`)
+}
+
+func (f *testFunc) CommentWithoutT(receiver string) string {
+	search := fmt.Sprintf("assert.%s(t, ", f.DocInfo.Name)
+	replace := fmt.Sprintf("%s.%s(", receiver, f.DocInfo.Name)
+	return strings.Replace(f.Comment(), search, replace, -1)
+}
+
+var headerTemplate = `/*
+* CODE GENERATED AUTOMATICALLY WITH github.com/stretchr/testify/_codegen
+* THIS FILE MUST NOT BE EDITED BY HAND
+*/
+
+package {{.Name}}
+
+import (
+{{range $path, $name := .Imports}}
+	{{$name}} "{{$path}}"{{end}}
+)
+`
+
+var funcTemplate = `{{.Comment}}
+func (fwd *AssertionsForwarder) {{.DocInfo.Name}}({{.Params}}) bool {
+	return assert.{{.DocInfo.Name}}({{.ForwardedParams}})
+}`

vendor/github.com/stretchr/testify/assert/assertion_format.go

@@ -0,0 +1,349 @@
+/*
+* CODE GENERATED AUTOMATICALLY WITH github.com/stretchr/testify/_codegen
+* THIS FILE MUST NOT BE EDITED BY HAND
+ */
+
+package assert
+
+import (
+	http "net/http"
+	url "net/url"
+	time "time"
+)
+
+// Conditionf uses a Comparison to assert a complex condition.
+func Conditionf(t TestingT, comp Comparison, msg string, args ...interface{}) bool {
+	return Condition(t, comp, append([]interface{}{msg}, args...)...)
+}
+
+// Containsf asserts that the specified string, list(array, slice...) or map contains the
+// specified substring or element.
+//
+//    assert.Containsf(t, "Hello World", "World", "error message %s", "formatted")
+//    assert.Containsf(t, ["Hello", "World"], "World", "error message %s", "formatted")
+//    assert.Containsf(t, {"Hello": "World"}, "Hello", "error message %s", "formatted")
+func Containsf(t TestingT, s interface{}, contains interface{}, msg string, args ...interface{}) bool {
+	return Contains(t, s, contains, append([]interface{}{msg}, args...)...)
+}
+
+// DirExistsf checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.
+func DirExistsf(t TestingT, path string, msg string, args ...interface{}) bool {
+	return DirExists(t, path, append([]interface{}{msg}, args...)...)
+}
+
+// ElementsMatchf asserts that the specified listA(array, slice...) is equal to specified
+// listB(array, slice...) ignoring the order of the elements. If there are duplicate elements,
+// the number of appearances of each of them in both lists should match.
+//
+// assert.ElementsMatchf(t, [1, 3, 2, 3], [1, 3, 3, 2], "error message %s", "formatted")
+func ElementsMatchf(t TestingT, listA interface{}, listB interface{}, msg string, args ...interface{}) bool {
+	return ElementsMatch(t, listA, listB, append([]interface{}{msg}, args...)...)
+}
+
+// Emptyf asserts that the specified object is empty.  I.e. nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+//  assert.Emptyf(t, obj, "error message %s", "formatted")
+func Emptyf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
+	return Empty(t, object, append([]interface{}{msg}, args...)...)
+}
+
+// Equalf asserts that two objects are equal.
+//
+//    assert.Equalf(t, 123, 123, "error message %s", "formatted")
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses). Function equality
+// cannot be determined and will always fail.
+func Equalf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+	return Equal(t, expected, actual, append([]interface{}{msg}, args...)...)
+}
+
+// EqualErrorf asserts that a function returned an error (i.e. not `nil`)
+// and that it is equal to the provided error.
+//
+//   actualObj, err := SomeFunction()
+//   assert.EqualErrorf(t, err,  expectedErrorString, "error message %s", "formatted")
+func EqualErrorf(t TestingT, theError error, errString string, msg string, args ...interface{}) bool {
+	return EqualError(t, theError, errString, append([]interface{}{msg}, args...)...)
+}
+
+// EqualValuesf asserts that two objects are equal or convertable to the same types
+// and equal.
+//
+//    assert.EqualValuesf(t, uint32(123, "error message %s", "formatted"), int32(123))
+func EqualValuesf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+	return EqualValues(t, expected, actual, append([]interface{}{msg}, args...)...)
+}
+
+// Errorf asserts that a function returned an error (i.e. not `nil`).
+//
+//   actualObj, err := SomeFunction()
+//   if assert.Errorf(t, err, "error message %s", "formatted") {
+// 	   assert.Equal(t, expectedErrorf, err)
+//   }
+func Errorf(t TestingT, err error, msg string, args ...interface{}) bool {
+	return Error(t, err, append([]interface{}{msg}, args...)...)
+}
+
+// Exactlyf asserts that two objects are equal in value and type.
+//
+//    assert.Exactlyf(t, int32(123, "error message %s", "formatted"), int64(123))
+func Exactlyf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+	return Exactly(t, expected, actual, append([]interface{}{msg}, args...)...)
+}
+
+// Failf reports a failure through
+func Failf(t TestingT, failureMessage string, msg string, args ...interface{}) bool {
+	return Fail(t, failureMessage, append([]interface{}{msg}, args...)...)
+}
+
+// FailNowf fails test
+func FailNowf(t TestingT, failureMessage string, msg string, args ...interface{}) bool {
+	return FailNow(t, failureMessage, append([]interface{}{msg}, args...)...)
+}
+
+// Falsef asserts that the specified value is false.
+//
+//    assert.Falsef(t, myBool, "error message %s", "formatted")
+func Falsef(t TestingT, value bool, msg string, args ...interface{}) bool {
+	return False(t, value, append([]interface{}{msg}, args...)...)
+}
+
+// FileExistsf checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.
+func FileExistsf(t TestingT, path string, msg string, args ...interface{}) bool {
+	return FileExists(t, path, append([]interface{}{msg}, args...)...)
+}
+
+// HTTPBodyContainsf asserts that a specified handler returns a
+// body that contains a string.
+//
+//  assert.HTTPBodyContainsf(t, myHandler, "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPBodyContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool {
+	return HTTPBodyContains(t, handler, method, url, values, str, append([]interface{}{msg}, args...)...)
+}
+
+// HTTPBodyNotContainsf asserts that a specified handler returns a
+// body that does not contain a string.
+//
+//  assert.HTTPBodyNotContainsf(t, myHandler, "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPBodyNotContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool {
+	return HTTPBodyNotContains(t, handler, method, url, values, str, append([]interface{}{msg}, args...)...)
+}
+
+// HTTPErrorf asserts that a specified handler returns an error status code.
+//
+//  assert.HTTPErrorf(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).
+func HTTPErrorf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
+	return HTTPError(t, handler, method, url, values, append([]interface{}{msg}, args...)...)
+}
+
+// HTTPRedirectf asserts that a specified handler returns a redirect status code.
+//
+//  assert.HTTPRedirectf(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).
+func HTTPRedirectf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
+	return HTTPRedirect(t, handler, method, url, values, append([]interface{}{msg}, args...)...)
+}
+
+// HTTPSuccessf asserts that a specified handler returns a success status code.
+//
+//  assert.HTTPSuccessf(t, myHandler, "POST", "http://www.google.com", nil, "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPSuccessf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
+	return HTTPSuccess(t, handler, method, url, values, append([]interface{}{msg}, args...)...)
+}
+
+// Implementsf asserts that an object is implemented by the specified interface.
+//
+//    assert.Implementsf(t, (*MyInterface, "error message %s", "formatted")(nil), new(MyObject))
+func Implementsf(t TestingT, interfaceObject interface{}, object interface{}, msg string, args ...interface{}) bool {
+	return Implements(t, interfaceObject, object, append([]interface{}{msg}, args...)...)
+}
+
+// InDeltaf asserts that the two numerals are within delta of each other.
+//
+// 	 assert.InDeltaf(t, math.Pi, (22 / 7.0, "error message %s", "formatted"), 0.01)
+func InDeltaf(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
+	return InDelta(t, expected, actual, delta, append([]interface{}{msg}, args...)...)
+}
+
+// InDeltaMapValuesf is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.
+func InDeltaMapValuesf(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
+	return InDeltaMapValues(t, expected, actual, delta, append([]interface{}{msg}, args...)...)
+}
+
+// InDeltaSlicef is the same as InDelta, except it compares two slices.
+func InDeltaSlicef(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
+	return InDeltaSlice(t, expected, actual, delta, append([]interface{}{msg}, args...)...)
+}
+
+// InEpsilonf asserts that expected and actual have a relative error less than epsilon
+func InEpsilonf(t TestingT, expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool {
+	return InEpsilon(t, expected, actual, epsilon, append([]interface{}{msg}, args...)...)
+}
+
+// InEpsilonSlicef is the same as InEpsilon, except it compares each value from two slices.
+func InEpsilonSlicef(t TestingT, expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool {
+	return InEpsilonSlice(t, expected, actual, epsilon, append([]interface{}{msg}, args...)...)
+}
+
+// IsTypef asserts that the specified objects are of the same type.
+func IsTypef(t TestingT, expectedType interface{}, object interface{}, msg string, args ...interface{}) bool {
+	return IsType(t, expectedType, object, append([]interface{}{msg}, args...)...)
+}
+
+// JSONEqf asserts that two JSON strings are equivalent.
+//
+//  assert.JSONEqf(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`, "error message %s", "formatted")
+func JSONEqf(t TestingT, expected string, actual string, msg string, args ...interface{}) bool {
+	return JSONEq(t, expected, actual, append([]interface{}{msg}, args...)...)
+}
+
+// Lenf asserts that the specified object has specific length.
+// Lenf also fails if the object has a type that len() not accept.
+//
+//    assert.Lenf(t, mySlice, 3, "error message %s", "formatted")
+func Lenf(t TestingT, object interface{}, length int, msg string, args ...interface{}) bool {
+	return Len(t, object, length, append([]interface{}{msg}, args...)...)
+}
+
+// Nilf asserts that the specified object is nil.
+//
+//    assert.Nilf(t, err, "error message %s", "formatted")
+func Nilf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
+	return Nil(t, object, append([]interface{}{msg}, args...)...)
+}
+
+// NoErrorf asserts that a function returned no error (i.e. `nil`).
+//
+//   actualObj, err := SomeFunction()
+//   if assert.NoErrorf(t, err, "error message %s", "formatted") {
+// 	   assert.Equal(t, expectedObj, actualObj)
+//   }
+func NoErrorf(t TestingT, err error, msg string, args ...interface{}) bool {
+	return NoError(t, err, append([]interface{}{msg}, args...)...)
+}
+
+// NotContainsf asserts that the specified string, list(array, slice...) or map does NOT contain the
+// specified substring or element.
+//
+//    assert.NotContainsf(t, "Hello World", "Earth", "error message %s", "formatted")
+//    assert.NotContainsf(t, ["Hello", "World"], "Earth", "error message %s", "formatted")
+//    assert.NotContainsf(t, {"Hello": "World"}, "Earth", "error message %s", "formatted")
+func NotContainsf(t TestingT, s interface{}, contains interface{}, msg string, args ...interface{}) bool {
+	return NotContains(t, s, contains, append([]interface{}{msg}, args...)...)
+}
+
+// NotEmptyf asserts that the specified object is NOT empty.  I.e. not nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+//  if assert.NotEmptyf(t, obj, "error message %s", "formatted") {
+//    assert.Equal(t, "two", obj[1])
+//  }
+func NotEmptyf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
+	return NotEmpty(t, object, append([]interface{}{msg}, args...)...)
+}
+
+// NotEqualf asserts that the specified values are NOT equal.
+//
+//    assert.NotEqualf(t, obj1, obj2, "error message %s", "formatted")
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses).
+func NotEqualf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+	return NotEqual(t, expected, actual, append([]interface{}{msg}, args...)...)
+}
+
+// NotNilf asserts that the specified object is not nil.
+//
+//    assert.NotNilf(t, err, "error message %s", "formatted")
+func NotNilf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
+	return NotNil(t, object, append([]interface{}{msg}, args...)...)
+}
+
+// NotPanicsf asserts that the code inside the specified PanicTestFunc does NOT panic.
+//
+//   assert.NotPanicsf(t, func(){ RemainCalm() }, "error message %s", "formatted")
+func NotPanicsf(t TestingT, f PanicTestFunc, msg string, args ...interface{}) bool {
+	return NotPanics(t, f, append([]interface{}{msg}, args...)...)
+}
+
+// NotRegexpf asserts that a specified regexp does not match a string.
+//
+//  assert.NotRegexpf(t, regexp.MustCompile("starts", "error message %s", "formatted"), "it's starting")
+//  assert.NotRegexpf(t, "^start", "it's not starting", "error message %s", "formatted")
+func NotRegexpf(t TestingT, rx interface{}, str interface{}, msg string, args ...interface{}) bool {
+	return NotRegexp(t, rx, str, append([]interface{}{msg}, args...)...)
+}
+
+// NotSubsetf asserts that the specified list(array, slice...) contains not all
+// elements given in the specified subset(array, slice...).
+//
+//    assert.NotSubsetf(t, [1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]", "error message %s", "formatted")
+func NotSubsetf(t TestingT, list interface{}, subset interface{}, msg string, args ...interface{}) bool {
+	return NotSubset(t, list, subset, append([]interface{}{msg}, args...)...)
+}
+
+// NotZerof asserts that i is not the zero value for its type.
+func NotZerof(t TestingT, i interface{}, msg string, args ...interface{}) bool {
+	return NotZero(t, i, append([]interface{}{msg}, args...)...)
+}
+
+// Panicsf asserts that the code inside the specified PanicTestFunc panics.
+//
+//   assert.Panicsf(t, func(){ GoCrazy() }, "error message %s", "formatted")
+func Panicsf(t TestingT, f PanicTestFunc, msg string, args ...interface{}) bool {
+	return Panics(t, f, append([]interface{}{msg}, args...)...)
+}
+
+// PanicsWithValuef asserts that the code inside the specified PanicTestFunc panics, and that
+// the recovered panic value equals the expected panic value.
+//
+//   assert.PanicsWithValuef(t, "crazy error", func(){ GoCrazy() }, "error message %s", "formatted")
+func PanicsWithValuef(t TestingT, expected interface{}, f PanicTestFunc, msg string, args ...interface{}) bool {
+	return PanicsWithValue(t, expected, f, append([]interface{}{msg}, args...)...)
+}
+
+// Regexpf asserts that a specified regexp matches a string.
+//
+//  assert.Regexpf(t, regexp.MustCompile("start", "error message %s", "formatted"), "it's starting")
+//  assert.Regexpf(t, "start...$", "it's not starting", "error message %s", "formatted")
+func Regexpf(t TestingT, rx interface{}, str interface{}, msg string, args ...interface{}) bool {
+	return Regexp(t, rx, str, append([]interface{}{msg}, args...)...)
+}
+
+// Subsetf asserts that the specified list(array, slice...) contains all
+// elements given in the specified subset(array, slice...).
+//
+//    assert.Subsetf(t, [1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]", "error message %s", "formatted")
+func Subsetf(t TestingT, list interface{}, subset interface{}, msg string, args ...interface{}) bool {
+	return Subset(t, list, subset, append([]interface{}{msg}, args...)...)
+}
+
+// Truef asserts that the specified value is true.
+//
+//    assert.Truef(t, myBool, "error message %s", "formatted")
+func Truef(t TestingT, value bool, msg string, args ...interface{}) bool {
+	return True(t, value, append([]interface{}{msg}, args...)...)
+}
+
+// WithinDurationf asserts that the two times are within duration delta of each other.
+//
+//   assert.WithinDurationf(t, time.Now(), time.Now(), 10*time.Second, "error message %s", "formatted")
+func WithinDurationf(t TestingT, expected time.Time, actual time.Time, delta time.Duration, msg string, args ...interface{}) bool {
+	return WithinDuration(t, expected, actual, delta, append([]interface{}{msg}, args...)...)
+}
+
+// Zerof asserts that i is the zero value for its type.
+func Zerof(t TestingT, i interface{}, msg string, args ...interface{}) bool {
+	return Zero(t, i, append([]interface{}{msg}, args...)...)
+}

vendor/github.com/stretchr/testify/assert/assertion_format.go.tmpl

@@ -0,0 +1,4 @@
+{{.CommentFormat}}
+func {{.DocInfo.Name}}f(t TestingT, {{.ParamsFormat}}) bool {
+	return {{.DocInfo.Name}}(t, {{.ForwardedParamsFormat}})
+}

vendor/github.com/stretchr/testify/assert/assertion_forward.go

@@ -0,0 +1,686 @@
+/*
+* CODE GENERATED AUTOMATICALLY WITH github.com/stretchr/testify/_codegen
+* THIS FILE MUST NOT BE EDITED BY HAND
+ */
+
+package assert
+
+import (
+	http "net/http"
+	url "net/url"
+	time "time"
+)
+
+// Condition uses a Comparison to assert a complex condition.
+func (a *Assertions) Condition(comp Comparison, msgAndArgs ...interface{}) bool {
+	return Condition(a.t, comp, msgAndArgs...)
+}
+
+// Conditionf uses a Comparison to assert a complex condition.
+func (a *Assertions) Conditionf(comp Comparison, msg string, args ...interface{}) bool {
+	return Conditionf(a.t, comp, msg, args...)
+}
+
+// Contains asserts that the specified string, list(array, slice...) or map contains the
+// specified substring or element.
+//
+//    a.Contains("Hello World", "World")
+//    a.Contains(["Hello", "World"], "World")
+//    a.Contains({"Hello": "World"}, "Hello")
+func (a *Assertions) Contains(s interface{}, contains interface{}, msgAndArgs ...interface{}) bool {
+	return Contains(a.t, s, contains, msgAndArgs...)
+}
+
+// Containsf asserts that the specified string, list(array, slice...) or map contains the
+// specified substring or element.
+//
+//    a.Containsf("Hello World", "World", "error message %s", "formatted")
+//    a.Containsf(["Hello", "World"], "World", "error message %s", "formatted")
+//    a.Containsf({"Hello": "World"}, "Hello", "error message %s", "formatted")
+func (a *Assertions) Containsf(s interface{}, contains interface{}, msg string, args ...interface{}) bool {
+	return Containsf(a.t, s, contains, msg, args...)
+}
+
+// DirExists checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.
+func (a *Assertions) DirExists(path string, msgAndArgs ...interface{}) bool {
+	return DirExists(a.t, path, msgAndArgs...)
+}
+
+// DirExistsf checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.
+func (a *Assertions) DirExistsf(path string, msg string, args ...interface{}) bool {
+	return DirExistsf(a.t, path, msg, args...)
+}
+
+// ElementsMatch asserts that the specified listA(array, slice...) is equal to specified
+// listB(array, slice...) ignoring the order of the elements. If there are duplicate elements,
+// the number of appearances of each of them in both lists should match.
+//
+// a.ElementsMatch([1, 3, 2, 3], [1, 3, 3, 2])
+func (a *Assertions) ElementsMatch(listA interface{}, listB interface{}, msgAndArgs ...interface{}) bool {
+	return ElementsMatch(a.t, listA, listB, msgAndArgs...)
+}
+
+// ElementsMatchf asserts that the specified listA(array, slice...) is equal to specified
+// listB(array, slice...) ignoring the order of the elements. If there are duplicate elements,
+// the number of appearances of each of them in both lists should match.
+//
+// a.ElementsMatchf([1, 3, 2, 3], [1, 3, 3, 2], "error message %s", "formatted")
+func (a *Assertions) ElementsMatchf(listA interface{}, listB interface{}, msg string, args ...interface{}) bool {
+	return ElementsMatchf(a.t, listA, listB, msg, args...)
+}
+
+// Empty asserts that the specified object is empty.  I.e. nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+//  a.Empty(obj)
+func (a *Assertions) Empty(object interface{}, msgAndArgs ...interface{}) bool {
+	return Empty(a.t, object, msgAndArgs...)
+}
+
+// Emptyf asserts that the specified object is empty.  I.e. nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+//  a.Emptyf(obj, "error message %s", "formatted")
+func (a *Assertions) Emptyf(object interface{}, msg string, args ...interface{}) bool {
+	return Emptyf(a.t, object, msg, args...)
+}
+
+// Equal asserts that two objects are equal.
+//
+//    a.Equal(123, 123)
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses). Function equality
+// cannot be determined and will always fail.
+func (a *Assertions) Equal(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
+	return Equal(a.t, expected, actual, msgAndArgs...)
+}
+
+// EqualError asserts that a function returned an error (i.e. not `nil`)
+// and that it is equal to the provided error.
+//
+//   actualObj, err := SomeFunction()
+//   a.EqualError(err,  expectedErrorString)
+func (a *Assertions) EqualError(theError error, errString string, msgAndArgs ...interface{}) bool {
+	return EqualError(a.t, theError, errString, msgAndArgs...)
+}
+
+// EqualErrorf asserts that a function returned an error (i.e. not `nil`)
+// and that it is equal to the provided error.
+//
+//   actualObj, err := SomeFunction()
+//   a.EqualErrorf(err,  expectedErrorString, "error message %s", "formatted")
+func (a *Assertions) EqualErrorf(theError error, errString string, msg string, args ...interface{}) bool {
+	return EqualErrorf(a.t, theError, errString, msg, args...)
+}
+
+// EqualValues asserts that two objects are equal or convertable to the same types
+// and equal.
+//
+//    a.EqualValues(uint32(123), int32(123))
+func (a *Assertions) EqualValues(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
+	return EqualValues(a.t, expected, actual, msgAndArgs...)
+}
+
+// EqualValuesf asserts that two objects are equal or convertable to the same types
+// and equal.
+//
+//    a.EqualValuesf(uint32(123, "error message %s", "formatted"), int32(123))
+func (a *Assertions) EqualValuesf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+	return EqualValuesf(a.t, expected, actual, msg, args...)
+}
+
+// Equalf asserts that two objects are equal.
+//
+//    a.Equalf(123, 123, "error message %s", "formatted")
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses). Function equality
+// cannot be determined and will always fail.
+func (a *Assertions) Equalf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+	return Equalf(a.t, expected, actual, msg, args...)
+}
+
+// Error asserts that a function returned an error (i.e. not `nil`).
+//
+//   actualObj, err := SomeFunction()
+//   if a.Error(err) {
+// 	   assert.Equal(t, expectedError, err)
+//   }
+func (a *Assertions) Error(err error, msgAndArgs ...interface{}) bool {
+	return Error(a.t, err, msgAndArgs...)
+}
+
+// Errorf asserts that a function returned an error (i.e. not `nil`).
+//
+//   actualObj, err := SomeFunction()
+//   if a.Errorf(err, "error message %s", "formatted") {
+// 	   assert.Equal(t, expectedErrorf, err)
+//   }
+func (a *Assertions) Errorf(err error, msg string, args ...interface{}) bool {
+	return Errorf(a.t, err, msg, args...)
+}
+
+// Exactly asserts that two objects are equal in value and type.
+//
+//    a.Exactly(int32(123), int64(123))
+func (a *Assertions) Exactly(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
+	return Exactly(a.t, expected, actual, msgAndArgs...)
+}
+
+// Exactlyf asserts that two objects are equal in value and type.
+//
+//    a.Exactlyf(int32(123, "error message %s", "formatted"), int64(123))
+func (a *Assertions) Exactlyf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+	return Exactlyf(a.t, expected, actual, msg, args...)
+}
+
+// Fail reports a failure through
+func (a *Assertions) Fail(failureMessage string, msgAndArgs ...interface{}) bool {
+	return Fail(a.t, failureMessage, msgAndArgs...)
+}
+
+// FailNow fails test
+func (a *Assertions) FailNow(failureMessage string, msgAndArgs ...interface{}) bool {
+	return FailNow(a.t, failureMessage, msgAndArgs...)
+}
+
+// FailNowf fails test
+func (a *Assertions) FailNowf(failureMessage string, msg string, args ...interface{}) bool {
+	return FailNowf(a.t, failureMessage, msg, args...)
+}
+
+// Failf reports a failure through
+func (a *Assertions) Failf(failureMessage string, msg string, args ...interface{}) bool {
+	return Failf(a.t, failureMessage, msg, args...)
+}
+
+// False asserts that the specified value is false.
+//
+//    a.False(myBool)
+func (a *Assertions) False(value bool, msgAndArgs ...interface{}) bool {
+	return False(a.t, value, msgAndArgs...)
+}
+
+// Falsef asserts that the specified value is false.
+//
+//    a.Falsef(myBool, "error message %s", "formatted")
+func (a *Assertions) Falsef(value bool, msg string, args ...interface{}) bool {
+	return Falsef(a.t, value, msg, args...)
+}
+
+// FileExists checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.
+func (a *Assertions) FileExists(path string, msgAndArgs ...interface{}) bool {
+	return FileExists(a.t, path, msgAndArgs...)
+}
+
+// FileExistsf checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.
+func (a *Assertions) FileExistsf(path string, msg string, args ...interface{}) bool {
+	return FileExistsf(a.t, path, msg, args...)
+}
+
+// HTTPBodyContains asserts that a specified handler returns a
+// body that contains a string.
+//
+//  a.HTTPBodyContains(myHandler, "www.google.com", nil, "I'm Feeling Lucky")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPBodyContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool {
+	return HTTPBodyContains(a.t, handler, method, url, values, str, msgAndArgs...)
+}
+
+// HTTPBodyContainsf asserts that a specified handler returns a
+// body that contains a string.
+//
+//  a.HTTPBodyContainsf(myHandler, "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPBodyContainsf(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool {
+	return HTTPBodyContainsf(a.t, handler, method, url, values, str, msg, args...)
+}
+
+// HTTPBodyNotContains asserts that a specified handler returns a
+// body that does not contain a string.
+//
+//  a.HTTPBodyNotContains(myHandler, "www.google.com", nil, "I'm Feeling Lucky")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPBodyNotContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool {
+	return HTTPBodyNotContains(a.t, handler, method, url, values, str, msgAndArgs...)
+}
+
+// HTTPBodyNotContainsf asserts that a specified handler returns a
+// body that does not contain a string.
+//
+//  a.HTTPBodyNotContainsf(myHandler, "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPBodyNotContainsf(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool {
+	return HTTPBodyNotContainsf(a.t, handler, method, url, values, str, msg, args...)
+}
+
+// HTTPError asserts that a specified handler returns an error status code.
+//
+//  a.HTTPError(myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPError(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) bool {
+	return HTTPError(a.t, handler, method, url, values, msgAndArgs...)
+}
+
+// HTTPErrorf asserts that a specified handler returns an error status code.
+//
+//  a.HTTPErrorf(myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).
+func (a *Assertions) HTTPErrorf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
+	return HTTPErrorf(a.t, handler, method, url, values, msg, args...)
+}
+
+// HTTPRedirect asserts that a specified handler returns a redirect status code.
+//
+//  a.HTTPRedirect(myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPRedirect(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) bool {
+	return HTTPRedirect(a.t, handler, method, url, values, msgAndArgs...)
+}
+
+// HTTPRedirectf asserts that a specified handler returns a redirect status code.
+//
+//  a.HTTPRedirectf(myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).
+func (a *Assertions) HTTPRedirectf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
+	return HTTPRedirectf(a.t, handler, method, url, values, msg, args...)
+}
+
+// HTTPSuccess asserts that a specified handler returns a success status code.
+//
+//  a.HTTPSuccess(myHandler, "POST", "http://www.google.com", nil)
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPSuccess(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) bool {
+	return HTTPSuccess(a.t, handler, method, url, values, msgAndArgs...)
+}
+
+// HTTPSuccessf asserts that a specified handler returns a success status code.
+//
+//  a.HTTPSuccessf(myHandler, "POST", "http://www.google.com", nil, "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPSuccessf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
+	return HTTPSuccessf(a.t, handler, method, url, values, msg, args...)
+}
+
+// Implements asserts that an object is implemented by the specified interface.
+//
+//    a.Implements((*MyInterface)(nil), new(MyObject))
+func (a *Assertions) Implements(interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) bool {
+	return Implements(a.t, interfaceObject, object, msgAndArgs...)
+}
+
+// Implementsf asserts that an object is implemented by the specified interface.
+//
+//    a.Implementsf((*MyInterface, "error message %s", "formatted")(nil), new(MyObject))
+func (a *Assertions) Implementsf(interfaceObject interface{}, object interface{}, msg string, args ...interface{}) bool {
+	return Implementsf(a.t, interfaceObject, object, msg, args...)
+}
+
+// InDelta asserts that the two numerals are within delta of each other.
+//
+// 	 a.InDelta(math.Pi, (22 / 7.0), 0.01)
+func (a *Assertions) InDelta(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
+	return InDelta(a.t, expected, actual, delta, msgAndArgs...)
+}
+
+// InDeltaMapValues is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.
+func (a *Assertions) InDeltaMapValues(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
+	return InDeltaMapValues(a.t, expected, actual, delta, msgAndArgs...)
+}
+
+// InDeltaMapValuesf is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.
+func (a *Assertions) InDeltaMapValuesf(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
+	return InDeltaMapValuesf(a.t, expected, actual, delta, msg, args...)
+}
+
+// InDeltaSlice is the same as InDelta, except it compares two slices.
+func (a *Assertions) InDeltaSlice(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
+	return InDeltaSlice(a.t, expected, actual, delta, msgAndArgs...)
+}
+
+// InDeltaSlicef is the same as InDelta, except it compares two slices.
+func (a *Assertions) InDeltaSlicef(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
+	return InDeltaSlicef(a.t, expected, actual, delta, msg, args...)
+}
+
+// InDeltaf asserts that the two numerals are within delta of each other.
+//
+// 	 a.InDeltaf(math.Pi, (22 / 7.0, "error message %s", "formatted"), 0.01)
+func (a *Assertions) InDeltaf(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
+	return InDeltaf(a.t, expected, actual, delta, msg, args...)
+}
+
+// InEpsilon asserts that expected and actual have a relative error less than epsilon
+func (a *Assertions) InEpsilon(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool {
+	return InEpsilon(a.t, expected, actual, epsilon, msgAndArgs...)
+}
+
+// InEpsilonSlice is the same as InEpsilon, except it compares each value from two slices.
+func (a *Assertions) InEpsilonSlice(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool {
+	return InEpsilonSlice(a.t, expected, actual, epsilon, msgAndArgs...)
+}
+
+// InEpsilonSlicef is the same as InEpsilon, except it compares each value from two slices.
+func (a *Assertions) InEpsilonSlicef(expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool {
+	return InEpsilonSlicef(a.t, expected, actual, epsilon, msg, args...)
+}
+
+// InEpsilonf asserts that expected and actual have a relative error less than epsilon
+func (a *Assertions) InEpsilonf(expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool {
+	return InEpsilonf(a.t, expected, actual, epsilon, msg, args...)
+}
+
+// IsType asserts that the specified objects are of the same type.
+func (a *Assertions) IsType(expectedType interface{}, object interface{}, msgAndArgs ...interface{}) bool {
+	return IsType(a.t, expectedType, object, msgAndArgs...)
+}
+
+// IsTypef asserts that the specified objects are of the same type.
+func (a *Assertions) IsTypef(expectedType interface{}, object interface{}, msg string, args ...interface{}) bool {
+	return IsTypef(a.t, expectedType, object, msg, args...)
+}
+
+// JSONEq asserts that two JSON strings are equivalent.
+//
+//  a.JSONEq(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
+func (a *Assertions) JSONEq(expected string, actual string, msgAndArgs ...interface{}) bool {
+	return JSONEq(a.t, expected, actual, msgAndArgs...)
+}
+
+// JSONEqf asserts that two JSON strings are equivalent.
+//
+//  a.JSONEqf(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`, "error message %s", "formatted")
+func (a *Assertions) JSONEqf(expected string, actual string, msg string, args ...interface{}) bool {
+	return JSONEqf(a.t, expected, actual, msg, args...)
+}
+
+// Len asserts that the specified object has specific length.
+// Len also fails if the object has a type that len() not accept.
+//
+//    a.Len(mySlice, 3)
+func (a *Assertions) Len(object interface{}, length int, msgAndArgs ...interface{}) bool {
+	return Len(a.t, object, length, msgAndArgs...)
+}
+
+// Lenf asserts that the specified object has specific length.
+// Lenf also fails if the object has a type that len() not accept.
+//
+//    a.Lenf(mySlice, 3, "error message %s", "formatted")
+func (a *Assertions) Lenf(object interface{}, length int, msg string, args ...interface{}) bool {
+	return Lenf(a.t, object, length, msg, args...)
+}
+
+// Nil asserts that the specified object is nil.
+//
+//    a.Nil(err)
+func (a *Assertions) Nil(object interface{}, msgAndArgs ...interface{}) bool {
+	return Nil(a.t, object, msgAndArgs...)
+}
+
+// Nilf asserts that the specified object is nil.
+//
+//    a.Nilf(err, "error message %s", "formatted")
+func (a *Assertions) Nilf(object interface{}, msg string, args ...interface{}) bool {
+	return Nilf(a.t, object, msg, args...)
+}
+
+// NoError asserts that a function returned no error (i.e. `nil`).
+//
+//   actualObj, err := SomeFunction()
+//   if a.NoError(err) {
+// 	   assert.Equal(t, expectedObj, actualObj)
+//   }
+func (a *Assertions) NoError(err error, msgAndArgs ...interface{}) bool {
+	return NoError(a.t, err, msgAndArgs...)
+}
+
+// NoErrorf asserts that a function returned no error (i.e. `nil`).
+//
+//   actualObj, err := SomeFunction()
+//   if a.NoErrorf(err, "error message %s", "formatted") {
+// 	   assert.Equal(t, expectedObj, actualObj)
+//   }
+func (a *Assertions) NoErrorf(err error, msg string, args ...interface{}) bool {
+	return NoErrorf(a.t, err, msg, args...)
+}
+
+// NotContains asserts that the specified string, list(array, slice...) or map does NOT contain the
+// specified substring or element.
+//
+//    a.NotContains("Hello World", "Earth")
+//    a.NotContains(["Hello", "World"], "Earth")
+//    a.NotContains({"Hello": "World"}, "Earth")
+func (a *Assertions) NotContains(s interface{}, contains interface{}, msgAndArgs ...interface{}) bool {
+	return NotContains(a.t, s, contains, msgAndArgs...)
+}
+
+// NotContainsf asserts that the specified string, list(array, slice...) or map does NOT contain the
+// specified substring or element.
+//
+//    a.NotContainsf("Hello World", "Earth", "error message %s", "formatted")
+//    a.NotContainsf(["Hello", "World"], "Earth", "error message %s", "formatted")
+//    a.NotContainsf({"Hello": "World"}, "Earth", "error message %s", "formatted")
+func (a *Assertions) NotContainsf(s interface{}, contains interface{}, msg string, args ...interface{}) bool {
+	return NotContainsf(a.t, s, contains, msg, args...)
+}
+
+// NotEmpty asserts that the specified object is NOT empty.  I.e. not nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+//  if a.NotEmpty(obj) {
+//    assert.Equal(t, "two", obj[1])
+//  }
+func (a *Assertions) NotEmpty(object interface{}, msgAndArgs ...interface{}) bool {
+	return NotEmpty(a.t, object, msgAndArgs...)
+}
+
+// NotEmptyf asserts that the specified object is NOT empty.  I.e. not nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+//  if a.NotEmptyf(obj, "error message %s", "formatted") {
+//    assert.Equal(t, "two", obj[1])
+//  }
+func (a *Assertions) NotEmptyf(object interface{}, msg string, args ...interface{}) bool {
+	return NotEmptyf(a.t, object, msg, args...)
+}
+
+// NotEqual asserts that the specified values are NOT equal.
+//
+//    a.NotEqual(obj1, obj2)
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses).
+func (a *Assertions) NotEqual(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
+	return NotEqual(a.t, expected, actual, msgAndArgs...)
+}
+
+// NotEqualf asserts that the specified values are NOT equal.
+//
+//    a.NotEqualf(obj1, obj2, "error message %s", "formatted")
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses).
+func (a *Assertions) NotEqualf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+	return NotEqualf(a.t, expected, actual, msg, args...)
+}
+
+// NotNil asserts that the specified object is not nil.
+//
+//    a.NotNil(err)
+func (a *Assertions) NotNil(object interface{}, msgAndArgs ...interface{}) bool {
+	return NotNil(a.t, object, msgAndArgs...)
+}
+
+// NotNilf asserts that the specified object is not nil.
+//
+//    a.NotNilf(err, "error message %s", "formatted")
+func (a *Assertions) NotNilf(object interface{}, msg string, args ...interface{}) bool {
+	return NotNilf(a.t, object, msg, args...)
+}
+
+// NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic.
+//
+//   a.NotPanics(func(){ RemainCalm() })
+func (a *Assertions) NotPanics(f PanicTestFunc, msgAndArgs ...interface{}) bool {
+	return NotPanics(a.t, f, msgAndArgs...)
+}
+
+// NotPanicsf asserts that the code inside the specified PanicTestFunc does NOT panic.
+//
+//   a.NotPanicsf(func(){ RemainCalm() }, "error message %s", "formatted")
+func (a *Assertions) NotPanicsf(f PanicTestFunc, msg string, args ...interface{}) bool {
+	return NotPanicsf(a.t, f, msg, args...)
+}
+
+// NotRegexp asserts that a specified regexp does not match a string.
+//
+//  a.NotRegexp(regexp.MustCompile("starts"), "it's starting")
+//  a.NotRegexp("^start", "it's not starting")
+func (a *Assertions) NotRegexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
+	return NotRegexp(a.t, rx, str, msgAndArgs...)
+}
+
+// NotRegexpf asserts that a specified regexp does not match a string.
+//
+//  a.NotRegexpf(regexp.MustCompile("starts", "error message %s", "formatted"), "it's starting")
+//  a.NotRegexpf("^start", "it's not starting", "error message %s", "formatted")
+func (a *Assertions) NotRegexpf(rx interface{}, str interface{}, msg string, args ...interface{}) bool {
+	return NotRegexpf(a.t, rx, str, msg, args...)
+}
+
+// NotSubset asserts that the specified list(array, slice...) contains not all
+// elements given in the specified subset(array, slice...).
+//
+//    a.NotSubset([1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]")
+func (a *Assertions) NotSubset(list interface{}, subset interface{}, msgAndArgs ...interface{}) bool {
+	return NotSubset(a.t, list, subset, msgAndArgs...)
+}
+
+// NotSubsetf asserts that the specified list(array, slice...) contains not all
+// elements given in the specified subset(array, slice...).
+//
+//    a.NotSubsetf([1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]", "error message %s", "formatted")
+func (a *Assertions) NotSubsetf(list interface{}, subset interface{}, msg string, args ...interface{}) bool {
+	return NotSubsetf(a.t, list, subset, msg, args...)
+}
+
+// NotZero asserts that i is not the zero value for its type.
+func (a *Assertions) NotZero(i interface{}, msgAndArgs ...interface{}) bool {
+	return NotZero(a.t, i, msgAndArgs...)
+}
+
+// NotZerof asserts that i is not the zero value for its type.
+func (a *Assertions) NotZerof(i interface{}, msg string, args ...interface{}) bool {
+	return NotZerof(a.t, i, msg, args...)
+}
+
+// Panics asserts that the code inside the specified PanicTestFunc panics.
+//
+//   a.Panics(func(){ GoCrazy() })
+func (a *Assertions) Panics(f PanicTestFunc, msgAndArgs ...interface{}) bool {
+	return Panics(a.t, f, msgAndArgs...)
+}
+
+// PanicsWithValue asserts that the code inside the specified PanicTestFunc panics, and that
+// the recovered panic value equals the expected panic value.
+//
+//   a.PanicsWithValue("crazy error", func(){ GoCrazy() })
+func (a *Assertions) PanicsWithValue(expected interface{}, f PanicTestFunc, msgAndArgs ...interface{}) bool {
+	return PanicsWithValue(a.t, expected, f, msgAndArgs...)
+}
+
+// PanicsWithValuef asserts that the code inside the specified PanicTestFunc panics, and that
+// the recovered panic value equals the expected panic value.
+//
+//   a.PanicsWithValuef("crazy error", func(){ GoCrazy() }, "error message %s", "formatted")
+func (a *Assertions) PanicsWithValuef(expected interface{}, f PanicTestFunc, msg string, args ...interface{}) bool {
+	return PanicsWithValuef(a.t, expected, f, msg, args...)
+}
+
+// Panicsf asserts that the code inside the specified PanicTestFunc panics.
+//
+//   a.Panicsf(func(){ GoCrazy() }, "error message %s", "formatted")
+func (a *Assertions) Panicsf(f PanicTestFunc, msg string, args ...interface{}) bool {
+	return Panicsf(a.t, f, msg, args...)
+}
+
+// Regexp asserts that a specified regexp matches a string.
+//
+//  a.Regexp(regexp.MustCompile("start"), "it's starting")
+//  a.Regexp("start...$", "it's not starting")
+func (a *Assertions) Regexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
+	return Regexp(a.t, rx, str, msgAndArgs...)
+}
+
+// Regexpf asserts that a specified regexp matches a string.
+//
+//  a.Regexpf(regexp.MustCompile("start", "error message %s", "formatted"), "it's starting")
+//  a.Regexpf("start...$", "it's not starting", "error message %s", "formatted")
+func (a *Assertions) Regexpf(rx interface{}, str interface{}, msg string, args ...interface{}) bool {
+	return Regexpf(a.t, rx, str, msg, args...)
+}
+
+// Subset asserts that the specified list(array, slice...) contains all
+// elements given in the specified subset(array, slice...).
+//
+//    a.Subset([1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]")
+func (a *Assertions) Subset(list interface{}, subset interface{}, msgAndArgs ...interface{}) bool {
+	return Subset(a.t, list, subset, msgAndArgs...)
+}
+
+// Subsetf asserts that the specified list(array, slice...) contains all
+// elements given in the specified subset(array, slice...).
+//
+//    a.Subsetf([1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]", "error message %s", "formatted")
+func (a *Assertions) Subsetf(list interface{}, subset interface{}, msg string, args ...interface{}) bool {
+	return Subsetf(a.t, list, subset, msg, args...)
+}
+
+// True asserts that the specified value is true.
+//
+//    a.True(myBool)
+func (a *Assertions) True(value bool, msgAndArgs ...interface{}) bool {
+	return True(a.t, value, msgAndArgs...)
+}
+
+// Truef asserts that the specified value is true.
+//
+//    a.Truef(myBool, "error message %s", "formatted")
+func (a *Assertions) Truef(value bool, msg string, args ...interface{}) bool {
+	return Truef(a.t, value, msg, args...)
+}
+
+// WithinDuration asserts that the two times are within duration delta of each other.
+//
+//   a.WithinDuration(time.Now(), time.Now(), 10*time.Second)
+func (a *Assertions) WithinDuration(expected time.Time, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) bool {
+	return WithinDuration(a.t, expected, actual, delta, msgAndArgs...)
+}
+
+// WithinDurationf asserts that the two times are within duration delta of each other.
+//
+//   a.WithinDurationf(time.Now(), time.Now(), 10*time.Second, "error message %s", "formatted")
+func (a *Assertions) WithinDurationf(expected time.Time, actual time.Time, delta time.Duration, msg string, args ...interface{}) bool {
+	return WithinDurationf(a.t, expected, actual, delta, msg, args...)
+}
+
+// Zero asserts that i is the zero value for its type.
+func (a *Assertions) Zero(i interface{}, msgAndArgs ...interface{}) bool {
+	return Zero(a.t, i, msgAndArgs...)
+}
+
+// Zerof asserts that i is the zero value for its type.
+func (a *Assertions) Zerof(i interface{}, msg string, args ...interface{}) bool {
+	return Zerof(a.t, i, msg, args...)
+}

vendor/github.com/stretchr/testify/assert/assertion_forward.go.tmpl

@@ -0,0 +1,4 @@
+{{.CommentWithoutT "a"}}
+func (a *Assertions) {{.DocInfo.Name}}({{.Params}}) bool {
+	return {{.DocInfo.Name}}(a.t, {{.ForwardedParams}})
+}

vendor/github.com/stretchr/testify/assert/doc.go

@@ -0,0 +1,45 @@
+// Package assert provides a set of comprehensive testing tools for use with the normal Go testing system.
+//
+// Example Usage
+//
+// The following is a complete example using assert in a standard test function:
+//    import (
+//      "testing"
+//      "github.com/stretchr/testify/assert"
+//    )
+//
+//    func TestSomething(t *testing.T) {
+//
+//      var a string = "Hello"
+//      var b string = "Hello"
+//
+//      assert.Equal(t, a, b, "The two words should be the same.")
+//
+//    }
+//
+// if you assert many times, use the format below:
+//
+//    import (
+//      "testing"
+//      "github.com/stretchr/testify/assert"
+//    )
+//
+//    func TestSomething(t *testing.T) {
+//      assert := assert.New(t)
+//
+//      var a string = "Hello"
+//      var b string = "Hello"
+//
+//      assert.Equal(a, b, "The two words should be the same.")
+//    }
+//
+// Assertions
+//
+// Assertions allow you to easily write test code, and are global funcs in the `assert` package.
+// All assertion functions take, as the first argument, the `*testing.T` object provided by the
+// testing framework. This allows the assertion funcs to write the failings and other details to
+// the correct place.
+//
+// Every assertion function also takes an optional string message as the final argument,
+// allowing custom error messages to be appended to the message the assertion method outputs.
+package assert

vendor/github.com/stretchr/testify/assert/errors.go

@@ -0,0 +1,10 @@
+package assert
+
+import (
+	"errors"
+)
+
+// AnError is an error instance useful for testing.  If the code does not care
+// about error specifics, and only needs to return the error for example, this
+// error should be used to make the test code more readable.
+var AnError = errors.New("assert.AnError general error for testing")

vendor/github.com/stretchr/testify/assert/forward_assertions.go

@@ -0,0 +1,16 @@
+package assert
+
+// Assertions provides assertion methods around the
+// TestingT interface.
+type Assertions struct {
+	t TestingT
+}
+
+// New makes a new Assertions object for the specified TestingT.
+func New(t TestingT) *Assertions {
+	return &Assertions{
+		t: t,
+	}
+}
+
+//go:generate go run ../_codegen/main.go -output-package=assert -template=assertion_forward.go.tmpl -include-format-funcs

vendor/github.com/stretchr/testify/assert/forward_assertions_test.go

@@ -0,0 +1,611 @@
+package assert
+
+import (
+	"errors"
+	"regexp"
+	"testing"
+	"time"
+)
+
+func TestImplementsWrapper(t *testing.T) {
+	assert := New(new(testing.T))
+
+	if !assert.Implements((*AssertionTesterInterface)(nil), new(AssertionTesterConformingObject)) {
+		t.Error("Implements method should return true: AssertionTesterConformingObject implements AssertionTesterInterface")
+	}
+	if assert.Implements((*AssertionTesterInterface)(nil), new(AssertionTesterNonConformingObject)) {
+		t.Error("Implements method should return false: AssertionTesterNonConformingObject does not implements AssertionTesterInterface")
+	}
+}
+
+func TestIsTypeWrapper(t *testing.T) {
+	assert := New(new(testing.T))
+
+	if !assert.IsType(new(AssertionTesterConformingObject), new(AssertionTesterConformingObject)) {
+		t.Error("IsType should return true: AssertionTesterConformingObject is the same type as AssertionTesterConformingObject")
+	}
+	if assert.IsType(new(AssertionTesterConformingObject), new(AssertionTesterNonConformingObject)) {
+		t.Error("IsType should return false: AssertionTesterConformingObject is not the same type as AssertionTesterNonConformingObject")
+	}
+
+}
+
+func TestEqualWrapper(t *testing.T) {
+	assert := New(new(testing.T))
+
+	if !assert.Equal("Hello World", "Hello World") {
+		t.Error("Equal should return true")
+	}
+	if !assert.Equal(123, 123) {
+		t.Error("Equal should return true")
+	}
+	if !assert.Equal(123.5, 123.5) {
+		t.Error("Equal should return true")
+	}
+	if !assert.Equal([]byte("Hello World"), []byte("Hello World")) {
+		t.Error("Equal should return true")
+	}
+	if !assert.Equal(nil, nil) {
+		t.Error("Equal should return true")
+	}
+}
+
+func TestEqualValuesWrapper(t *testing.T) {
+	assert := New(new(testing.T))
+
+	if !assert.EqualValues(uint32(10), int32(10)) {
+		t.Error("EqualValues should return true")
+	}
+}
+
+func TestNotNilWrapper(t *testing.T) {
+	assert := New(new(testing.T))
+
+	if !assert.NotNil(new(AssertionTesterConformingObject)) {
+		t.Error("NotNil should return true: object is not nil")
+	}
+	if assert.NotNil(nil) {
+		t.Error("NotNil should return false: object is nil")
+	}
+
+}
+
+func TestNilWrapper(t *testing.T) {
+	assert := New(new(testing.T))
+
+	if !assert.Nil(nil) {
+		t.Error("Nil should return true: object is nil")
+	}
+	if assert.Nil(new(AssertionTesterConformingObject)) {
+		t.Error("Nil should return false: object is not nil")
+	}
+
+}
+
+func TestTrueWrapper(t *testing.T) {
+	assert := New(new(testing.T))
+
+	if !assert.True(true) {
+		t.Error("True should return true")
+	}
+	if assert.True(false) {
+		t.Error("True should return false")
+	}
+
+}
+
+func TestFalseWrapper(t *testing.T) {
+	assert := New(new(testing.T))
+
+	if !assert.False(false) {
+		t.Error("False should return true")
+	}
+	if assert.False(true) {
+		t.Error("False should return false")
+	}
+
+}
+
+func TestExactlyWrapper(t *testing.T) {
+	assert := New(new(testing.T))
+
+	a := float32(1)
+	b := float64(1)
+	c := float32(1)
+	d := float32(2)
+
+	if assert.Exactly(a, b) {
+		t.Error("Exactly should return false")
+	}
+	if assert.Exactly(a, d) {
+		t.Error("Exactly should return false")
+	}
+	if !assert.Exactly(a, c) {
+		t.Error("Exactly should return true")
+	}
+
+	if assert.Exactly(nil, a) {
+		t.Error("Exactly should return false")
+	}
+	if assert.Exactly(a, nil) {
+		t.Error("Exactly should return false")
+	}
+
+}
+
+func TestNotEqualWrapper(t *testing.T) {
+
+	assert := New(new(testing.T))
+
+	if !assert.NotEqual("Hello World", "Hello World!") {
+		t.Error("NotEqual should return true")
+	}
+	if !assert.NotEqual(123, 1234) {
+		t.Error("NotEqual should return true")
+	}
+	if !assert.NotEqual(123.5, 123.55) {
+		t.Error("NotEqual should return true")
+	}
+	if !assert.NotEqual([]byte("Hello World"), []byte("Hello World!")) {
+		t.Error("NotEqual should return true")
+	}
+	if !assert.NotEqual(nil, new(AssertionTesterConformingObject)) {
+		t.Error("NotEqual should return true")
+	}
+}
+
+func TestContainsWrapper(t *testing.T) {
+
+	assert := New(new(testing.T))
+	list := []string{"Foo", "Bar"}
+
+	if !assert.Contains("Hello World", "Hello") {
+		t.Error("Contains should return true: \"Hello World\" contains \"Hello\"")
+	}
+	if assert.Contains("Hello World", "Salut") {
+		t.Error("Contains should return false: \"Hello World\" does not contain \"Salut\"")
+	}
+
+	if !assert.Contains(list, "Foo") {
+		t.Error("Contains should return true: \"[\"Foo\", \"Bar\"]\" contains \"Foo\"")
+	}
+	if assert.Contains(list, "Salut") {
+		t.Error("Contains should return false: \"[\"Foo\", \"Bar\"]\" does not contain \"Salut\"")
+	}
+
+}
+
+func TestNotContainsWrapper(t *testing.T) {
+
+	assert := New(new(testing.T))
+	list := []string{"Foo", "Bar"}
+
+	if !assert.NotContains("Hello World", "Hello!") {
+		t.Error("NotContains should return true: \"Hello World\" does not contain \"Hello!\"")
+	}
+	if assert.NotContains("Hello World", "Hello") {
+		t.Error("NotContains should return false: \"Hello World\" contains \"Hello\"")
+	}
+
+	if !assert.NotContains(list, "Foo!") {
+		t.Error("NotContains should return true: \"[\"Foo\", \"Bar\"]\" does not contain \"Foo!\"")
+	}
+	if assert.NotContains(list, "Foo") {
+		t.Error("NotContains should return false: \"[\"Foo\", \"Bar\"]\" contains \"Foo\"")
+	}
+
+}
+
+func TestConditionWrapper(t *testing.T) {
+
+	assert := New(new(testing.T))
+
+	if !assert.Condition(func() bool { return true }, "Truth") {
+		t.Error("Condition should return true")
+	}
+
+	if assert.Condition(func() bool { return false }, "Lie") {
+		t.Error("Condition should return false")
+	}
+
+}
+
+func TestDidPanicWrapper(t *testing.T) {
+
+	if funcDidPanic, _ := didPanic(func() {
+		panic("Panic!")
+	}); !funcDidPanic {
+		t.Error("didPanic should return true")
+	}
+
+	if funcDidPanic, _ := didPanic(func() {
+	}); funcDidPanic {
+		t.Error("didPanic should return false")
+	}
+
+}
+
+func TestPanicsWrapper(t *testing.T) {
+
+	assert := New(new(testing.T))
+
+	if !assert.Panics(func() {
+		panic("Panic!")
+	}) {
+		t.Error("Panics should return true")
+	}
+
+	if assert.Panics(func() {
+	}) {
+		t.Error("Panics should return false")
+	}
+
+}
+
+func TestNotPanicsWrapper(t *testing.T) {
+
+	assert := New(new(testing.T))
+
+	if !assert.NotPanics(func() {
+	}) {
+		t.Error("NotPanics should return true")
+	}
+
+	if assert.NotPanics(func() {
+		panic("Panic!")
+	}) {
+		t.Error("NotPanics should return false")
+	}
+
+}
+
+func TestNoErrorWrapper(t *testing.T) {
+	assert := New(t)
+	mockAssert := New(new(testing.T))
+
+	// start with a nil error
+	var err error
+
+	assert.True(mockAssert.NoError(err), "NoError should return True for nil arg")
+
+	// now set an error
+	err = errors.New("Some error")
+
+	assert.False(mockAssert.NoError(err), "NoError with error should return False")
+
+}
+
+func TestErrorWrapper(t *testing.T) {
+	assert := New(t)
+	mockAssert := New(new(testing.T))
+
+	// start with a nil error
+	var err error
+
+	assert.False(mockAssert.Error(err), "Error should return False for nil arg")
+
+	// now set an error
+	err = errors.New("Some error")
+
+	assert.True(mockAssert.Error(err), "Error with error should return True")
+
+}
+
+func TestEqualErrorWrapper(t *testing.T) {
+	assert := New(t)
+	mockAssert := New(new(testing.T))
+
+	// start with a nil error
+	var err error
+	assert.False(mockAssert.EqualError(err, ""),
+		"EqualError should return false for nil arg")
+
+	// now set an error
+	err = errors.New("some error")
+	assert.False(mockAssert.EqualError(err, "Not some error"),
+		"EqualError should return false for different error string")
+	assert.True(mockAssert.EqualError(err, "some error"),
+		"EqualError should return true")
+}
+
+func TestEmptyWrapper(t *testing.T) {
+	assert := New(t)
+	mockAssert := New(new(testing.T))
+
+	assert.True(mockAssert.Empty(""), "Empty string is empty")
+	assert.True(mockAssert.Empty(nil), "Nil is empty")
+	assert.True(mockAssert.Empty([]string{}), "Empty string array is empty")
+	assert.True(mockAssert.Empty(0), "Zero int value is empty")
+	assert.True(mockAssert.Empty(false), "False value is empty")
+
+	assert.False(mockAssert.Empty("something"), "Non Empty string is not empty")
+	assert.False(mockAssert.Empty(errors.New("something")), "Non nil object is not empty")
+	assert.False(mockAssert.Empty([]string{"something"}), "Non empty string array is not empty")
+	assert.False(mockAssert.Empty(1), "Non-zero int value is not empty")
+	assert.False(mockAssert.Empty(true), "True value is not empty")
+
+}
+
+func TestNotEmptyWrapper(t *testing.T) {
+	assert := New(t)
+	mockAssert := New(new(testing.T))
+
+	assert.False(mockAssert.NotEmpty(""), "Empty string is empty")
+	assert.False(mockAssert.NotEmpty(nil), "Nil is empty")
+	assert.False(mockAssert.NotEmpty([]string{}), "Empty string array is empty")
+	assert.False(mockAssert.NotEmpty(0), "Zero int value is empty")
+	assert.False(mockAssert.NotEmpty(false), "False value is empty")
+
+	assert.True(mockAssert.NotEmpty("something"), "Non Empty string is not empty")
+	assert.True(mockAssert.NotEmpty(errors.New("something")), "Non nil object is not empty")
+	assert.True(mockAssert.NotEmpty([]string{"something"}), "Non empty string array is not empty")
+	assert.True(mockAssert.NotEmpty(1), "Non-zero int value is not empty")
+	assert.True(mockAssert.NotEmpty(true), "True value is not empty")
+
+}
+
+func TestLenWrapper(t *testing.T) {
+	assert := New(t)
+	mockAssert := New(new(testing.T))
+
+	assert.False(mockAssert.Len(nil, 0), "nil does not have length")
+	assert.False(mockAssert.Len(0, 0), "int does not have length")
+	assert.False(mockAssert.Len(true, 0), "true does not have length")
+	assert.False(mockAssert.Len(false, 0), "false does not have length")
+	assert.False(mockAssert.Len('A', 0), "Rune does not have length")
+	assert.False(mockAssert.Len(struct{}{}, 0), "Struct does not have length")
+
+	ch := make(chan int, 5)
+	ch <- 1
+	ch <- 2
+	ch <- 3
+
+	cases := []struct {
+		v interface{}
+		l int
+	}{
+		{[]int{1, 2, 3}, 3},
+		{[...]int{1, 2, 3}, 3},
+		{"ABC", 3},
+		{map[int]int{1: 2, 2: 4, 3: 6}, 3},
+		{ch, 3},
+
+		{[]int{}, 0},
+		{map[int]int{}, 0},
+		{make(chan int), 0},
+
+		{[]int(nil), 0},
+		{map[int]int(nil), 0},
+		{(chan int)(nil), 0},
+	}
+
+	for _, c := range cases {
+		assert.True(mockAssert.Len(c.v, c.l), "%#v have %d items", c.v, c.l)
+	}
+}
+
+func TestWithinDurationWrapper(t *testing.T) {
+	assert := New(t)
+	mockAssert := New(new(testing.T))
+	a := time.Now()
+	b := a.Add(10 * time.Second)
+
+	assert.True(mockAssert.WithinDuration(a, b, 10*time.Second), "A 10s difference is within a 10s time difference")
+	assert.True(mockAssert.WithinDuration(b, a, 10*time.Second), "A 10s difference is within a 10s time difference")
+
+	assert.False(mockAssert.WithinDuration(a, b, 9*time.Second), "A 10s difference is not within a 9s time difference")
+	assert.False(mockAssert.WithinDuration(b, a, 9*time.Second), "A 10s difference is not within a 9s time difference")
+
+	assert.False(mockAssert.WithinDuration(a, b, -9*time.Second), "A 10s difference is not within a 9s time difference")
+	assert.False(mockAssert.WithinDuration(b, a, -9*time.Second), "A 10s difference is not within a 9s time difference")
+
+	assert.False(mockAssert.WithinDuration(a, b, -11*time.Second), "A 10s difference is not within a 9s time difference")
+	assert.False(mockAssert.WithinDuration(b, a, -11*time.Second), "A 10s difference is not within a 9s time difference")
+}
+
+func TestInDeltaWrapper(t *testing.T) {
+	assert := New(new(testing.T))
+
+	True(t, assert.InDelta(1.001, 1, 0.01), "|1.001 - 1| <= 0.01")
+	True(t, assert.InDelta(1, 1.001, 0.01), "|1 - 1.001| <= 0.01")
+	True(t, assert.InDelta(1, 2, 1), "|1 - 2| <= 1")
+	False(t, assert.InDelta(1, 2, 0.5), "Expected |1 - 2| <= 0.5 to fail")
+	False(t, assert.InDelta(2, 1, 0.5), "Expected |2 - 1| <= 0.5 to fail")
+	False(t, assert.InDelta("", nil, 1), "Expected non numerals to fail")
+
+	cases := []struct {
+		a, b  interface{}
+		delta float64
+	}{
+		{uint8(2), uint8(1), 1},
+		{uint16(2), uint16(1), 1},
+		{uint32(2), uint32(1), 1},
+		{uint64(2), uint64(1), 1},
+
+		{int(2), int(1), 1},
+		{int8(2), int8(1), 1},
+		{int16(2), int16(1), 1},
+		{int32(2), int32(1), 1},
+		{int64(2), int64(1), 1},
+
+		{float32(2), float32(1), 1},
+		{float64(2), float64(1), 1},
+	}
+
+	for _, tc := range cases {
+		True(t, assert.InDelta(tc.a, tc.b, tc.delta), "Expected |%V - %V| <= %v", tc.a, tc.b, tc.delta)
+	}
+}
+
+func TestInEpsilonWrapper(t *testing.T) {
+	assert := New(new(testing.T))
+
+	cases := []struct {
+		a, b    interface{}
+		epsilon float64
+	}{
+		{uint8(2), uint16(2), .001},
+		{2.1, 2.2, 0.1},
+		{2.2, 2.1, 0.1},
+		{-2.1, -2.2, 0.1},
+		{-2.2, -2.1, 0.1},
+		{uint64(100), uint8(101), 0.01},
+		{0.1, -0.1, 2},
+	}
+
+	for _, tc := range cases {
+		True(t, assert.InEpsilon(tc.a, tc.b, tc.epsilon, "Expected %V and %V to have a relative difference of %v", tc.a, tc.b, tc.epsilon))
+	}
+
+	cases = []struct {
+		a, b    interface{}
+		epsilon float64
+	}{
+		{uint8(2), int16(-2), .001},
+		{uint64(100), uint8(102), 0.01},
+		{2.1, 2.2, 0.001},
+		{2.2, 2.1, 0.001},
+		{2.1, -2.2, 1},
+		{2.1, "bla-bla", 0},
+		{0.1, -0.1, 1.99},
+	}
+
+	for _, tc := range cases {
+		False(t, assert.InEpsilon(tc.a, tc.b, tc.epsilon, "Expected %V and %V to have a relative difference of %v", tc.a, tc.b, tc.epsilon))
+	}
+}
+
+func TestRegexpWrapper(t *testing.T) {
+
+	assert := New(new(testing.T))
+
+	cases := []struct {
+		rx, str string
+	}{
+		{"^start", "start of the line"},
+		{"end$", "in the end"},
+		{"[0-9]{3}[.-]?[0-9]{2}[.-]?[0-9]{2}", "My phone number is 650.12.34"},
+	}
+
+	for _, tc := range cases {
+		True(t, assert.Regexp(tc.rx, tc.str))
+		True(t, assert.Regexp(regexp.MustCompile(tc.rx), tc.str))
+		False(t, assert.NotRegexp(tc.rx, tc.str))
+		False(t, assert.NotRegexp(regexp.MustCompile(tc.rx), tc.str))
+	}
+
+	cases = []struct {
+		rx, str string
+	}{
+		{"^asdfastart", "Not the start of the line"},
+		{"end$", "in the end."},
+		{"[0-9]{3}[.-]?[0-9]{2}[.-]?[0-9]{2}", "My phone number is 650.12a.34"},
+	}
+
+	for _, tc := range cases {
+		False(t, assert.Regexp(tc.rx, tc.str), "Expected \"%s\" to not match \"%s\"", tc.rx, tc.str)
+		False(t, assert.Regexp(regexp.MustCompile(tc.rx), tc.str))
+		True(t, assert.NotRegexp(tc.rx, tc.str))
+		True(t, assert.NotRegexp(regexp.MustCompile(tc.rx), tc.str))
+	}
+}
+
+func TestZeroWrapper(t *testing.T) {
+	assert := New(t)
+	mockAssert := New(new(testing.T))
+
+	for _, test := range zeros {
+		assert.True(mockAssert.Zero(test), "Zero should return true for %v", test)
+	}
+
+	for _, test := range nonZeros {
+		assert.False(mockAssert.Zero(test), "Zero should return false for %v", test)
+	}
+}
+
+func TestNotZeroWrapper(t *testing.T) {
+	assert := New(t)
+	mockAssert := New(new(testing.T))
+
+	for _, test := range zeros {
+		assert.False(mockAssert.NotZero(test), "Zero should return true for %v", test)
+	}
+
+	for _, test := range nonZeros {
+		assert.True(mockAssert.NotZero(test), "Zero should return false for %v", test)
+	}
+}
+
+func TestJSONEqWrapper_EqualSONString(t *testing.T) {
+	assert := New(new(testing.T))
+	if !assert.JSONEq(`{"hello": "world", "foo": "bar"}`, `{"hello": "world", "foo": "bar"}`) {
+		t.Error("JSONEq should return true")
+	}
+
+}
+
+func TestJSONEqWrapper_EquivalentButNotEqual(t *testing.T) {
+	assert := New(new(testing.T))
+	if !assert.JSONEq(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`) {
+		t.Error("JSONEq should return true")
+	}
+
+}
+
+func TestJSONEqWrapper_HashOfArraysAndHashes(t *testing.T) {
+	assert := New(new(testing.T))
+	if !assert.JSONEq("{\r\n\t\"numeric\": 1.5,\r\n\t\"array\": [{\"foo\": \"bar\"}, 1, \"string\", [\"nested\", \"array\", 5.5]],\r\n\t\"hash\": {\"nested\": \"hash\", \"nested_slice\": [\"this\", \"is\", \"nested\"]},\r\n\t\"string\": \"foo\"\r\n}",
+		"{\r\n\t\"numeric\": 1.5,\r\n\t\"hash\": {\"nested\": \"hash\", \"nested_slice\": [\"this\", \"is\", \"nested\"]},\r\n\t\"string\": \"foo\",\r\n\t\"array\": [{\"foo\": \"bar\"}, 1, \"string\", [\"nested\", \"array\", 5.5]]\r\n}") {
+		t.Error("JSONEq should return true")
+	}
+}
+
+func TestJSONEqWrapper_Array(t *testing.T) {
+	assert := New(new(testing.T))
+	if !assert.JSONEq(`["foo", {"hello": "world", "nested": "hash"}]`, `["foo", {"nested": "hash", "hello": "world"}]`) {
+		t.Error("JSONEq should return true")
+	}
+
+}
+
+func TestJSONEqWrapper_HashAndArrayNotEquivalent(t *testing.T) {
+	assert := New(new(testing.T))
+	if assert.JSONEq(`["foo", {"hello": "world", "nested": "hash"}]`, `{"foo": "bar", {"nested": "hash", "hello": "world"}}`) {
+		t.Error("JSONEq should return false")
+	}
+}
+
+func TestJSONEqWrapper_HashesNotEquivalent(t *testing.T) {
+	assert := New(new(testing.T))
+	if assert.JSONEq(`{"foo": "bar"}`, `{"foo": "bar", "hello": "world"}`) {
+		t.Error("JSONEq should return false")
+	}
+}
+
+func TestJSONEqWrapper_ActualIsNotJSON(t *testing.T) {
+	assert := New(new(testing.T))
+	if assert.JSONEq(`{"foo": "bar"}`, "Not JSON") {
+		t.Error("JSONEq should return false")
+	}
+}
+
+func TestJSONEqWrapper_ExpectedIsNotJSON(t *testing.T) {
+	assert := New(new(testing.T))
+	if assert.JSONEq("Not JSON", `{"foo": "bar", "hello": "world"}`) {
+		t.Error("JSONEq should return false")
+	}
+}
+
+func TestJSONEqWrapper_ExpectedAndActualNotJSON(t *testing.T) {
+	assert := New(new(testing.T))
+	if assert.JSONEq("Not JSON", "Not JSON") {
+		t.Error("JSONEq should return false")
+	}
+}
+
+func TestJSONEqWrapper_ArraysOfDifferentOrder(t *testing.T) {
+	assert := New(new(testing.T))
+	if assert.JSONEq(`["foo", {"hello": "world", "nested": "hash"}]`, `[{ "hello": "world", "nested": "hash"}, "foo"]`) {
+		t.Error("JSONEq should return false")
+	}
+}

vendor/github.com/stretchr/testify/assert/http_assertions.go

@@ -0,0 +1,127 @@
+package assert
+
+import (
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strings"
+)
+
+// httpCode is a helper that returns HTTP code of the response. It returns -1 and
+// an error if building a new request fails.
+func httpCode(handler http.HandlerFunc, method, url string, values url.Values) (int, error) {
+	w := httptest.NewRecorder()
+	req, err := http.NewRequest(method, url+"?"+values.Encode(), nil)
+	if err != nil {
+		return -1, err
+	}
+	handler(w, req)
+	return w.Code, nil
+}
+
+// HTTPSuccess asserts that a specified handler returns a success status code.
+//
+//  assert.HTTPSuccess(t, myHandler, "POST", "http://www.google.com", nil)
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPSuccess(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, msgAndArgs ...interface{}) bool {
+	code, err := httpCode(handler, method, url, values)
+	if err != nil {
+		Fail(t, fmt.Sprintf("Failed to build test request, got error: %s", err))
+		return false
+	}
+
+	isSuccessCode := code >= http.StatusOK && code <= http.StatusPartialContent
+	if !isSuccessCode {
+		Fail(t, fmt.Sprintf("Expected HTTP success status code for %q but received %d", url+"?"+values.Encode(), code))
+	}
+
+	return isSuccessCode
+}
+
+// HTTPRedirect asserts that a specified handler returns a redirect status code.
+//
+//  assert.HTTPRedirect(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPRedirect(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, msgAndArgs ...interface{}) bool {
+	code, err := httpCode(handler, method, url, values)
+	if err != nil {
+		Fail(t, fmt.Sprintf("Failed to build test request, got error: %s", err))
+		return false
+	}
+
+	isRedirectCode := code >= http.StatusMultipleChoices && code <= http.StatusTemporaryRedirect
+	if !isRedirectCode {
+		Fail(t, fmt.Sprintf("Expected HTTP redirect status code for %q but received %d", url+"?"+values.Encode(), code))
+	}
+
+	return isRedirectCode
+}
+
+// HTTPError asserts that a specified handler returns an error status code.
+//
+//  assert.HTTPError(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPError(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, msgAndArgs ...interface{}) bool {
+	code, err := httpCode(handler, method, url, values)
+	if err != nil {
+		Fail(t, fmt.Sprintf("Failed to build test request, got error: %s", err))
+		return false
+	}
+
+	isErrorCode := code >= http.StatusBadRequest
+	if !isErrorCode {
+		Fail(t, fmt.Sprintf("Expected HTTP error status code for %q but received %d", url+"?"+values.Encode(), code))
+	}
+
+	return isErrorCode
+}
+
+// HTTPBody is a helper that returns HTTP body of the response. It returns
+// empty string if building a new request fails.
+func HTTPBody(handler http.HandlerFunc, method, url string, values url.Values) string {
+	w := httptest.NewRecorder()
+	req, err := http.NewRequest(method, url+"?"+values.Encode(), nil)
+	if err != nil {
+		return ""
+	}
+	handler(w, req)
+	return w.Body.String()
+}
+
+// HTTPBodyContains asserts that a specified handler returns a
+// body that contains a string.
+//
+//  assert.HTTPBodyContains(t, myHandler, "www.google.com", nil, "I'm Feeling Lucky")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPBodyContains(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool {
+	body := HTTPBody(handler, method, url, values)
+
+	contains := strings.Contains(body, fmt.Sprint(str))
+	if !contains {
+		Fail(t, fmt.Sprintf("Expected response body for \"%s\" to contain \"%s\" but found \"%s\"", url+"?"+values.Encode(), str, body))
+	}
+
+	return contains
+}
+
+// HTTPBodyNotContains asserts that a specified handler returns a
+// body that does not contain a string.
+//
+//  assert.HTTPBodyNotContains(t, myHandler, "www.google.com", nil, "I'm Feeling Lucky")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPBodyNotContains(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool {
+	body := HTTPBody(handler, method, url, values)
+
+	contains := strings.Contains(body, fmt.Sprint(str))
+	if contains {
+		Fail(t, fmt.Sprintf("Expected response body for \"%s\" to NOT contain \"%s\" but found \"%s\"", url+"?"+values.Encode(), str, body))
+	}
+
+	return !contains
+}

vendor/github.com/stretchr/testify/assert/http_assertions_test.go

@@ -0,0 +1,117 @@
+package assert
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+	"testing"
+)
+
+func httpOK(w http.ResponseWriter, r *http.Request) {
+	w.WriteHeader(http.StatusOK)
+}
+
+func httpRedirect(w http.ResponseWriter, r *http.Request) {
+	w.WriteHeader(http.StatusTemporaryRedirect)
+}
+
+func httpError(w http.ResponseWriter, r *http.Request) {
+	w.WriteHeader(http.StatusInternalServerError)
+}
+
+func TestHTTPSuccess(t *testing.T) {
+	assert := New(t)
+
+	mockT1 := new(testing.T)
+	assert.Equal(HTTPSuccess(mockT1, httpOK, "GET", "/", nil), true)
+	assert.False(mockT1.Failed())
+
+	mockT2 := new(testing.T)
+	assert.Equal(HTTPSuccess(mockT2, httpRedirect, "GET", "/", nil), false)
+	assert.True(mockT2.Failed())
+
+	mockT3 := new(testing.T)
+	assert.Equal(HTTPSuccess(mockT3, httpError, "GET", "/", nil), false)
+	assert.True(mockT3.Failed())
+}
+
+func TestHTTPRedirect(t *testing.T) {
+	assert := New(t)
+
+	mockT1 := new(testing.T)
+	assert.Equal(HTTPRedirect(mockT1, httpOK, "GET", "/", nil), false)
+	assert.True(mockT1.Failed())
+
+	mockT2 := new(testing.T)
+	assert.Equal(HTTPRedirect(mockT2, httpRedirect, "GET", "/", nil), true)
+	assert.False(mockT2.Failed())
+
+	mockT3 := new(testing.T)
+	assert.Equal(HTTPRedirect(mockT3, httpError, "GET", "/", nil), false)
+	assert.True(mockT3.Failed())
+}
+
+func TestHTTPError(t *testing.T) {
+	assert := New(t)
+
+	mockT1 := new(testing.T)
+	assert.Equal(HTTPError(mockT1, httpOK, "GET", "/", nil), false)
+	assert.True(mockT1.Failed())
+
+	mockT2 := new(testing.T)
+	assert.Equal(HTTPError(mockT2, httpRedirect, "GET", "/", nil), false)
+	assert.True(mockT2.Failed())
+
+	mockT3 := new(testing.T)
+	assert.Equal(HTTPError(mockT3, httpError, "GET", "/", nil), true)
+	assert.False(mockT3.Failed())
+}
+
+func TestHTTPStatusesWrapper(t *testing.T) {
+	assert := New(t)
+	mockAssert := New(new(testing.T))
+
+	assert.Equal(mockAssert.HTTPSuccess(httpOK, "GET", "/", nil), true)
+	assert.Equal(mockAssert.HTTPSuccess(httpRedirect, "GET", "/", nil), false)
+	assert.Equal(mockAssert.HTTPSuccess(httpError, "GET", "/", nil), false)
+
+	assert.Equal(mockAssert.HTTPRedirect(httpOK, "GET", "/", nil), false)
+	assert.Equal(mockAssert.HTTPRedirect(httpRedirect, "GET", "/", nil), true)
+	assert.Equal(mockAssert.HTTPRedirect(httpError, "GET", "/", nil), false)
+
+	assert.Equal(mockAssert.HTTPError(httpOK, "GET", "/", nil), false)
+	assert.Equal(mockAssert.HTTPError(httpRedirect, "GET", "/", nil), false)
+	assert.Equal(mockAssert.HTTPError(httpError, "GET", "/", nil), true)
+}
+
+func httpHelloName(w http.ResponseWriter, r *http.Request) {
+	name := r.FormValue("name")
+	w.Write([]byte(fmt.Sprintf("Hello, %s!", name)))
+}
+
+func TestHttpBody(t *testing.T) {
+	assert := New(t)
+	mockT := new(testing.T)
+
+	assert.True(HTTPBodyContains(mockT, httpHelloName, "GET", "/", url.Values{"name": []string{"World"}}, "Hello, World!"))
+	assert.True(HTTPBodyContains(mockT, httpHelloName, "GET", "/", url.Values{"name": []string{"World"}}, "World"))
+	assert.False(HTTPBodyContains(mockT, httpHelloName, "GET", "/", url.Values{"name": []string{"World"}}, "world"))
+
+	assert.False(HTTPBodyNotContains(mockT, httpHelloName, "GET", "/", url.Values{"name": []string{"World"}}, "Hello, World!"))
+	assert.False(HTTPBodyNotContains(mockT, httpHelloName, "GET", "/", url.Values{"name": []string{"World"}}, "World"))
+	assert.True(HTTPBodyNotContains(mockT, httpHelloName, "GET", "/", url.Values{"name": []string{"World"}}, "world"))
+}
+
+func TestHttpBodyWrappers(t *testing.T) {
+	assert := New(t)
+	mockAssert := New(new(testing.T))
+
+	assert.True(mockAssert.HTTPBodyContains(httpHelloName, "GET", "/", url.Values{"name": []string{"World"}}, "Hello, World!"))
+	assert.True(mockAssert.HTTPBodyContains(httpHelloName, "GET", "/", url.Values{"name": []string{"World"}}, "World"))
+	assert.False(mockAssert.HTTPBodyContains(httpHelloName, "GET", "/", url.Values{"name": []string{"World"}}, "world"))
+
+	assert.False(mockAssert.HTTPBodyNotContains(httpHelloName, "GET", "/", url.Values{"name": []string{"World"}}, "Hello, World!"))
+	assert.False(mockAssert.HTTPBodyNotContains(httpHelloName, "GET", "/", url.Values{"name": []string{"World"}}, "World"))
+	assert.True(mockAssert.HTTPBodyNotContains(httpHelloName, "GET", "/", url.Values{"name": []string{"World"}}, "world"))
+
+}

vendor/github.com/stretchr/testify/doc.go

@@ -0,0 +1,22 @@
+// Package testify is a set of packages that provide many tools for testifying that your code will behave as you intend.
+//
+// testify contains the following packages:
+//
+// The assert package provides a comprehensive set of assertion functions that tie in to the Go testing system.
+//
+// The http package contains tools to make it easier to test http activity using the Go testing system.
+//
+// The mock package provides a system by which it is possible to mock your objects and verify calls are happening as expected.
+//
+// The suite package provides a basic structure for using structs as testing suites, and methods on those structs as tests.  It includes setup/teardown functionality in the way of interfaces.
+package testify
+
+// blank imports help docs.
+import (
+	// assert package
+	_ "github.com/stretchr/testify/assert"
+	// http package
+	_ "github.com/stretchr/testify/http"
+	// mock package
+	_ "github.com/stretchr/testify/mock"
+)

vendor/github.com/stretchr/testify/http/doc.go

@@ -0,0 +1,2 @@
+// Package http DEPRECATED USE net/http/httptest
+package http

vendor/github.com/stretchr/testify/http/test_response_writer.go

@@ -0,0 +1,49 @@
+package http
+
+import (
+	"net/http"
+)
+
+// TestResponseWriter DEPRECATED: We recommend you use http://golang.org/pkg/net/http/httptest instead.
+type TestResponseWriter struct {
+
+	// StatusCode is the last int written by the call to WriteHeader(int)
+	StatusCode int
+
+	// Output is a string containing the written bytes using the Write([]byte) func.
+	Output string
+
+	// header is the internal storage of the http.Header object
+	header http.Header
+}
+
+// Header DEPRECATED: We recommend you use http://golang.org/pkg/net/http/httptest instead.
+func (rw *TestResponseWriter) Header() http.Header {
+
+	if rw.header == nil {
+		rw.header = make(http.Header)
+	}
+
+	return rw.header
+}
+
+// Write DEPRECATED: We recommend you use http://golang.org/pkg/net/http/httptest instead.
+func (rw *TestResponseWriter) Write(bytes []byte) (int, error) {
+
+	// assume 200 success if no header has been set
+	if rw.StatusCode == 0 {
+		rw.WriteHeader(200)
+	}
+
+	// add these bytes to the output string
+	rw.Output = rw.Output + string(bytes)
+
+	// return normal values
+	return 0, nil
+
+}
+
+// WriteHeader DEPRECATED: We recommend you use http://golang.org/pkg/net/http/httptest instead.
+func (rw *TestResponseWriter) WriteHeader(i int) {
+	rw.StatusCode = i
+}

vendor/github.com/stretchr/testify/http/test_round_tripper.go

@@ -0,0 +1,17 @@
+package http
+
+import (
+	"github.com/stretchr/testify/mock"
+	"net/http"
+)
+
+// TestRoundTripper DEPRECATED USE net/http/httptest
+type TestRoundTripper struct {
+	mock.Mock
+}
+
+// RoundTrip DEPRECATED USE net/http/httptest
+func (t *TestRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
+	args := t.Called(req)
+	return args.Get(0).(*http.Response), args.Error(1)
+}

vendor/github.com/stretchr/testify/mock/doc.go

@@ -0,0 +1,44 @@
+// Package mock provides a system by which it is possible to mock your objects
+// and verify calls are happening as expected.
+//
+// Example Usage
+//
+// The mock package provides an object, Mock, that tracks activity on another object.  It is usually
+// embedded into a test object as shown below:
+//
+//   type MyTestObject struct {
+//     // add a Mock object instance
+//     mock.Mock
+//
+//     // other fields go here as normal
+//   }
+//
+// When implementing the methods of an interface, you wire your functions up
+// to call the Mock.Called(args...) method, and return the appropriate values.
+//
+// For example, to mock a method that saves the name and age of a person and returns
+// the year of their birth or an error, you might write this:
+//
+//     func (o *MyTestObject) SavePersonDetails(firstname, lastname string, age int) (int, error) {
+//       args := o.Called(firstname, lastname, age)
+//       return args.Int(0), args.Error(1)
+//     }
+//
+// The Int, Error and Bool methods are examples of strongly typed getters that take the argument
+// index position. Given this argument list:
+//
+//     (12, true, "Something")
+//
+// You could read them out strongly typed like this:
+//
+//     args.Int(0)
+//     args.Bool(1)
+//     args.String(2)
+//
+// For objects of your own type, use the generic Arguments.Get(index) method and make a type assertion:
+//
+//     return args.Get(0).(*MyObject), args.Get(1).(*AnotherObjectOfMine)
+//
+// This may cause a panic if the object you are getting is nil (the type assertion will fail), in those
+// cases you should check for nil first.
+package mock

vendor/github.com/stretchr/testify/mock/mock.go

@@ -0,0 +1,815 @@
+package mock
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"regexp"
+	"runtime"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/davecgh/go-spew/spew"
+	"github.com/pmezard/go-difflib/difflib"
+	"github.com/stretchr/objx"
+	"github.com/stretchr/testify/assert"
+)
+
+// TestingT is an interface wrapper around *testing.T
+type TestingT interface {
+	Logf(format string, args ...interface{})
+	Errorf(format string, args ...interface{})
+	FailNow()
+}
+
+/*
+	Call
+*/
+
+// Call represents a method call and is used for setting expectations,
+// as well as recording activity.
+type Call struct {
+	Parent *Mock
+
+	// The name of the method that was or will be called.
+	Method string
+
+	// Holds the arguments of the method.
+	Arguments Arguments
+
+	// Holds the arguments that should be returned when
+	// this method is called.
+	ReturnArguments Arguments
+
+	// The number of times to return the return arguments when setting
+	// expectations. 0 means to always return the value.
+	Repeatability int
+
+	// Amount of times this call has been called
+	totalCalls int
+
+	// Call to this method can be optional
+	optional bool
+
+	// Holds a channel that will be used to block the Return until it either
+	// receives a message or is closed. nil means it returns immediately.
+	WaitFor <-chan time.Time
+
+	waitTime time.Duration
+
+	// Holds a handler used to manipulate arguments content that are passed by
+	// reference. It's useful when mocking methods such as unmarshalers or
+	// decoders.
+	RunFn func(Arguments)
+}
+
+func newCall(parent *Mock, methodName string, methodArguments ...interface{}) *Call {
+	return &Call{
+		Parent:          parent,
+		Method:          methodName,
+		Arguments:       methodArguments,
+		ReturnArguments: make([]interface{}, 0),
+		Repeatability:   0,
+		WaitFor:         nil,
+		RunFn:           nil,
+	}
+}
+
+func (c *Call) lock() {
+	c.Parent.mutex.Lock()
+}
+
+func (c *Call) unlock() {
+	c.Parent.mutex.Unlock()
+}
+
+// Return specifies the return arguments for the expectation.
+//
+//    Mock.On("DoSomething").Return(errors.New("failed"))
+func (c *Call) Return(returnArguments ...interface{}) *Call {
+	c.lock()
+	defer c.unlock()
+
+	c.ReturnArguments = returnArguments
+
+	return c
+}
+
+// Once indicates that that the mock should only return the value once.
+//
+//    Mock.On("MyMethod", arg1, arg2).Return(returnArg1, returnArg2).Once()
+func (c *Call) Once() *Call {
+	return c.Times(1)
+}
+
+// Twice indicates that that the mock should only return the value twice.
+//
+//    Mock.On("MyMethod", arg1, arg2).Return(returnArg1, returnArg2).Twice()
+func (c *Call) Twice() *Call {
+	return c.Times(2)
+}
+
+// Times indicates that that the mock should only return the indicated number
+// of times.
+//
+//    Mock.On("MyMethod", arg1, arg2).Return(returnArg1, returnArg2).Times(5)
+func (c *Call) Times(i int) *Call {
+	c.lock()
+	defer c.unlock()
+	c.Repeatability = i
+	return c
+}
+
+// WaitUntil sets the channel that will block the mock's return until its closed
+// or a message is received.
+//
+//    Mock.On("MyMethod", arg1, arg2).WaitUntil(time.After(time.Second))
+func (c *Call) WaitUntil(w <-chan time.Time) *Call {
+	c.lock()
+	defer c.unlock()
+	c.WaitFor = w
+	return c
+}
+
+// After sets how long to block until the call returns
+//
+//    Mock.On("MyMethod", arg1, arg2).After(time.Second)
+func (c *Call) After(d time.Duration) *Call {
+	c.lock()
+	defer c.unlock()
+	c.waitTime = d
+	return c
+}
+
+// Run sets a handler to be called before returning. It can be used when
+// mocking a method such as unmarshalers that takes a pointer to a struct and
+// sets properties in such struct
+//
+//    Mock.On("Unmarshal", AnythingOfType("*map[string]interface{}").Return().Run(func(args Arguments) {
+//    	arg := args.Get(0).(*map[string]interface{})
+//    	arg["foo"] = "bar"
+//    })
+func (c *Call) Run(fn func(args Arguments)) *Call {
+	c.lock()
+	defer c.unlock()
+	c.RunFn = fn
+	return c
+}
+
+// Maybe allows the method call to be optional. Not calling an optional method
+// will not cause an error while asserting expectations
+func (c *Call) Maybe() *Call {
+	c.lock()
+	defer c.unlock()
+	c.optional = true
+	return c
+}
+
+// On chains a new expectation description onto the mocked interface. This
+// allows syntax like.
+//
+//    Mock.
+//       On("MyMethod", 1).Return(nil).
+//       On("MyOtherMethod", 'a', 'b', 'c').Return(errors.New("Some Error"))
+func (c *Call) On(methodName string, arguments ...interface{}) *Call {
+	return c.Parent.On(methodName, arguments...)
+}
+
+// Mock is the workhorse used to track activity on another object.
+// For an example of its usage, refer to the "Example Usage" section at the top
+// of this document.
+type Mock struct {
+	// Represents the calls that are expected of
+	// an object.
+	ExpectedCalls []*Call
+
+	// Holds the calls that were made to this mocked object.
+	Calls []Call
+
+	// TestData holds any data that might be useful for testing.  Testify ignores
+	// this data completely allowing you to do whatever you like with it.
+	testData objx.Map
+
+	mutex sync.Mutex
+}
+
+// TestData holds any data that might be useful for testing.  Testify ignores
+// this data completely allowing you to do whatever you like with it.
+func (m *Mock) TestData() objx.Map {
+
+	if m.testData == nil {
+		m.testData = make(objx.Map)
+	}
+
+	return m.testData
+}
+
+/*
+	Setting expectations
+*/
+
+// On starts a description of an expectation of the specified method
+// being called.
+//
+//     Mock.On("MyMethod", arg1, arg2)
+func (m *Mock) On(methodName string, arguments ...interface{}) *Call {
+	for _, arg := range arguments {
+		if v := reflect.ValueOf(arg); v.Kind() == reflect.Func {
+			panic(fmt.Sprintf("cannot use Func in expectations. Use mock.AnythingOfType(\"%T\")", arg))
+		}
+	}
+
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+	c := newCall(m, methodName, arguments...)
+	m.ExpectedCalls = append(m.ExpectedCalls, c)
+	return c
+}
+
+// /*
+// 	Recording and responding to activity
+// */
+
+func (m *Mock) findExpectedCall(method string, arguments ...interface{}) (int, *Call) {
+	for i, call := range m.ExpectedCalls {
+		if call.Method == method && call.Repeatability > -1 {
+
+			_, diffCount := call.Arguments.Diff(arguments)
+			if diffCount == 0 {
+				return i, call
+			}
+
+		}
+	}
+	return -1, nil
+}
+
+func (m *Mock) findClosestCall(method string, arguments ...interface{}) (bool, *Call) {
+	diffCount := 0
+	var closestCall *Call
+
+	for _, call := range m.expectedCalls() {
+		if call.Method == method {
+
+			_, tempDiffCount := call.Arguments.Diff(arguments)
+			if tempDiffCount < diffCount || diffCount == 0 {
+				diffCount = tempDiffCount
+				closestCall = call
+			}
+
+		}
+	}
+
+	if closestCall == nil {
+		return false, nil
+	}
+
+	return true, closestCall
+}
+
+func callString(method string, arguments Arguments, includeArgumentValues bool) string {
+
+	var argValsString string
+	if includeArgumentValues {
+		var argVals []string
+		for argIndex, arg := range arguments {
+			argVals = append(argVals, fmt.Sprintf("%d: %#v", argIndex, arg))
+		}
+		argValsString = fmt.Sprintf("\n\t\t%s", strings.Join(argVals, "\n\t\t"))
+	}
+
+	return fmt.Sprintf("%s(%s)%s", method, arguments.String(), argValsString)
+}
+
+// Called tells the mock object that a method has been called, and gets an array
+// of arguments to return.  Panics if the call is unexpected (i.e. not preceded by
+// appropriate .On .Return() calls)
+// If Call.WaitFor is set, blocks until the channel is closed or receives a message.
+func (m *Mock) Called(arguments ...interface{}) Arguments {
+	// get the calling function's name
+	pc, _, _, ok := runtime.Caller(1)
+	if !ok {
+		panic("Couldn't get the caller information")
+	}
+	functionPath := runtime.FuncForPC(pc).Name()
+	//Next four lines are required to use GCCGO function naming conventions.
+	//For Ex:  github_com_docker_libkv_store_mock.WatchTree.pN39_github_com_docker_libkv_store_mock.Mock
+	//uses interface information unlike golang github.com/docker/libkv/store/mock.(*Mock).WatchTree
+	//With GCCGO we need to remove interface information starting from pN<dd>.
+	re := regexp.MustCompile("\\.pN\\d+_")
+	if re.MatchString(functionPath) {
+		functionPath = re.Split(functionPath, -1)[0]
+	}
+	parts := strings.Split(functionPath, ".")
+	functionName := parts[len(parts)-1]
+	return m.MethodCalled(functionName, arguments...)
+}
+
+// MethodCalled tells the mock object that the given method has been called, and gets
+// an array of arguments to return. Panics if the call is unexpected (i.e. not preceded
+// by appropriate .On .Return() calls)
+// If Call.WaitFor is set, blocks until the channel is closed or receives a message.
+func (m *Mock) MethodCalled(methodName string, arguments ...interface{}) Arguments {
+	m.mutex.Lock()
+	found, call := m.findExpectedCall(methodName, arguments...)
+
+	if found < 0 {
+		// we have to fail here - because we don't know what to do
+		// as the return arguments.  This is because:
+		//
+		//   a) this is a totally unexpected call to this method,
+		//   b) the arguments are not what was expected, or
+		//   c) the developer has forgotten to add an accompanying On...Return pair.
+
+		closestFound, closestCall := m.findClosestCall(methodName, arguments...)
+		m.mutex.Unlock()
+
+		if closestFound {
+			panic(fmt.Sprintf("\n\nmock: Unexpected Method Call\n-----------------------------\n\n%s\n\nThe closest call I have is: \n\n%s\n\n%s\n", callString(methodName, arguments, true), callString(methodName, closestCall.Arguments, true), diffArguments(closestCall.Arguments, arguments)))
+		} else {
+			panic(fmt.Sprintf("\nassert: mock: I don't know what to return because the method call was unexpected.\n\tEither do Mock.On(\"%s\").Return(...) first, or remove the %s() call.\n\tThis method was unexpected:\n\t\t%s\n\tat: %s", methodName, methodName, callString(methodName, arguments, true), assert.CallerInfo()))
+		}
+	}
+
+	if call.Repeatability == 1 {
+		call.Repeatability = -1
+	} else if call.Repeatability > 1 {
+		call.Repeatability--
+	}
+	call.totalCalls++
+
+	// add the call
+	m.Calls = append(m.Calls, *newCall(m, methodName, arguments...))
+	m.mutex.Unlock()
+
+	// block if specified
+	if call.WaitFor != nil {
+		<-call.WaitFor
+	} else {
+		time.Sleep(call.waitTime)
+	}
+
+	m.mutex.Lock()
+	runFn := call.RunFn
+	m.mutex.Unlock()
+
+	if runFn != nil {
+		runFn(arguments)
+	}
+
+	m.mutex.Lock()
+	returnArgs := call.ReturnArguments
+	m.mutex.Unlock()
+
+	return returnArgs
+}
+
+/*
+	Assertions
+*/
+
+type assertExpectationser interface {
+	AssertExpectations(TestingT) bool
+}
+
+// AssertExpectationsForObjects asserts that everything specified with On and Return
+// of the specified objects was in fact called as expected.
+//
+// Calls may have occurred in any order.
+func AssertExpectationsForObjects(t TestingT, testObjects ...interface{}) bool {
+	for _, obj := range testObjects {
+		if m, ok := obj.(Mock); ok {
+			t.Logf("Deprecated mock.AssertExpectationsForObjects(myMock.Mock) use mock.AssertExpectationsForObjects(myMock)")
+			obj = &m
+		}
+		m := obj.(assertExpectationser)
+		if !m.AssertExpectations(t) {
+			return false
+		}
+	}
+	return true
+}
+
+// AssertExpectations asserts that everything specified with On and Return was
+// in fact called as expected.  Calls may have occurred in any order.
+func (m *Mock) AssertExpectations(t TestingT) bool {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+	var somethingMissing bool
+	var failedExpectations int
+
+	// iterate through each expectation
+	expectedCalls := m.expectedCalls()
+	for _, expectedCall := range expectedCalls {
+		if !expectedCall.optional && !m.methodWasCalled(expectedCall.Method, expectedCall.Arguments) && expectedCall.totalCalls == 0 {
+			somethingMissing = true
+			failedExpectations++
+			t.Logf("FAIL:\t%s(%s)", expectedCall.Method, expectedCall.Arguments.String())
+		} else {
+			if expectedCall.Repeatability > 0 {
+				somethingMissing = true
+				failedExpectations++
+				t.Logf("FAIL:\t%s(%s)", expectedCall.Method, expectedCall.Arguments.String())
+			} else {
+				t.Logf("PASS:\t%s(%s)", expectedCall.Method, expectedCall.Arguments.String())
+			}
+		}
+	}
+
+	if somethingMissing {
+		t.Errorf("FAIL: %d out of %d expectation(s) were met.\n\tThe code you are testing needs to make %d more call(s).\n\tat: %s", len(expectedCalls)-failedExpectations, len(expectedCalls), failedExpectations, assert.CallerInfo())
+	}
+
+	return !somethingMissing
+}
+
+// AssertNumberOfCalls asserts that the method was called expectedCalls times.
+func (m *Mock) AssertNumberOfCalls(t TestingT, methodName string, expectedCalls int) bool {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+	var actualCalls int
+	for _, call := range m.calls() {
+		if call.Method == methodName {
+			actualCalls++
+		}
+	}
+	return assert.Equal(t, expectedCalls, actualCalls, fmt.Sprintf("Expected number of calls (%d) does not match the actual number of calls (%d).", expectedCalls, actualCalls))
+}
+
+// AssertCalled asserts that the method was called.
+// It can produce a false result when an argument is a pointer type and the underlying value changed after calling the mocked method.
+func (m *Mock) AssertCalled(t TestingT, methodName string, arguments ...interface{}) bool {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+	if !assert.True(t, m.methodWasCalled(methodName, arguments), fmt.Sprintf("The \"%s\" method should have been called with %d argument(s), but was not.", methodName, len(arguments))) {
+		t.Logf("%v", m.expectedCalls())
+		return false
+	}
+	return true
+}
+
+// AssertNotCalled asserts that the method was not called.
+// It can produce a false result when an argument is a pointer type and the underlying value changed after calling the mocked method.
+func (m *Mock) AssertNotCalled(t TestingT, methodName string, arguments ...interface{}) bool {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+	if !assert.False(t, m.methodWasCalled(methodName, arguments), fmt.Sprintf("The \"%s\" method was called with %d argument(s), but should NOT have been.", methodName, len(arguments))) {
+		t.Logf("%v", m.expectedCalls())
+		return false
+	}
+	return true
+}
+
+func (m *Mock) methodWasCalled(methodName string, expected []interface{}) bool {
+	for _, call := range m.calls() {
+		if call.Method == methodName {
+
+			_, differences := Arguments(expected).Diff(call.Arguments)
+
+			if differences == 0 {
+				// found the expected call
+				return true
+			}
+
+		}
+	}
+	// we didn't find the expected call
+	return false
+}
+
+func (m *Mock) expectedCalls() []*Call {
+	return append([]*Call{}, m.ExpectedCalls...)
+}
+
+func (m *Mock) calls() []Call {
+	return append([]Call{}, m.Calls...)
+}
+
+/*
+	Arguments
+*/
+
+// Arguments holds an array of method arguments or return values.
+type Arguments []interface{}
+
+const (
+	// Anything is used in Diff and Assert when the argument being tested
+	// shouldn't be taken into consideration.
+	Anything string = "mock.Anything"
+)
+
+// AnythingOfTypeArgument is a string that contains the type of an argument
+// for use when type checking.  Used in Diff and Assert.
+type AnythingOfTypeArgument string
+
+// AnythingOfType returns an AnythingOfTypeArgument object containing the
+// name of the type to check for.  Used in Diff and Assert.
+//
+// For example:
+//	Assert(t, AnythingOfType("string"), AnythingOfType("int"))
+func AnythingOfType(t string) AnythingOfTypeArgument {
+	return AnythingOfTypeArgument(t)
+}
+
+// argumentMatcher performs custom argument matching, returning whether or
+// not the argument is matched by the expectation fixture function.
+type argumentMatcher struct {
+	// fn is a function which accepts one argument, and returns a bool.
+	fn reflect.Value
+}
+
+func (f argumentMatcher) Matches(argument interface{}) bool {
+	expectType := f.fn.Type().In(0)
+	expectTypeNilSupported := false
+	switch expectType.Kind() {
+	case reflect.Interface, reflect.Chan, reflect.Func, reflect.Map, reflect.Slice, reflect.Ptr:
+		expectTypeNilSupported = true
+	}
+
+	argType := reflect.TypeOf(argument)
+	var arg reflect.Value
+	if argType == nil {
+		arg = reflect.New(expectType).Elem()
+	} else {
+		arg = reflect.ValueOf(argument)
+	}
+
+	if argType == nil && !expectTypeNilSupported {
+		panic(errors.New("attempting to call matcher with nil for non-nil expected type"))
+	}
+	if argType == nil || argType.AssignableTo(expectType) {
+		result := f.fn.Call([]reflect.Value{arg})
+		return result[0].Bool()
+	}
+	return false
+}
+
+func (f argumentMatcher) String() string {
+	return fmt.Sprintf("func(%s) bool", f.fn.Type().In(0).Name())
+}
+
+// MatchedBy can be used to match a mock call based on only certain properties
+// from a complex struct or some calculation. It takes a function that will be
+// evaluated with the called argument and will return true when there's a match
+// and false otherwise.
+//
+// Example:
+// m.On("Do", MatchedBy(func(req *http.Request) bool { return req.Host == "example.com" }))
+//
+// |fn|, must be a function accepting a single argument (of the expected type)
+// which returns a bool. If |fn| doesn't match the required signature,
+// MatchedBy() panics.
+func MatchedBy(fn interface{}) argumentMatcher {
+	fnType := reflect.TypeOf(fn)
+
+	if fnType.Kind() != reflect.Func {
+		panic(fmt.Sprintf("assert: arguments: %s is not a func", fn))
+	}
+	if fnType.NumIn() != 1 {
+		panic(fmt.Sprintf("assert: arguments: %s does not take exactly one argument", fn))
+	}
+	if fnType.NumOut() != 1 || fnType.Out(0).Kind() != reflect.Bool {
+		panic(fmt.Sprintf("assert: arguments: %s does not return a bool", fn))
+	}
+
+	return argumentMatcher{fn: reflect.ValueOf(fn)}
+}
+
+// Get Returns the argument at the specified index.
+func (args Arguments) Get(index int) interface{} {
+	if index+1 > len(args) {
+		panic(fmt.Sprintf("assert: arguments: Cannot call Get(%d) because there are %d argument(s).", index, len(args)))
+	}
+	return args[index]
+}
+
+// Is gets whether the objects match the arguments specified.
+func (args Arguments) Is(objects ...interface{}) bool {
+	for i, obj := range args {
+		if obj != objects[i] {
+			return false
+		}
+	}
+	return true
+}
+
+// Diff gets a string describing the differences between the arguments
+// and the specified objects.
+//
+// Returns the diff string and number of differences found.
+func (args Arguments) Diff(objects []interface{}) (string, int) {
+
+	var output = "\n"
+	var differences int
+
+	var maxArgCount = len(args)
+	if len(objects) > maxArgCount {
+		maxArgCount = len(objects)
+	}
+
+	for i := 0; i < maxArgCount; i++ {
+		var actual, expected interface{}
+
+		if len(objects) <= i {
+			actual = "(Missing)"
+		} else {
+			actual = objects[i]
+		}
+
+		if len(args) <= i {
+			expected = "(Missing)"
+		} else {
+			expected = args[i]
+		}
+
+		if matcher, ok := expected.(argumentMatcher); ok {
+			if matcher.Matches(actual) {
+				output = fmt.Sprintf("%s\t%d: PASS:  %s matched by %s\n", output, i, actual, matcher)
+			} else {
+				differences++
+				output = fmt.Sprintf("%s\t%d: PASS:  %s not matched by %s\n", output, i, actual, matcher)
+			}
+		} else if reflect.TypeOf(expected) == reflect.TypeOf((*AnythingOfTypeArgument)(nil)).Elem() {
+
+			// type checking
+			if reflect.TypeOf(actual).Name() != string(expected.(AnythingOfTypeArgument)) && reflect.TypeOf(actual).String() != string(expected.(AnythingOfTypeArgument)) {
+				// not match
+				differences++
+				output = fmt.Sprintf("%s\t%d: FAIL:  type %s != type %s - %s\n", output, i, expected, reflect.TypeOf(actual).Name(), actual)
+			}
+
+		} else {
+
+			// normal checking
+
+			if assert.ObjectsAreEqual(expected, Anything) || assert.ObjectsAreEqual(actual, Anything) || assert.ObjectsAreEqual(actual, expected) {
+				// match
+				output = fmt.Sprintf("%s\t%d: PASS:  %s == %s\n", output, i, actual, expected)
+			} else {
+				// not match
+				differences++
+				output = fmt.Sprintf("%s\t%d: FAIL:  %s != %s\n", output, i, actual, expected)
+			}
+		}
+
+	}
+
+	if differences == 0 {
+		return "No differences.", differences
+	}
+
+	return output, differences
+
+}
+
+// Assert compares the arguments with the specified objects and fails if
+// they do not exactly match.
+func (args Arguments) Assert(t TestingT, objects ...interface{}) bool {
+
+	// get the differences
+	diff, diffCount := args.Diff(objects)
+
+	if diffCount == 0 {
+		return true
+	}
+
+	// there are differences... report them...
+	t.Logf(diff)
+	t.Errorf("%sArguments do not match.", assert.CallerInfo())
+
+	return false
+
+}
+
+// String gets the argument at the specified index. Panics if there is no argument, or
+// if the argument is of the wrong type.
+//
+// If no index is provided, String() returns a complete string representation
+// of the arguments.
+func (args Arguments) String(indexOrNil ...int) string {
+
+	if len(indexOrNil) == 0 {
+		// normal String() method - return a string representation of the args
+		var argsStr []string
+		for _, arg := range args {
+			argsStr = append(argsStr, fmt.Sprintf("%s", reflect.TypeOf(arg)))
+		}
+		return strings.Join(argsStr, ",")
+	} else if len(indexOrNil) == 1 {
+		// Index has been specified - get the argument at that index
+		var index = indexOrNil[0]
+		var s string
+		var ok bool
+		if s, ok = args.Get(index).(string); !ok {
+			panic(fmt.Sprintf("assert: arguments: String(%d) failed because object wasn't correct type: %s", index, args.Get(index)))
+		}
+		return s
+	}
+
+	panic(fmt.Sprintf("assert: arguments: Wrong number of arguments passed to String.  Must be 0 or 1, not %d", len(indexOrNil)))
+
+}
+
+// Int gets the argument at the specified index. Panics if there is no argument, or
+// if the argument is of the wrong type.
+func (args Arguments) Int(index int) int {
+	var s int
+	var ok bool
+	if s, ok = args.Get(index).(int); !ok {
+		panic(fmt.Sprintf("assert: arguments: Int(%d) failed because object wasn't correct type: %v", index, args.Get(index)))
+	}
+	return s
+}
+
+// Error gets the argument at the specified index. Panics if there is no argument, or
+// if the argument is of the wrong type.
+func (args Arguments) Error(index int) error {
+	obj := args.Get(index)
+	var s error
+	var ok bool
+	if obj == nil {
+		return nil
+	}
+	if s, ok = obj.(error); !ok {
+		panic(fmt.Sprintf("assert: arguments: Error(%d) failed because object wasn't correct type: %v", index, args.Get(index)))
+	}
+	return s
+}
+
+// Bool gets the argument at the specified index. Panics if there is no argument, or
+// if the argument is of the wrong type.
+func (args Arguments) Bool(index int) bool {
+	var s bool
+	var ok bool
+	if s, ok = args.Get(index).(bool); !ok {
+		panic(fmt.Sprintf("assert: arguments: Bool(%d) failed because object wasn't correct type: %v", index, args.Get(index)))
+	}
+	return s
+}
+
+func typeAndKind(v interface{}) (reflect.Type, reflect.Kind) {
+	t := reflect.TypeOf(v)
+	k := t.Kind()
+
+	if k == reflect.Ptr {
+		t = t.Elem()
+		k = t.Kind()
+	}
+	return t, k
+}
+
+func diffArguments(expected Arguments, actual Arguments) string {
+	if len(expected) != len(actual) {
+		return fmt.Sprintf("Provided %v arguments, mocked for %v arguments", len(expected), len(actual))
+	}
+
+	for x := range expected {
+		if diffString := diff(expected[x], actual[x]); diffString != "" {
+			return fmt.Sprintf("Difference found in argument %v:\n\n%s", x, diffString)
+		}
+	}
+
+	return ""
+}
+
+// diff returns a diff of both values as long as both are of the same type and
+// are a struct, map, slice or array. Otherwise it returns an empty string.
+func diff(expected interface{}, actual interface{}) string {
+	if expected == nil || actual == nil {
+		return ""
+	}
+
+	et, ek := typeAndKind(expected)
+	at, _ := typeAndKind(actual)
+
+	if et != at {
+		return ""
+	}
+
+	if ek != reflect.Struct && ek != reflect.Map && ek != reflect.Slice && ek != reflect.Array {
+		return ""
+	}
+
+	e := spewConfig.Sdump(expected)
+	a := spewConfig.Sdump(actual)
+
+	diff, _ := difflib.GetUnifiedDiffString(difflib.UnifiedDiff{
+		A:        difflib.SplitLines(e),
+		B:        difflib.SplitLines(a),
+		FromFile: "Expected",
+		FromDate: "",
+		ToFile:   "Actual",
+		ToDate:   "",
+		Context:  1,
+	})
+
+	return diff
+}
+
+var spewConfig = spew.ConfigState{
+	Indent:                  " ",
+	DisablePointerAddresses: true,
+	DisableCapacities:       true,
+	SortKeys:                true,
+}

vendor/github.com/stretchr/testify/package_test.go

@@ -0,0 +1,12 @@
+package testify
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestImports(t *testing.T) {
+	if assert.Equal(t, 1, 1) != true {
+		t.Error("Something is wrong.")
+	}
+}

vendor/github.com/stretchr/testify/require/doc.go

@@ -0,0 +1,28 @@
+// Package require implements the same assertions as the `assert` package but
+// stops test execution when a test fails.
+//
+// Example Usage
+//
+// The following is a complete example using require in a standard test function:
+//    import (
+//      "testing"
+//      "github.com/stretchr/testify/require"
+//    )
+//
+//    func TestSomething(t *testing.T) {
+//
+//      var a string = "Hello"
+//      var b string = "Hello"
+//
+//      require.Equal(t, a, b, "The two words should be the same.")
+//
+//    }
+//
+// Assertions
+//
+// The `require` package have same global functions as in the `assert` package,
+// but instead of returning a boolean result they call `t.FailNow()`.
+//
+// Every assertion function also takes an optional string message as the final argument,
+// allowing custom error messages to be appended to the message the assertion method outputs.
+package require

vendor/github.com/stretchr/testify/require/forward_requirements.go

@@ -0,0 +1,16 @@
+package require
+
+// Assertions provides assertion methods around the
+// TestingT interface.
+type Assertions struct {
+	t TestingT
+}
+
+// New makes a new Assertions object for the specified TestingT.
+func New(t TestingT) *Assertions {
+	return &Assertions{
+		t: t,
+	}
+}
+
+//go:generate go run ../_codegen/main.go -output-package=require -template=require_forward.go.tmpl -include-format-funcs

vendor/github.com/stretchr/testify/require/forward_requirements_test.go

@@ -0,0 +1,385 @@
+package require
+
+import (
+	"errors"
+	"testing"
+	"time"
+)
+
+func TestImplementsWrapper(t *testing.T) {
+	require := New(t)
+
+	require.Implements((*AssertionTesterInterface)(nil), new(AssertionTesterConformingObject))
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.Implements((*AssertionTesterInterface)(nil), new(AssertionTesterNonConformingObject))
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestIsTypeWrapper(t *testing.T) {
+	require := New(t)
+	require.IsType(new(AssertionTesterConformingObject), new(AssertionTesterConformingObject))
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.IsType(new(AssertionTesterConformingObject), new(AssertionTesterNonConformingObject))
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestEqualWrapper(t *testing.T) {
+	require := New(t)
+	require.Equal(1, 1)
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.Equal(1, 2)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestNotEqualWrapper(t *testing.T) {
+	require := New(t)
+	require.NotEqual(1, 2)
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.NotEqual(2, 2)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestExactlyWrapper(t *testing.T) {
+	require := New(t)
+
+	a := float32(1)
+	b := float32(1)
+	c := float64(1)
+
+	require.Exactly(a, b)
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.Exactly(a, c)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestNotNilWrapper(t *testing.T) {
+	require := New(t)
+	require.NotNil(t, new(AssertionTesterConformingObject))
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.NotNil(nil)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestNilWrapper(t *testing.T) {
+	require := New(t)
+	require.Nil(nil)
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.Nil(new(AssertionTesterConformingObject))
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestTrueWrapper(t *testing.T) {
+	require := New(t)
+	require.True(true)
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.True(false)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestFalseWrapper(t *testing.T) {
+	require := New(t)
+	require.False(false)
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.False(true)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestContainsWrapper(t *testing.T) {
+	require := New(t)
+	require.Contains("Hello World", "Hello")
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.Contains("Hello World", "Salut")
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestNotContainsWrapper(t *testing.T) {
+	require := New(t)
+	require.NotContains("Hello World", "Hello!")
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.NotContains("Hello World", "Hello")
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestPanicsWrapper(t *testing.T) {
+	require := New(t)
+	require.Panics(func() {
+		panic("Panic!")
+	})
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.Panics(func() {})
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestNotPanicsWrapper(t *testing.T) {
+	require := New(t)
+	require.NotPanics(func() {})
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.NotPanics(func() {
+		panic("Panic!")
+	})
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestNoErrorWrapper(t *testing.T) {
+	require := New(t)
+	require.NoError(nil)
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.NoError(errors.New("some error"))
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestErrorWrapper(t *testing.T) {
+	require := New(t)
+	require.Error(errors.New("some error"))
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.Error(nil)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestEqualErrorWrapper(t *testing.T) {
+	require := New(t)
+	require.EqualError(errors.New("some error"), "some error")
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.EqualError(errors.New("some error"), "Not some error")
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestEmptyWrapper(t *testing.T) {
+	require := New(t)
+	require.Empty("")
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.Empty("x")
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestNotEmptyWrapper(t *testing.T) {
+	require := New(t)
+	require.NotEmpty("x")
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.NotEmpty("")
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestWithinDurationWrapper(t *testing.T) {
+	require := New(t)
+	a := time.Now()
+	b := a.Add(10 * time.Second)
+
+	require.WithinDuration(a, b, 15*time.Second)
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.WithinDuration(a, b, 5*time.Second)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestInDeltaWrapper(t *testing.T) {
+	require := New(t)
+	require.InDelta(1.001, 1, 0.01)
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.InDelta(1, 2, 0.5)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestZeroWrapper(t *testing.T) {
+	require := New(t)
+	require.Zero(0)
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.Zero(1)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestNotZeroWrapper(t *testing.T) {
+	require := New(t)
+	require.NotZero(1)
+
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+	mockRequire.NotZero(0)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestJSONEqWrapper_EqualSONString(t *testing.T) {
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+
+	mockRequire.JSONEq(`{"hello": "world", "foo": "bar"}`, `{"hello": "world", "foo": "bar"}`)
+	if mockT.Failed {
+		t.Error("Check should pass")
+	}
+}
+
+func TestJSONEqWrapper_EquivalentButNotEqual(t *testing.T) {
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+
+	mockRequire.JSONEq(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
+	if mockT.Failed {
+		t.Error("Check should pass")
+	}
+}
+
+func TestJSONEqWrapper_HashOfArraysAndHashes(t *testing.T) {
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+
+	mockRequire.JSONEq("{\r\n\t\"numeric\": 1.5,\r\n\t\"array\": [{\"foo\": \"bar\"}, 1, \"string\", [\"nested\", \"array\", 5.5]],\r\n\t\"hash\": {\"nested\": \"hash\", \"nested_slice\": [\"this\", \"is\", \"nested\"]},\r\n\t\"string\": \"foo\"\r\n}",
+		"{\r\n\t\"numeric\": 1.5,\r\n\t\"hash\": {\"nested\": \"hash\", \"nested_slice\": [\"this\", \"is\", \"nested\"]},\r\n\t\"string\": \"foo\",\r\n\t\"array\": [{\"foo\": \"bar\"}, 1, \"string\", [\"nested\", \"array\", 5.5]]\r\n}")
+	if mockT.Failed {
+		t.Error("Check should pass")
+	}
+}
+
+func TestJSONEqWrapper_Array(t *testing.T) {
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+
+	mockRequire.JSONEq(`["foo", {"hello": "world", "nested": "hash"}]`, `["foo", {"nested": "hash", "hello": "world"}]`)
+	if mockT.Failed {
+		t.Error("Check should pass")
+	}
+}
+
+func TestJSONEqWrapper_HashAndArrayNotEquivalent(t *testing.T) {
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+
+	mockRequire.JSONEq(`["foo", {"hello": "world", "nested": "hash"}]`, `{"foo": "bar", {"nested": "hash", "hello": "world"}}`)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestJSONEqWrapper_HashesNotEquivalent(t *testing.T) {
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+
+	mockRequire.JSONEq(`{"foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestJSONEqWrapper_ActualIsNotJSON(t *testing.T) {
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+
+	mockRequire.JSONEq(`{"foo": "bar"}`, "Not JSON")
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestJSONEqWrapper_ExpectedIsNotJSON(t *testing.T) {
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+
+	mockRequire.JSONEq("Not JSON", `{"foo": "bar", "hello": "world"}`)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestJSONEqWrapper_ExpectedAndActualNotJSON(t *testing.T) {
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+
+	mockRequire.JSONEq("Not JSON", "Not JSON")
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestJSONEqWrapper_ArraysOfDifferentOrder(t *testing.T) {
+	mockT := new(MockT)
+	mockRequire := New(mockT)
+
+	mockRequire.JSONEq(`["foo", {"hello": "world", "nested": "hash"}]`, `[{ "hello": "world", "nested": "hash"}, "foo"]`)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}

vendor/github.com/stretchr/testify/require/require.go

@@ -0,0 +1,867 @@
+/*
+* CODE GENERATED AUTOMATICALLY WITH github.com/stretchr/testify/_codegen
+* THIS FILE MUST NOT BE EDITED BY HAND
+ */
+
+package require
+
+import (
+	assert "github.com/stretchr/testify/assert"
+	http "net/http"
+	url "net/url"
+	time "time"
+)
+
+// Condition uses a Comparison to assert a complex condition.
+func Condition(t TestingT, comp assert.Comparison, msgAndArgs ...interface{}) {
+	if !assert.Condition(t, comp, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// Conditionf uses a Comparison to assert a complex condition.
+func Conditionf(t TestingT, comp assert.Comparison, msg string, args ...interface{}) {
+	if !assert.Conditionf(t, comp, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// Contains asserts that the specified string, list(array, slice...) or map contains the
+// specified substring or element.
+//
+//    assert.Contains(t, "Hello World", "World")
+//    assert.Contains(t, ["Hello", "World"], "World")
+//    assert.Contains(t, {"Hello": "World"}, "Hello")
+func Contains(t TestingT, s interface{}, contains interface{}, msgAndArgs ...interface{}) {
+	if !assert.Contains(t, s, contains, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// Containsf asserts that the specified string, list(array, slice...) or map contains the
+// specified substring or element.
+//
+//    assert.Containsf(t, "Hello World", "World", "error message %s", "formatted")
+//    assert.Containsf(t, ["Hello", "World"], "World", "error message %s", "formatted")
+//    assert.Containsf(t, {"Hello": "World"}, "Hello", "error message %s", "formatted")
+func Containsf(t TestingT, s interface{}, contains interface{}, msg string, args ...interface{}) {
+	if !assert.Containsf(t, s, contains, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// DirExists checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.
+func DirExists(t TestingT, path string, msgAndArgs ...interface{}) {
+	if !assert.DirExists(t, path, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// DirExistsf checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.
+func DirExistsf(t TestingT, path string, msg string, args ...interface{}) {
+	if !assert.DirExistsf(t, path, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// ElementsMatch asserts that the specified listA(array, slice...) is equal to specified
+// listB(array, slice...) ignoring the order of the elements. If there are duplicate elements,
+// the number of appearances of each of them in both lists should match.
+//
+// assert.ElementsMatch(t, [1, 3, 2, 3], [1, 3, 3, 2])
+func ElementsMatch(t TestingT, listA interface{}, listB interface{}, msgAndArgs ...interface{}) {
+	if !assert.ElementsMatch(t, listA, listB, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// ElementsMatchf asserts that the specified listA(array, slice...) is equal to specified
+// listB(array, slice...) ignoring the order of the elements. If there are duplicate elements,
+// the number of appearances of each of them in both lists should match.
+//
+// assert.ElementsMatchf(t, [1, 3, 2, 3], [1, 3, 3, 2], "error message %s", "formatted")
+func ElementsMatchf(t TestingT, listA interface{}, listB interface{}, msg string, args ...interface{}) {
+	if !assert.ElementsMatchf(t, listA, listB, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// Empty asserts that the specified object is empty.  I.e. nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+//  assert.Empty(t, obj)
+func Empty(t TestingT, object interface{}, msgAndArgs ...interface{}) {
+	if !assert.Empty(t, object, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// Emptyf asserts that the specified object is empty.  I.e. nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+//  assert.Emptyf(t, obj, "error message %s", "formatted")
+func Emptyf(t TestingT, object interface{}, msg string, args ...interface{}) {
+	if !assert.Emptyf(t, object, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// Equal asserts that two objects are equal.
+//
+//    assert.Equal(t, 123, 123)
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses). Function equality
+// cannot be determined and will always fail.
+func Equal(t TestingT, expected interface{}, actual interface{}, msgAndArgs ...interface{}) {
+	if !assert.Equal(t, expected, actual, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// EqualError asserts that a function returned an error (i.e. not `nil`)
+// and that it is equal to the provided error.
+//
+//   actualObj, err := SomeFunction()
+//   assert.EqualError(t, err,  expectedErrorString)
+func EqualError(t TestingT, theError error, errString string, msgAndArgs ...interface{}) {
+	if !assert.EqualError(t, theError, errString, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// EqualErrorf asserts that a function returned an error (i.e. not `nil`)
+// and that it is equal to the provided error.
+//
+//   actualObj, err := SomeFunction()
+//   assert.EqualErrorf(t, err,  expectedErrorString, "error message %s", "formatted")
+func EqualErrorf(t TestingT, theError error, errString string, msg string, args ...interface{}) {
+	if !assert.EqualErrorf(t, theError, errString, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// EqualValues asserts that two objects are equal or convertable to the same types
+// and equal.
+//
+//    assert.EqualValues(t, uint32(123), int32(123))
+func EqualValues(t TestingT, expected interface{}, actual interface{}, msgAndArgs ...interface{}) {
+	if !assert.EqualValues(t, expected, actual, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// EqualValuesf asserts that two objects are equal or convertable to the same types
+// and equal.
+//
+//    assert.EqualValuesf(t, uint32(123, "error message %s", "formatted"), int32(123))
+func EqualValuesf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) {
+	if !assert.EqualValuesf(t, expected, actual, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// Equalf asserts that two objects are equal.
+//
+//    assert.Equalf(t, 123, 123, "error message %s", "formatted")
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses). Function equality
+// cannot be determined and will always fail.
+func Equalf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) {
+	if !assert.Equalf(t, expected, actual, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// Error asserts that a function returned an error (i.e. not `nil`).
+//
+//   actualObj, err := SomeFunction()
+//   if assert.Error(t, err) {
+// 	   assert.Equal(t, expectedError, err)
+//   }
+func Error(t TestingT, err error, msgAndArgs ...interface{}) {
+	if !assert.Error(t, err, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// Errorf asserts that a function returned an error (i.e. not `nil`).
+//
+//   actualObj, err := SomeFunction()
+//   if assert.Errorf(t, err, "error message %s", "formatted") {
+// 	   assert.Equal(t, expectedErrorf, err)
+//   }
+func Errorf(t TestingT, err error, msg string, args ...interface{}) {
+	if !assert.Errorf(t, err, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// Exactly asserts that two objects are equal in value and type.
+//
+//    assert.Exactly(t, int32(123), int64(123))
+func Exactly(t TestingT, expected interface{}, actual interface{}, msgAndArgs ...interface{}) {
+	if !assert.Exactly(t, expected, actual, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// Exactlyf asserts that two objects are equal in value and type.
+//
+//    assert.Exactlyf(t, int32(123, "error message %s", "formatted"), int64(123))
+func Exactlyf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) {
+	if !assert.Exactlyf(t, expected, actual, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// Fail reports a failure through
+func Fail(t TestingT, failureMessage string, msgAndArgs ...interface{}) {
+	if !assert.Fail(t, failureMessage, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// FailNow fails test
+func FailNow(t TestingT, failureMessage string, msgAndArgs ...interface{}) {
+	if !assert.FailNow(t, failureMessage, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// FailNowf fails test
+func FailNowf(t TestingT, failureMessage string, msg string, args ...interface{}) {
+	if !assert.FailNowf(t, failureMessage, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// Failf reports a failure through
+func Failf(t TestingT, failureMessage string, msg string, args ...interface{}) {
+	if !assert.Failf(t, failureMessage, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// False asserts that the specified value is false.
+//
+//    assert.False(t, myBool)
+func False(t TestingT, value bool, msgAndArgs ...interface{}) {
+	if !assert.False(t, value, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// Falsef asserts that the specified value is false.
+//
+//    assert.Falsef(t, myBool, "error message %s", "formatted")
+func Falsef(t TestingT, value bool, msg string, args ...interface{}) {
+	if !assert.Falsef(t, value, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// FileExists checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.
+func FileExists(t TestingT, path string, msgAndArgs ...interface{}) {
+	if !assert.FileExists(t, path, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// FileExistsf checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.
+func FileExistsf(t TestingT, path string, msg string, args ...interface{}) {
+	if !assert.FileExistsf(t, path, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// HTTPBodyContains asserts that a specified handler returns a
+// body that contains a string.
+//
+//  assert.HTTPBodyContains(t, myHandler, "www.google.com", nil, "I'm Feeling Lucky")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPBodyContains(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) {
+	if !assert.HTTPBodyContains(t, handler, method, url, values, str, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// HTTPBodyContainsf asserts that a specified handler returns a
+// body that contains a string.
+//
+//  assert.HTTPBodyContainsf(t, myHandler, "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPBodyContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) {
+	if !assert.HTTPBodyContainsf(t, handler, method, url, values, str, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// HTTPBodyNotContains asserts that a specified handler returns a
+// body that does not contain a string.
+//
+//  assert.HTTPBodyNotContains(t, myHandler, "www.google.com", nil, "I'm Feeling Lucky")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPBodyNotContains(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) {
+	if !assert.HTTPBodyNotContains(t, handler, method, url, values, str, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// HTTPBodyNotContainsf asserts that a specified handler returns a
+// body that does not contain a string.
+//
+//  assert.HTTPBodyNotContainsf(t, myHandler, "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPBodyNotContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) {
+	if !assert.HTTPBodyNotContainsf(t, handler, method, url, values, str, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// HTTPError asserts that a specified handler returns an error status code.
+//
+//  assert.HTTPError(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPError(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) {
+	if !assert.HTTPError(t, handler, method, url, values, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// HTTPErrorf asserts that a specified handler returns an error status code.
+//
+//  assert.HTTPErrorf(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).
+func HTTPErrorf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) {
+	if !assert.HTTPErrorf(t, handler, method, url, values, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// HTTPRedirect asserts that a specified handler returns a redirect status code.
+//
+//  assert.HTTPRedirect(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPRedirect(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) {
+	if !assert.HTTPRedirect(t, handler, method, url, values, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// HTTPRedirectf asserts that a specified handler returns a redirect status code.
+//
+//  assert.HTTPRedirectf(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).
+func HTTPRedirectf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) {
+	if !assert.HTTPRedirectf(t, handler, method, url, values, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// HTTPSuccess asserts that a specified handler returns a success status code.
+//
+//  assert.HTTPSuccess(t, myHandler, "POST", "http://www.google.com", nil)
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPSuccess(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) {
+	if !assert.HTTPSuccess(t, handler, method, url, values, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// HTTPSuccessf asserts that a specified handler returns a success status code.
+//
+//  assert.HTTPSuccessf(t, myHandler, "POST", "http://www.google.com", nil, "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPSuccessf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) {
+	if !assert.HTTPSuccessf(t, handler, method, url, values, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// Implements asserts that an object is implemented by the specified interface.
+//
+//    assert.Implements(t, (*MyInterface)(nil), new(MyObject))
+func Implements(t TestingT, interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) {
+	if !assert.Implements(t, interfaceObject, object, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// Implementsf asserts that an object is implemented by the specified interface.
+//
+//    assert.Implementsf(t, (*MyInterface, "error message %s", "formatted")(nil), new(MyObject))
+func Implementsf(t TestingT, interfaceObject interface{}, object interface{}, msg string, args ...interface{}) {
+	if !assert.Implementsf(t, interfaceObject, object, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// InDelta asserts that the two numerals are within delta of each other.
+//
+// 	 assert.InDelta(t, math.Pi, (22 / 7.0), 0.01)
+func InDelta(t TestingT, expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) {
+	if !assert.InDelta(t, expected, actual, delta, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// InDeltaMapValues is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.
+func InDeltaMapValues(t TestingT, expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) {
+	if !assert.InDeltaMapValues(t, expected, actual, delta, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// InDeltaMapValuesf is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.
+func InDeltaMapValuesf(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) {
+	if !assert.InDeltaMapValuesf(t, expected, actual, delta, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// InDeltaSlice is the same as InDelta, except it compares two slices.
+func InDeltaSlice(t TestingT, expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) {
+	if !assert.InDeltaSlice(t, expected, actual, delta, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// InDeltaSlicef is the same as InDelta, except it compares two slices.
+func InDeltaSlicef(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) {
+	if !assert.InDeltaSlicef(t, expected, actual, delta, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// InDeltaf asserts that the two numerals are within delta of each other.
+//
+// 	 assert.InDeltaf(t, math.Pi, (22 / 7.0, "error message %s", "formatted"), 0.01)
+func InDeltaf(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) {
+	if !assert.InDeltaf(t, expected, actual, delta, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// InEpsilon asserts that expected and actual have a relative error less than epsilon
+func InEpsilon(t TestingT, expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) {
+	if !assert.InEpsilon(t, expected, actual, epsilon, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// InEpsilonSlice is the same as InEpsilon, except it compares each value from two slices.
+func InEpsilonSlice(t TestingT, expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) {
+	if !assert.InEpsilonSlice(t, expected, actual, epsilon, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// InEpsilonSlicef is the same as InEpsilon, except it compares each value from two slices.
+func InEpsilonSlicef(t TestingT, expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) {
+	if !assert.InEpsilonSlicef(t, expected, actual, epsilon, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// InEpsilonf asserts that expected and actual have a relative error less than epsilon
+func InEpsilonf(t TestingT, expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) {
+	if !assert.InEpsilonf(t, expected, actual, epsilon, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// IsType asserts that the specified objects are of the same type.
+func IsType(t TestingT, expectedType interface{}, object interface{}, msgAndArgs ...interface{}) {
+	if !assert.IsType(t, expectedType, object, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// IsTypef asserts that the specified objects are of the same type.
+func IsTypef(t TestingT, expectedType interface{}, object interface{}, msg string, args ...interface{}) {
+	if !assert.IsTypef(t, expectedType, object, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// JSONEq asserts that two JSON strings are equivalent.
+//
+//  assert.JSONEq(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
+func JSONEq(t TestingT, expected string, actual string, msgAndArgs ...interface{}) {
+	if !assert.JSONEq(t, expected, actual, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// JSONEqf asserts that two JSON strings are equivalent.
+//
+//  assert.JSONEqf(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`, "error message %s", "formatted")
+func JSONEqf(t TestingT, expected string, actual string, msg string, args ...interface{}) {
+	if !assert.JSONEqf(t, expected, actual, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// Len asserts that the specified object has specific length.
+// Len also fails if the object has a type that len() not accept.
+//
+//    assert.Len(t, mySlice, 3)
+func Len(t TestingT, object interface{}, length int, msgAndArgs ...interface{}) {
+	if !assert.Len(t, object, length, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// Lenf asserts that the specified object has specific length.
+// Lenf also fails if the object has a type that len() not accept.
+//
+//    assert.Lenf(t, mySlice, 3, "error message %s", "formatted")
+func Lenf(t TestingT, object interface{}, length int, msg string, args ...interface{}) {
+	if !assert.Lenf(t, object, length, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// Nil asserts that the specified object is nil.
+//
+//    assert.Nil(t, err)
+func Nil(t TestingT, object interface{}, msgAndArgs ...interface{}) {
+	if !assert.Nil(t, object, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// Nilf asserts that the specified object is nil.
+//
+//    assert.Nilf(t, err, "error message %s", "formatted")
+func Nilf(t TestingT, object interface{}, msg string, args ...interface{}) {
+	if !assert.Nilf(t, object, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// NoError asserts that a function returned no error (i.e. `nil`).
+//
+//   actualObj, err := SomeFunction()
+//   if assert.NoError(t, err) {
+// 	   assert.Equal(t, expectedObj, actualObj)
+//   }
+func NoError(t TestingT, err error, msgAndArgs ...interface{}) {
+	if !assert.NoError(t, err, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// NoErrorf asserts that a function returned no error (i.e. `nil`).
+//
+//   actualObj, err := SomeFunction()
+//   if assert.NoErrorf(t, err, "error message %s", "formatted") {
+// 	   assert.Equal(t, expectedObj, actualObj)
+//   }
+func NoErrorf(t TestingT, err error, msg string, args ...interface{}) {
+	if !assert.NoErrorf(t, err, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// NotContains asserts that the specified string, list(array, slice...) or map does NOT contain the
+// specified substring or element.
+//
+//    assert.NotContains(t, "Hello World", "Earth")
+//    assert.NotContains(t, ["Hello", "World"], "Earth")
+//    assert.NotContains(t, {"Hello": "World"}, "Earth")
+func NotContains(t TestingT, s interface{}, contains interface{}, msgAndArgs ...interface{}) {
+	if !assert.NotContains(t, s, contains, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// NotContainsf asserts that the specified string, list(array, slice...) or map does NOT contain the
+// specified substring or element.
+//
+//    assert.NotContainsf(t, "Hello World", "Earth", "error message %s", "formatted")
+//    assert.NotContainsf(t, ["Hello", "World"], "Earth", "error message %s", "formatted")
+//    assert.NotContainsf(t, {"Hello": "World"}, "Earth", "error message %s", "formatted")
+func NotContainsf(t TestingT, s interface{}, contains interface{}, msg string, args ...interface{}) {
+	if !assert.NotContainsf(t, s, contains, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// NotEmpty asserts that the specified object is NOT empty.  I.e. not nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+//  if assert.NotEmpty(t, obj) {
+//    assert.Equal(t, "two", obj[1])
+//  }
+func NotEmpty(t TestingT, object interface{}, msgAndArgs ...interface{}) {
+	if !assert.NotEmpty(t, object, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// NotEmptyf asserts that the specified object is NOT empty.  I.e. not nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+//  if assert.NotEmptyf(t, obj, "error message %s", "formatted") {
+//    assert.Equal(t, "two", obj[1])
+//  }
+func NotEmptyf(t TestingT, object interface{}, msg string, args ...interface{}) {
+	if !assert.NotEmptyf(t, object, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// NotEqual asserts that the specified values are NOT equal.
+//
+//    assert.NotEqual(t, obj1, obj2)
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses).
+func NotEqual(t TestingT, expected interface{}, actual interface{}, msgAndArgs ...interface{}) {
+	if !assert.NotEqual(t, expected, actual, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// NotEqualf asserts that the specified values are NOT equal.
+//
+//    assert.NotEqualf(t, obj1, obj2, "error message %s", "formatted")
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses).
+func NotEqualf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) {
+	if !assert.NotEqualf(t, expected, actual, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// NotNil asserts that the specified object is not nil.
+//
+//    assert.NotNil(t, err)
+func NotNil(t TestingT, object interface{}, msgAndArgs ...interface{}) {
+	if !assert.NotNil(t, object, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// NotNilf asserts that the specified object is not nil.
+//
+//    assert.NotNilf(t, err, "error message %s", "formatted")
+func NotNilf(t TestingT, object interface{}, msg string, args ...interface{}) {
+	if !assert.NotNilf(t, object, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic.
+//
+//   assert.NotPanics(t, func(){ RemainCalm() })
+func NotPanics(t TestingT, f assert.PanicTestFunc, msgAndArgs ...interface{}) {
+	if !assert.NotPanics(t, f, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// NotPanicsf asserts that the code inside the specified PanicTestFunc does NOT panic.
+//
+//   assert.NotPanicsf(t, func(){ RemainCalm() }, "error message %s", "formatted")
+func NotPanicsf(t TestingT, f assert.PanicTestFunc, msg string, args ...interface{}) {
+	if !assert.NotPanicsf(t, f, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// NotRegexp asserts that a specified regexp does not match a string.
+//
+//  assert.NotRegexp(t, regexp.MustCompile("starts"), "it's starting")
+//  assert.NotRegexp(t, "^start", "it's not starting")
+func NotRegexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface{}) {
+	if !assert.NotRegexp(t, rx, str, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// NotRegexpf asserts that a specified regexp does not match a string.
+//
+//  assert.NotRegexpf(t, regexp.MustCompile("starts", "error message %s", "formatted"), "it's starting")
+//  assert.NotRegexpf(t, "^start", "it's not starting", "error message %s", "formatted")
+func NotRegexpf(t TestingT, rx interface{}, str interface{}, msg string, args ...interface{}) {
+	if !assert.NotRegexpf(t, rx, str, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// NotSubset asserts that the specified list(array, slice...) contains not all
+// elements given in the specified subset(array, slice...).
+//
+//    assert.NotSubset(t, [1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]")
+func NotSubset(t TestingT, list interface{}, subset interface{}, msgAndArgs ...interface{}) {
+	if !assert.NotSubset(t, list, subset, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// NotSubsetf asserts that the specified list(array, slice...) contains not all
+// elements given in the specified subset(array, slice...).
+//
+//    assert.NotSubsetf(t, [1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]", "error message %s", "formatted")
+func NotSubsetf(t TestingT, list interface{}, subset interface{}, msg string, args ...interface{}) {
+	if !assert.NotSubsetf(t, list, subset, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// NotZero asserts that i is not the zero value for its type.
+func NotZero(t TestingT, i interface{}, msgAndArgs ...interface{}) {
+	if !assert.NotZero(t, i, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// NotZerof asserts that i is not the zero value for its type.
+func NotZerof(t TestingT, i interface{}, msg string, args ...interface{}) {
+	if !assert.NotZerof(t, i, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// Panics asserts that the code inside the specified PanicTestFunc panics.
+//
+//   assert.Panics(t, func(){ GoCrazy() })
+func Panics(t TestingT, f assert.PanicTestFunc, msgAndArgs ...interface{}) {
+	if !assert.Panics(t, f, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// PanicsWithValue asserts that the code inside the specified PanicTestFunc panics, and that
+// the recovered panic value equals the expected panic value.
+//
+//   assert.PanicsWithValue(t, "crazy error", func(){ GoCrazy() })
+func PanicsWithValue(t TestingT, expected interface{}, f assert.PanicTestFunc, msgAndArgs ...interface{}) {
+	if !assert.PanicsWithValue(t, expected, f, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// PanicsWithValuef asserts that the code inside the specified PanicTestFunc panics, and that
+// the recovered panic value equals the expected panic value.
+//
+//   assert.PanicsWithValuef(t, "crazy error", func(){ GoCrazy() }, "error message %s", "formatted")
+func PanicsWithValuef(t TestingT, expected interface{}, f assert.PanicTestFunc, msg string, args ...interface{}) {
+	if !assert.PanicsWithValuef(t, expected, f, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// Panicsf asserts that the code inside the specified PanicTestFunc panics.
+//
+//   assert.Panicsf(t, func(){ GoCrazy() }, "error message %s", "formatted")
+func Panicsf(t TestingT, f assert.PanicTestFunc, msg string, args ...interface{}) {
+	if !assert.Panicsf(t, f, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// Regexp asserts that a specified regexp matches a string.
+//
+//  assert.Regexp(t, regexp.MustCompile("start"), "it's starting")
+//  assert.Regexp(t, "start...$", "it's not starting")
+func Regexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface{}) {
+	if !assert.Regexp(t, rx, str, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// Regexpf asserts that a specified regexp matches a string.
+//
+//  assert.Regexpf(t, regexp.MustCompile("start", "error message %s", "formatted"), "it's starting")
+//  assert.Regexpf(t, "start...$", "it's not starting", "error message %s", "formatted")
+func Regexpf(t TestingT, rx interface{}, str interface{}, msg string, args ...interface{}) {
+	if !assert.Regexpf(t, rx, str, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// Subset asserts that the specified list(array, slice...) contains all
+// elements given in the specified subset(array, slice...).
+//
+//    assert.Subset(t, [1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]")
+func Subset(t TestingT, list interface{}, subset interface{}, msgAndArgs ...interface{}) {
+	if !assert.Subset(t, list, subset, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// Subsetf asserts that the specified list(array, slice...) contains all
+// elements given in the specified subset(array, slice...).
+//
+//    assert.Subsetf(t, [1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]", "error message %s", "formatted")
+func Subsetf(t TestingT, list interface{}, subset interface{}, msg string, args ...interface{}) {
+	if !assert.Subsetf(t, list, subset, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// True asserts that the specified value is true.
+//
+//    assert.True(t, myBool)
+func True(t TestingT, value bool, msgAndArgs ...interface{}) {
+	if !assert.True(t, value, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// Truef asserts that the specified value is true.
+//
+//    assert.Truef(t, myBool, "error message %s", "formatted")
+func Truef(t TestingT, value bool, msg string, args ...interface{}) {
+	if !assert.Truef(t, value, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// WithinDuration asserts that the two times are within duration delta of each other.
+//
+//   assert.WithinDuration(t, time.Now(), time.Now(), 10*time.Second)
+func WithinDuration(t TestingT, expected time.Time, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) {
+	if !assert.WithinDuration(t, expected, actual, delta, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// WithinDurationf asserts that the two times are within duration delta of each other.
+//
+//   assert.WithinDurationf(t, time.Now(), time.Now(), 10*time.Second, "error message %s", "formatted")
+func WithinDurationf(t TestingT, expected time.Time, actual time.Time, delta time.Duration, msg string, args ...interface{}) {
+	if !assert.WithinDurationf(t, expected, actual, delta, msg, args...) {
+		t.FailNow()
+	}
+}
+
+// Zero asserts that i is the zero value for its type.
+func Zero(t TestingT, i interface{}, msgAndArgs ...interface{}) {
+	if !assert.Zero(t, i, msgAndArgs...) {
+		t.FailNow()
+	}
+}
+
+// Zerof asserts that i is the zero value for its type.
+func Zerof(t TestingT, i interface{}, msg string, args ...interface{}) {
+	if !assert.Zerof(t, i, msg, args...) {
+		t.FailNow()
+	}
+}

vendor/github.com/stretchr/testify/require/require.go.tmpl

@@ -0,0 +1,6 @@
+{{.Comment}}
+func {{.DocInfo.Name}}(t TestingT, {{.Params}}) {
+	if !assert.{{.DocInfo.Name}}(t, {{.ForwardedParams}}) {
+		t.FailNow()
+	}
+}

vendor/github.com/stretchr/testify/require/require_forward.go

@@ -0,0 +1,687 @@
+/*
+* CODE GENERATED AUTOMATICALLY WITH github.com/stretchr/testify/_codegen
+* THIS FILE MUST NOT BE EDITED BY HAND
+ */
+
+package require
+
+import (
+	assert "github.com/stretchr/testify/assert"
+	http "net/http"
+	url "net/url"
+	time "time"
+)
+
+// Condition uses a Comparison to assert a complex condition.
+func (a *Assertions) Condition(comp assert.Comparison, msgAndArgs ...interface{}) {
+	Condition(a.t, comp, msgAndArgs...)
+}
+
+// Conditionf uses a Comparison to assert a complex condition.
+func (a *Assertions) Conditionf(comp assert.Comparison, msg string, args ...interface{}) {
+	Conditionf(a.t, comp, msg, args...)
+}
+
+// Contains asserts that the specified string, list(array, slice...) or map contains the
+// specified substring or element.
+//
+//    a.Contains("Hello World", "World")
+//    a.Contains(["Hello", "World"], "World")
+//    a.Contains({"Hello": "World"}, "Hello")
+func (a *Assertions) Contains(s interface{}, contains interface{}, msgAndArgs ...interface{}) {
+	Contains(a.t, s, contains, msgAndArgs...)
+}
+
+// Containsf asserts that the specified string, list(array, slice...) or map contains the
+// specified substring or element.
+//
+//    a.Containsf("Hello World", "World", "error message %s", "formatted")
+//    a.Containsf(["Hello", "World"], "World", "error message %s", "formatted")
+//    a.Containsf({"Hello": "World"}, "Hello", "error message %s", "formatted")
+func (a *Assertions) Containsf(s interface{}, contains interface{}, msg string, args ...interface{}) {
+	Containsf(a.t, s, contains, msg, args...)
+}
+
+// DirExists checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.
+func (a *Assertions) DirExists(path string, msgAndArgs ...interface{}) {
+	DirExists(a.t, path, msgAndArgs...)
+}
+
+// DirExistsf checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.
+func (a *Assertions) DirExistsf(path string, msg string, args ...interface{}) {
+	DirExistsf(a.t, path, msg, args...)
+}
+
+// ElementsMatch asserts that the specified listA(array, slice...) is equal to specified
+// listB(array, slice...) ignoring the order of the elements. If there are duplicate elements,
+// the number of appearances of each of them in both lists should match.
+//
+// a.ElementsMatch([1, 3, 2, 3], [1, 3, 3, 2])
+func (a *Assertions) ElementsMatch(listA interface{}, listB interface{}, msgAndArgs ...interface{}) {
+	ElementsMatch(a.t, listA, listB, msgAndArgs...)
+}
+
+// ElementsMatchf asserts that the specified listA(array, slice...) is equal to specified
+// listB(array, slice...) ignoring the order of the elements. If there are duplicate elements,
+// the number of appearances of each of them in both lists should match.
+//
+// a.ElementsMatchf([1, 3, 2, 3], [1, 3, 3, 2], "error message %s", "formatted")
+func (a *Assertions) ElementsMatchf(listA interface{}, listB interface{}, msg string, args ...interface{}) {
+	ElementsMatchf(a.t, listA, listB, msg, args...)
+}
+
+// Empty asserts that the specified object is empty.  I.e. nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+//  a.Empty(obj)
+func (a *Assertions) Empty(object interface{}, msgAndArgs ...interface{}) {
+	Empty(a.t, object, msgAndArgs...)
+}
+
+// Emptyf asserts that the specified object is empty.  I.e. nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+//  a.Emptyf(obj, "error message %s", "formatted")
+func (a *Assertions) Emptyf(object interface{}, msg string, args ...interface{}) {
+	Emptyf(a.t, object, msg, args...)
+}
+
+// Equal asserts that two objects are equal.
+//
+//    a.Equal(123, 123)
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses). Function equality
+// cannot be determined and will always fail.
+func (a *Assertions) Equal(expected interface{}, actual interface{}, msgAndArgs ...interface{}) {
+	Equal(a.t, expected, actual, msgAndArgs...)
+}
+
+// EqualError asserts that a function returned an error (i.e. not `nil`)
+// and that it is equal to the provided error.
+//
+//   actualObj, err := SomeFunction()
+//   a.EqualError(err,  expectedErrorString)
+func (a *Assertions) EqualError(theError error, errString string, msgAndArgs ...interface{}) {
+	EqualError(a.t, theError, errString, msgAndArgs...)
+}
+
+// EqualErrorf asserts that a function returned an error (i.e. not `nil`)
+// and that it is equal to the provided error.
+//
+//   actualObj, err := SomeFunction()
+//   a.EqualErrorf(err,  expectedErrorString, "error message %s", "formatted")
+func (a *Assertions) EqualErrorf(theError error, errString string, msg string, args ...interface{}) {
+	EqualErrorf(a.t, theError, errString, msg, args...)
+}
+
+// EqualValues asserts that two objects are equal or convertable to the same types
+// and equal.
+//
+//    a.EqualValues(uint32(123), int32(123))
+func (a *Assertions) EqualValues(expected interface{}, actual interface{}, msgAndArgs ...interface{}) {
+	EqualValues(a.t, expected, actual, msgAndArgs...)
+}
+
+// EqualValuesf asserts that two objects are equal or convertable to the same types
+// and equal.
+//
+//    a.EqualValuesf(uint32(123, "error message %s", "formatted"), int32(123))
+func (a *Assertions) EqualValuesf(expected interface{}, actual interface{}, msg string, args ...interface{}) {
+	EqualValuesf(a.t, expected, actual, msg, args...)
+}
+
+// Equalf asserts that two objects are equal.
+//
+//    a.Equalf(123, 123, "error message %s", "formatted")
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses). Function equality
+// cannot be determined and will always fail.
+func (a *Assertions) Equalf(expected interface{}, actual interface{}, msg string, args ...interface{}) {
+	Equalf(a.t, expected, actual, msg, args...)
+}
+
+// Error asserts that a function returned an error (i.e. not `nil`).
+//
+//   actualObj, err := SomeFunction()
+//   if a.Error(err) {
+// 	   assert.Equal(t, expectedError, err)
+//   }
+func (a *Assertions) Error(err error, msgAndArgs ...interface{}) {
+	Error(a.t, err, msgAndArgs...)
+}
+
+// Errorf asserts that a function returned an error (i.e. not `nil`).
+//
+//   actualObj, err := SomeFunction()
+//   if a.Errorf(err, "error message %s", "formatted") {
+// 	   assert.Equal(t, expectedErrorf, err)
+//   }
+func (a *Assertions) Errorf(err error, msg string, args ...interface{}) {
+	Errorf(a.t, err, msg, args...)
+}
+
+// Exactly asserts that two objects are equal in value and type.
+//
+//    a.Exactly(int32(123), int64(123))
+func (a *Assertions) Exactly(expected interface{}, actual interface{}, msgAndArgs ...interface{}) {
+	Exactly(a.t, expected, actual, msgAndArgs...)
+}
+
+// Exactlyf asserts that two objects are equal in value and type.
+//
+//    a.Exactlyf(int32(123, "error message %s", "formatted"), int64(123))
+func (a *Assertions) Exactlyf(expected interface{}, actual interface{}, msg string, args ...interface{}) {
+	Exactlyf(a.t, expected, actual, msg, args...)
+}
+
+// Fail reports a failure through
+func (a *Assertions) Fail(failureMessage string, msgAndArgs ...interface{}) {
+	Fail(a.t, failureMessage, msgAndArgs...)
+}
+
+// FailNow fails test
+func (a *Assertions) FailNow(failureMessage string, msgAndArgs ...interface{}) {
+	FailNow(a.t, failureMessage, msgAndArgs...)
+}
+
+// FailNowf fails test
+func (a *Assertions) FailNowf(failureMessage string, msg string, args ...interface{}) {
+	FailNowf(a.t, failureMessage, msg, args...)
+}
+
+// Failf reports a failure through
+func (a *Assertions) Failf(failureMessage string, msg string, args ...interface{}) {
+	Failf(a.t, failureMessage, msg, args...)
+}
+
+// False asserts that the specified value is false.
+//
+//    a.False(myBool)
+func (a *Assertions) False(value bool, msgAndArgs ...interface{}) {
+	False(a.t, value, msgAndArgs...)
+}
+
+// Falsef asserts that the specified value is false.
+//
+//    a.Falsef(myBool, "error message %s", "formatted")
+func (a *Assertions) Falsef(value bool, msg string, args ...interface{}) {
+	Falsef(a.t, value, msg, args...)
+}
+
+// FileExists checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.
+func (a *Assertions) FileExists(path string, msgAndArgs ...interface{}) {
+	FileExists(a.t, path, msgAndArgs...)
+}
+
+// FileExistsf checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.
+func (a *Assertions) FileExistsf(path string, msg string, args ...interface{}) {
+	FileExistsf(a.t, path, msg, args...)
+}
+
+// HTTPBodyContains asserts that a specified handler returns a
+// body that contains a string.
+//
+//  a.HTTPBodyContains(myHandler, "www.google.com", nil, "I'm Feeling Lucky")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPBodyContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) {
+	HTTPBodyContains(a.t, handler, method, url, values, str, msgAndArgs...)
+}
+
+// HTTPBodyContainsf asserts that a specified handler returns a
+// body that contains a string.
+//
+//  a.HTTPBodyContainsf(myHandler, "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPBodyContainsf(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) {
+	HTTPBodyContainsf(a.t, handler, method, url, values, str, msg, args...)
+}
+
+// HTTPBodyNotContains asserts that a specified handler returns a
+// body that does not contain a string.
+//
+//  a.HTTPBodyNotContains(myHandler, "www.google.com", nil, "I'm Feeling Lucky")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPBodyNotContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) {
+	HTTPBodyNotContains(a.t, handler, method, url, values, str, msgAndArgs...)
+}
+
+// HTTPBodyNotContainsf asserts that a specified handler returns a
+// body that does not contain a string.
+//
+//  a.HTTPBodyNotContainsf(myHandler, "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPBodyNotContainsf(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) {
+	HTTPBodyNotContainsf(a.t, handler, method, url, values, str, msg, args...)
+}
+
+// HTTPError asserts that a specified handler returns an error status code.
+//
+//  a.HTTPError(myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPError(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) {
+	HTTPError(a.t, handler, method, url, values, msgAndArgs...)
+}
+
+// HTTPErrorf asserts that a specified handler returns an error status code.
+//
+//  a.HTTPErrorf(myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).
+func (a *Assertions) HTTPErrorf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) {
+	HTTPErrorf(a.t, handler, method, url, values, msg, args...)
+}
+
+// HTTPRedirect asserts that a specified handler returns a redirect status code.
+//
+//  a.HTTPRedirect(myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPRedirect(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) {
+	HTTPRedirect(a.t, handler, method, url, values, msgAndArgs...)
+}
+
+// HTTPRedirectf asserts that a specified handler returns a redirect status code.
+//
+//  a.HTTPRedirectf(myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).
+func (a *Assertions) HTTPRedirectf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) {
+	HTTPRedirectf(a.t, handler, method, url, values, msg, args...)
+}
+
+// HTTPSuccess asserts that a specified handler returns a success status code.
+//
+//  a.HTTPSuccess(myHandler, "POST", "http://www.google.com", nil)
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPSuccess(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) {
+	HTTPSuccess(a.t, handler, method, url, values, msgAndArgs...)
+}
+
+// HTTPSuccessf asserts that a specified handler returns a success status code.
+//
+//  a.HTTPSuccessf(myHandler, "POST", "http://www.google.com", nil, "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPSuccessf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) {
+	HTTPSuccessf(a.t, handler, method, url, values, msg, args...)
+}
+
+// Implements asserts that an object is implemented by the specified interface.
+//
+//    a.Implements((*MyInterface)(nil), new(MyObject))
+func (a *Assertions) Implements(interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) {
+	Implements(a.t, interfaceObject, object, msgAndArgs...)
+}
+
+// Implementsf asserts that an object is implemented by the specified interface.
+//
+//    a.Implementsf((*MyInterface, "error message %s", "formatted")(nil), new(MyObject))
+func (a *Assertions) Implementsf(interfaceObject interface{}, object interface{}, msg string, args ...interface{}) {
+	Implementsf(a.t, interfaceObject, object, msg, args...)
+}
+
+// InDelta asserts that the two numerals are within delta of each other.
+//
+// 	 a.InDelta(math.Pi, (22 / 7.0), 0.01)
+func (a *Assertions) InDelta(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) {
+	InDelta(a.t, expected, actual, delta, msgAndArgs...)
+}
+
+// InDeltaMapValues is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.
+func (a *Assertions) InDeltaMapValues(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) {
+	InDeltaMapValues(a.t, expected, actual, delta, msgAndArgs...)
+}
+
+// InDeltaMapValuesf is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.
+func (a *Assertions) InDeltaMapValuesf(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) {
+	InDeltaMapValuesf(a.t, expected, actual, delta, msg, args...)
+}
+
+// InDeltaSlice is the same as InDelta, except it compares two slices.
+func (a *Assertions) InDeltaSlice(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) {
+	InDeltaSlice(a.t, expected, actual, delta, msgAndArgs...)
+}
+
+// InDeltaSlicef is the same as InDelta, except it compares two slices.
+func (a *Assertions) InDeltaSlicef(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) {
+	InDeltaSlicef(a.t, expected, actual, delta, msg, args...)
+}
+
+// InDeltaf asserts that the two numerals are within delta of each other.
+//
+// 	 a.InDeltaf(math.Pi, (22 / 7.0, "error message %s", "formatted"), 0.01)
+func (a *Assertions) InDeltaf(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) {
+	InDeltaf(a.t, expected, actual, delta, msg, args...)
+}
+
+// InEpsilon asserts that expected and actual have a relative error less than epsilon
+func (a *Assertions) InEpsilon(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) {
+	InEpsilon(a.t, expected, actual, epsilon, msgAndArgs...)
+}
+
+// InEpsilonSlice is the same as InEpsilon, except it compares each value from two slices.
+func (a *Assertions) InEpsilonSlice(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) {
+	InEpsilonSlice(a.t, expected, actual, epsilon, msgAndArgs...)
+}
+
+// InEpsilonSlicef is the same as InEpsilon, except it compares each value from two slices.
+func (a *Assertions) InEpsilonSlicef(expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) {
+	InEpsilonSlicef(a.t, expected, actual, epsilon, msg, args...)
+}
+
+// InEpsilonf asserts that expected and actual have a relative error less than epsilon
+func (a *Assertions) InEpsilonf(expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) {
+	InEpsilonf(a.t, expected, actual, epsilon, msg, args...)
+}
+
+// IsType asserts that the specified objects are of the same type.
+func (a *Assertions) IsType(expectedType interface{}, object interface{}, msgAndArgs ...interface{}) {
+	IsType(a.t, expectedType, object, msgAndArgs...)
+}
+
+// IsTypef asserts that the specified objects are of the same type.
+func (a *Assertions) IsTypef(expectedType interface{}, object interface{}, msg string, args ...interface{}) {
+	IsTypef(a.t, expectedType, object, msg, args...)
+}
+
+// JSONEq asserts that two JSON strings are equivalent.
+//
+//  a.JSONEq(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
+func (a *Assertions) JSONEq(expected string, actual string, msgAndArgs ...interface{}) {
+	JSONEq(a.t, expected, actual, msgAndArgs...)
+}
+
+// JSONEqf asserts that two JSON strings are equivalent.
+//
+//  a.JSONEqf(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`, "error message %s", "formatted")
+func (a *Assertions) JSONEqf(expected string, actual string, msg string, args ...interface{}) {
+	JSONEqf(a.t, expected, actual, msg, args...)
+}
+
+// Len asserts that the specified object has specific length.
+// Len also fails if the object has a type that len() not accept.
+//
+//    a.Len(mySlice, 3)
+func (a *Assertions) Len(object interface{}, length int, msgAndArgs ...interface{}) {
+	Len(a.t, object, length, msgAndArgs...)
+}
+
+// Lenf asserts that the specified object has specific length.
+// Lenf also fails if the object has a type that len() not accept.
+//
+//    a.Lenf(mySlice, 3, "error message %s", "formatted")
+func (a *Assertions) Lenf(object interface{}, length int, msg string, args ...interface{}) {
+	Lenf(a.t, object, length, msg, args...)
+}
+
+// Nil asserts that the specified object is nil.
+//
+//    a.Nil(err)
+func (a *Assertions) Nil(object interface{}, msgAndArgs ...interface{}) {
+	Nil(a.t, object, msgAndArgs...)
+}
+
+// Nilf asserts that the specified object is nil.
+//
+//    a.Nilf(err, "error message %s", "formatted")
+func (a *Assertions) Nilf(object interface{}, msg string, args ...interface{}) {
+	Nilf(a.t, object, msg, args...)
+}
+
+// NoError asserts that a function returned no error (i.e. `nil`).
+//
+//   actualObj, err := SomeFunction()
+//   if a.NoError(err) {
+// 	   assert.Equal(t, expectedObj, actualObj)
+//   }
+func (a *Assertions) NoError(err error, msgAndArgs ...interface{}) {
+	NoError(a.t, err, msgAndArgs...)
+}
+
+// NoErrorf asserts that a function returned no error (i.e. `nil`).
+//
+//   actualObj, err := SomeFunction()
+//   if a.NoErrorf(err, "error message %s", "formatted") {
+// 	   assert.Equal(t, expectedObj, actualObj)
+//   }
+func (a *Assertions) NoErrorf(err error, msg string, args ...interface{}) {
+	NoErrorf(a.t, err, msg, args...)
+}
+
+// NotContains asserts that the specified string, list(array, slice...) or map does NOT contain the
+// specified substring or element.
+//
+//    a.NotContains("Hello World", "Earth")
+//    a.NotContains(["Hello", "World"], "Earth")
+//    a.NotContains({"Hello": "World"}, "Earth")
+func (a *Assertions) NotContains(s interface{}, contains interface{}, msgAndArgs ...interface{}) {
+	NotContains(a.t, s, contains, msgAndArgs...)
+}
+
+// NotContainsf asserts that the specified string, list(array, slice...) or map does NOT contain the
+// specified substring or element.
+//
+//    a.NotContainsf("Hello World", "Earth", "error message %s", "formatted")
+//    a.NotContainsf(["Hello", "World"], "Earth", "error message %s", "formatted")
+//    a.NotContainsf({"Hello": "World"}, "Earth", "error message %s", "formatted")
+func (a *Assertions) NotContainsf(s interface{}, contains interface{}, msg string, args ...interface{}) {
+	NotContainsf(a.t, s, contains, msg, args...)
+}
+
+// NotEmpty asserts that the specified object is NOT empty.  I.e. not nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+//  if a.NotEmpty(obj) {
+//    assert.Equal(t, "two", obj[1])
+//  }
+func (a *Assertions) NotEmpty(object interface{}, msgAndArgs ...interface{}) {
+	NotEmpty(a.t, object, msgAndArgs...)
+}
+
+// NotEmptyf asserts that the specified object is NOT empty.  I.e. not nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+//  if a.NotEmptyf(obj, "error message %s", "formatted") {
+//    assert.Equal(t, "two", obj[1])
+//  }
+func (a *Assertions) NotEmptyf(object interface{}, msg string, args ...interface{}) {
+	NotEmptyf(a.t, object, msg, args...)
+}
+
+// NotEqual asserts that the specified values are NOT equal.
+//
+//    a.NotEqual(obj1, obj2)
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses).
+func (a *Assertions) NotEqual(expected interface{}, actual interface{}, msgAndArgs ...interface{}) {
+	NotEqual(a.t, expected, actual, msgAndArgs...)
+}
+
+// NotEqualf asserts that the specified values are NOT equal.
+//
+//    a.NotEqualf(obj1, obj2, "error message %s", "formatted")
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses).
+func (a *Assertions) NotEqualf(expected interface{}, actual interface{}, msg string, args ...interface{}) {
+	NotEqualf(a.t, expected, actual, msg, args...)
+}
+
+// NotNil asserts that the specified object is not nil.
+//
+//    a.NotNil(err)
+func (a *Assertions) NotNil(object interface{}, msgAndArgs ...interface{}) {
+	NotNil(a.t, object, msgAndArgs...)
+}
+
+// NotNilf asserts that the specified object is not nil.
+//
+//    a.NotNilf(err, "error message %s", "formatted")
+func (a *Assertions) NotNilf(object interface{}, msg string, args ...interface{}) {
+	NotNilf(a.t, object, msg, args...)
+}
+
+// NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic.
+//
+//   a.NotPanics(func(){ RemainCalm() })
+func (a *Assertions) NotPanics(f assert.PanicTestFunc, msgAndArgs ...interface{}) {
+	NotPanics(a.t, f, msgAndArgs...)
+}
+
+// NotPanicsf asserts that the code inside the specified PanicTestFunc does NOT panic.
+//
+//   a.NotPanicsf(func(){ RemainCalm() }, "error message %s", "formatted")
+func (a *Assertions) NotPanicsf(f assert.PanicTestFunc, msg string, args ...interface{}) {
+	NotPanicsf(a.t, f, msg, args...)
+}
+
+// NotRegexp asserts that a specified regexp does not match a string.
+//
+//  a.NotRegexp(regexp.MustCompile("starts"), "it's starting")
+//  a.NotRegexp("^start", "it's not starting")
+func (a *Assertions) NotRegexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) {
+	NotRegexp(a.t, rx, str, msgAndArgs...)
+}
+
+// NotRegexpf asserts that a specified regexp does not match a string.
+//
+//  a.NotRegexpf(regexp.MustCompile("starts", "error message %s", "formatted"), "it's starting")
+//  a.NotRegexpf("^start", "it's not starting", "error message %s", "formatted")
+func (a *Assertions) NotRegexpf(rx interface{}, str interface{}, msg string, args ...interface{}) {
+	NotRegexpf(a.t, rx, str, msg, args...)
+}
+
+// NotSubset asserts that the specified list(array, slice...) contains not all
+// elements given in the specified subset(array, slice...).
+//
+//    a.NotSubset([1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]")
+func (a *Assertions) NotSubset(list interface{}, subset interface{}, msgAndArgs ...interface{}) {
+	NotSubset(a.t, list, subset, msgAndArgs...)
+}
+
+// NotSubsetf asserts that the specified list(array, slice...) contains not all
+// elements given in the specified subset(array, slice...).
+//
+//    a.NotSubsetf([1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]", "error message %s", "formatted")
+func (a *Assertions) NotSubsetf(list interface{}, subset interface{}, msg string, args ...interface{}) {
+	NotSubsetf(a.t, list, subset, msg, args...)
+}
+
+// NotZero asserts that i is not the zero value for its type.
+func (a *Assertions) NotZero(i interface{}, msgAndArgs ...interface{}) {
+	NotZero(a.t, i, msgAndArgs...)
+}
+
+// NotZerof asserts that i is not the zero value for its type.
+func (a *Assertions) NotZerof(i interface{}, msg string, args ...interface{}) {
+	NotZerof(a.t, i, msg, args...)
+}
+
+// Panics asserts that the code inside the specified PanicTestFunc panics.
+//
+//   a.Panics(func(){ GoCrazy() })
+func (a *Assertions) Panics(f assert.PanicTestFunc, msgAndArgs ...interface{}) {
+	Panics(a.t, f, msgAndArgs...)
+}
+
+// PanicsWithValue asserts that the code inside the specified PanicTestFunc panics, and that
+// the recovered panic value equals the expected panic value.
+//
+//   a.PanicsWithValue("crazy error", func(){ GoCrazy() })
+func (a *Assertions) PanicsWithValue(expected interface{}, f assert.PanicTestFunc, msgAndArgs ...interface{}) {
+	PanicsWithValue(a.t, expected, f, msgAndArgs...)
+}
+
+// PanicsWithValuef asserts that the code inside the specified PanicTestFunc panics, and that
+// the recovered panic value equals the expected panic value.
+//
+//   a.PanicsWithValuef("crazy error", func(){ GoCrazy() }, "error message %s", "formatted")
+func (a *Assertions) PanicsWithValuef(expected interface{}, f assert.PanicTestFunc, msg string, args ...interface{}) {
+	PanicsWithValuef(a.t, expected, f, msg, args...)
+}
+
+// Panicsf asserts that the code inside the specified PanicTestFunc panics.
+//
+//   a.Panicsf(func(){ GoCrazy() }, "error message %s", "formatted")
+func (a *Assertions) Panicsf(f assert.PanicTestFunc, msg string, args ...interface{}) {
+	Panicsf(a.t, f, msg, args...)
+}
+
+// Regexp asserts that a specified regexp matches a string.
+//
+//  a.Regexp(regexp.MustCompile("start"), "it's starting")
+//  a.Regexp("start...$", "it's not starting")
+func (a *Assertions) Regexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) {
+	Regexp(a.t, rx, str, msgAndArgs...)
+}
+
+// Regexpf asserts that a specified regexp matches a string.
+//
+//  a.Regexpf(regexp.MustCompile("start", "error message %s", "formatted"), "it's starting")
+//  a.Regexpf("start...$", "it's not starting", "error message %s", "formatted")
+func (a *Assertions) Regexpf(rx interface{}, str interface{}, msg string, args ...interface{}) {
+	Regexpf(a.t, rx, str, msg, args...)
+}
+
+// Subset asserts that the specified list(array, slice...) contains all
+// elements given in the specified subset(array, slice...).
+//
+//    a.Subset([1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]")
+func (a *Assertions) Subset(list interface{}, subset interface{}, msgAndArgs ...interface{}) {
+	Subset(a.t, list, subset, msgAndArgs...)
+}
+
+// Subsetf asserts that the specified list(array, slice...) contains all
+// elements given in the specified subset(array, slice...).
+//
+//    a.Subsetf([1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]", "error message %s", "formatted")
+func (a *Assertions) Subsetf(list interface{}, subset interface{}, msg string, args ...interface{}) {
+	Subsetf(a.t, list, subset, msg, args...)
+}
+
+// True asserts that the specified value is true.
+//
+//    a.True(myBool)
+func (a *Assertions) True(value bool, msgAndArgs ...interface{}) {
+	True(a.t, value, msgAndArgs...)
+}
+
+// Truef asserts that the specified value is true.
+//
+//    a.Truef(myBool, "error message %s", "formatted")
+func (a *Assertions) Truef(value bool, msg string, args ...interface{}) {
+	Truef(a.t, value, msg, args...)
+}
+
+// WithinDuration asserts that the two times are within duration delta of each other.
+//
+//   a.WithinDuration(time.Now(), time.Now(), 10*time.Second)
+func (a *Assertions) WithinDuration(expected time.Time, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) {
+	WithinDuration(a.t, expected, actual, delta, msgAndArgs...)
+}
+
+// WithinDurationf asserts that the two times are within duration delta of each other.
+//
+//   a.WithinDurationf(time.Now(), time.Now(), 10*time.Second, "error message %s", "formatted")
+func (a *Assertions) WithinDurationf(expected time.Time, actual time.Time, delta time.Duration, msg string, args ...interface{}) {
+	WithinDurationf(a.t, expected, actual, delta, msg, args...)
+}
+
+// Zero asserts that i is the zero value for its type.
+func (a *Assertions) Zero(i interface{}, msgAndArgs ...interface{}) {
+	Zero(a.t, i, msgAndArgs...)
+}
+
+// Zerof asserts that i is the zero value for its type.
+func (a *Assertions) Zerof(i interface{}, msg string, args ...interface{}) {
+	Zerof(a.t, i, msg, args...)
+}

vendor/github.com/stretchr/testify/require/require_forward.go.tmpl

@@ -0,0 +1,4 @@
+{{.CommentWithoutT "a"}}
+func (a *Assertions) {{.DocInfo.Name}}({{.Params}}) {
+	{{.DocInfo.Name}}(a.t, {{.ForwardedParams}})
+}

vendor/github.com/stretchr/testify/require/requirements.go

@@ -0,0 +1,9 @@
+package require
+
+// TestingT is an interface wrapper around *testing.T
+type TestingT interface {
+	Errorf(format string, args ...interface{})
+	FailNow()
+}
+
+//go:generate go run ../_codegen/main.go -output-package=require -template=require.go.tmpl -include-format-funcs

vendor/github.com/stretchr/testify/require/requirements_test.go

@@ -0,0 +1,369 @@
+package require
+
+import (
+	"errors"
+	"testing"
+	"time"
+)
+
+// AssertionTesterInterface defines an interface to be used for testing assertion methods
+type AssertionTesterInterface interface {
+	TestMethod()
+}
+
+// AssertionTesterConformingObject is an object that conforms to the AssertionTesterInterface interface
+type AssertionTesterConformingObject struct {
+}
+
+func (a *AssertionTesterConformingObject) TestMethod() {
+}
+
+// AssertionTesterNonConformingObject is an object that does not conform to the AssertionTesterInterface interface
+type AssertionTesterNonConformingObject struct {
+}
+
+type MockT struct {
+	Failed bool
+}
+
+func (t *MockT) FailNow() {
+	t.Failed = true
+}
+
+func (t *MockT) Errorf(format string, args ...interface{}) {
+	_, _ = format, args
+}
+
+func TestImplements(t *testing.T) {
+
+	Implements(t, (*AssertionTesterInterface)(nil), new(AssertionTesterConformingObject))
+
+	mockT := new(MockT)
+	Implements(mockT, (*AssertionTesterInterface)(nil), new(AssertionTesterNonConformingObject))
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestIsType(t *testing.T) {
+
+	IsType(t, new(AssertionTesterConformingObject), new(AssertionTesterConformingObject))
+
+	mockT := new(MockT)
+	IsType(mockT, new(AssertionTesterConformingObject), new(AssertionTesterNonConformingObject))
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestEqual(t *testing.T) {
+
+	Equal(t, 1, 1)
+
+	mockT := new(MockT)
+	Equal(mockT, 1, 2)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+
+}
+
+func TestNotEqual(t *testing.T) {
+
+	NotEqual(t, 1, 2)
+	mockT := new(MockT)
+	NotEqual(mockT, 2, 2)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestExactly(t *testing.T) {
+
+	a := float32(1)
+	b := float32(1)
+	c := float64(1)
+
+	Exactly(t, a, b)
+
+	mockT := new(MockT)
+	Exactly(mockT, a, c)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestNotNil(t *testing.T) {
+
+	NotNil(t, new(AssertionTesterConformingObject))
+
+	mockT := new(MockT)
+	NotNil(mockT, nil)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestNil(t *testing.T) {
+
+	Nil(t, nil)
+
+	mockT := new(MockT)
+	Nil(mockT, new(AssertionTesterConformingObject))
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestTrue(t *testing.T) {
+
+	True(t, true)
+
+	mockT := new(MockT)
+	True(mockT, false)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestFalse(t *testing.T) {
+
+	False(t, false)
+
+	mockT := new(MockT)
+	False(mockT, true)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestContains(t *testing.T) {
+
+	Contains(t, "Hello World", "Hello")
+
+	mockT := new(MockT)
+	Contains(mockT, "Hello World", "Salut")
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestNotContains(t *testing.T) {
+
+	NotContains(t, "Hello World", "Hello!")
+
+	mockT := new(MockT)
+	NotContains(mockT, "Hello World", "Hello")
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestPanics(t *testing.T) {
+
+	Panics(t, func() {
+		panic("Panic!")
+	})
+
+	mockT := new(MockT)
+	Panics(mockT, func() {})
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestNotPanics(t *testing.T) {
+
+	NotPanics(t, func() {})
+
+	mockT := new(MockT)
+	NotPanics(mockT, func() {
+		panic("Panic!")
+	})
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestNoError(t *testing.T) {
+
+	NoError(t, nil)
+
+	mockT := new(MockT)
+	NoError(mockT, errors.New("some error"))
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestError(t *testing.T) {
+
+	Error(t, errors.New("some error"))
+
+	mockT := new(MockT)
+	Error(mockT, nil)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestEqualError(t *testing.T) {
+
+	EqualError(t, errors.New("some error"), "some error")
+
+	mockT := new(MockT)
+	EqualError(mockT, errors.New("some error"), "Not some error")
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestEmpty(t *testing.T) {
+
+	Empty(t, "")
+
+	mockT := new(MockT)
+	Empty(mockT, "x")
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestNotEmpty(t *testing.T) {
+
+	NotEmpty(t, "x")
+
+	mockT := new(MockT)
+	NotEmpty(mockT, "")
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestWithinDuration(t *testing.T) {
+
+	a := time.Now()
+	b := a.Add(10 * time.Second)
+
+	WithinDuration(t, a, b, 15*time.Second)
+
+	mockT := new(MockT)
+	WithinDuration(mockT, a, b, 5*time.Second)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestInDelta(t *testing.T) {
+
+	InDelta(t, 1.001, 1, 0.01)
+
+	mockT := new(MockT)
+	InDelta(mockT, 1, 2, 0.5)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestZero(t *testing.T) {
+
+	Zero(t, "")
+
+	mockT := new(MockT)
+	Zero(mockT, "x")
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestNotZero(t *testing.T) {
+
+	NotZero(t, "x")
+
+	mockT := new(MockT)
+	NotZero(mockT, "")
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestJSONEq_EqualSONString(t *testing.T) {
+	mockT := new(MockT)
+	JSONEq(mockT, `{"hello": "world", "foo": "bar"}`, `{"hello": "world", "foo": "bar"}`)
+	if mockT.Failed {
+		t.Error("Check should pass")
+	}
+}
+
+func TestJSONEq_EquivalentButNotEqual(t *testing.T) {
+	mockT := new(MockT)
+	JSONEq(mockT, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
+	if mockT.Failed {
+		t.Error("Check should pass")
+	}
+}
+
+func TestJSONEq_HashOfArraysAndHashes(t *testing.T) {
+	mockT := new(MockT)
+	JSONEq(mockT, "{\r\n\t\"numeric\": 1.5,\r\n\t\"array\": [{\"foo\": \"bar\"}, 1, \"string\", [\"nested\", \"array\", 5.5]],\r\n\t\"hash\": {\"nested\": \"hash\", \"nested_slice\": [\"this\", \"is\", \"nested\"]},\r\n\t\"string\": \"foo\"\r\n}",
+		"{\r\n\t\"numeric\": 1.5,\r\n\t\"hash\": {\"nested\": \"hash\", \"nested_slice\": [\"this\", \"is\", \"nested\"]},\r\n\t\"string\": \"foo\",\r\n\t\"array\": [{\"foo\": \"bar\"}, 1, \"string\", [\"nested\", \"array\", 5.5]]\r\n}")
+	if mockT.Failed {
+		t.Error("Check should pass")
+	}
+}
+
+func TestJSONEq_Array(t *testing.T) {
+	mockT := new(MockT)
+	JSONEq(mockT, `["foo", {"hello": "world", "nested": "hash"}]`, `["foo", {"nested": "hash", "hello": "world"}]`)
+	if mockT.Failed {
+		t.Error("Check should pass")
+	}
+}
+
+func TestJSONEq_HashAndArrayNotEquivalent(t *testing.T) {
+	mockT := new(MockT)
+	JSONEq(mockT, `["foo", {"hello": "world", "nested": "hash"}]`, `{"foo": "bar", {"nested": "hash", "hello": "world"}}`)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestJSONEq_HashesNotEquivalent(t *testing.T) {
+	mockT := new(MockT)
+	JSONEq(mockT, `{"foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestJSONEq_ActualIsNotJSON(t *testing.T) {
+	mockT := new(MockT)
+	JSONEq(mockT, `{"foo": "bar"}`, "Not JSON")
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestJSONEq_ExpectedIsNotJSON(t *testing.T) {
+	mockT := new(MockT)
+	JSONEq(mockT, "Not JSON", `{"foo": "bar", "hello": "world"}`)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestJSONEq_ExpectedAndActualNotJSON(t *testing.T) {
+	mockT := new(MockT)
+	JSONEq(mockT, "Not JSON", "Not JSON")
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}
+
+func TestJSONEq_ArraysOfDifferentOrder(t *testing.T) {
+	mockT := new(MockT)
+	JSONEq(mockT, `["foo", {"hello": "world", "nested": "hash"}]`, `[{ "hello": "world", "nested": "hash"}, "foo"]`)
+	if !mockT.Failed {
+		t.Error("Check should fail")
+	}
+}

vendor/github.com/stretchr/testify/suite/doc.go

@@ -0,0 +1,65 @@
+// Package suite contains logic for creating testing suite structs
+// and running the methods on those structs as tests.  The most useful
+// piece of this package is that you can create setup/teardown methods
+// on your testing suites, which will run before/after the whole suite
+// or individual tests (depending on which interface(s) you
+// implement).
+//
+// A testing suite is usually built by first extending the built-in
+// suite functionality from suite.Suite in testify.  Alternatively,
+// you could reproduce that logic on your own if you wanted (you
+// just need to implement the TestingSuite interface from
+// suite/interfaces.go).
+//
+// After that, you can implement any of the interfaces in
+// suite/interfaces.go to add setup/teardown functionality to your
+// suite, and add any methods that start with "Test" to add tests.
+// Methods that do not match any suite interfaces and do not begin
+// with "Test" will not be run by testify, and can safely be used as
+// helper methods.
+//
+// Once you've built your testing suite, you need to run the suite
+// (using suite.Run from testify) inside any function that matches the
+// identity that "go test" is already looking for (i.e.
+// func(*testing.T)).
+//
+// Regular expression to select test suites specified command-line
+// argument "-run". Regular expression to select the methods
+// of test suites specified command-line argument "-m".
+// Suite object has assertion methods.
+//
+// A crude example:
+//     // Basic imports
+//     import (
+//         "testing"
+//         "github.com/stretchr/testify/assert"
+//         "github.com/stretchr/testify/suite"
+//     )
+//
+//     // Define the suite, and absorb the built-in basic suite
+//     // functionality from testify - including a T() method which
+//     // returns the current testing context
+//     type ExampleTestSuite struct {
+//         suite.Suite
+//         VariableThatShouldStartAtFive int
+//     }
+//
+//     // Make sure that VariableThatShouldStartAtFive is set to five
+//     // before each test
+//     func (suite *ExampleTestSuite) SetupTest() {
+//         suite.VariableThatShouldStartAtFive = 5
+//     }
+//
+//     // All methods that begin with "Test" are run as tests within a
+//     // suite.
+//     func (suite *ExampleTestSuite) TestExample() {
+//         assert.Equal(suite.T(), 5, suite.VariableThatShouldStartAtFive)
+//         suite.Equal(5, suite.VariableThatShouldStartAtFive)
+//     }
+//
+//     // In order for 'go test' to run this suite, we need to create
+//     // a normal test function and pass our suite to suite.Run
+//     func TestExampleTestSuite(t *testing.T) {
+//         suite.Run(t, new(ExampleTestSuite))
+//     }
+package suite

vendor/github.com/stretchr/testify/suite/interfaces.go

@@ -0,0 +1,46 @@
+package suite
+
+import "testing"
+
+// TestingSuite can store and return the current *testing.T context
+// generated by 'go test'.
+type TestingSuite interface {
+	T() *testing.T
+	SetT(*testing.T)
+}
+
+// SetupAllSuite has a SetupSuite method, which will run before the
+// tests in the suite are run.
+type SetupAllSuite interface {
+	SetupSuite()
+}
+
+// SetupTestSuite has a SetupTest method, which will run before each
+// test in the suite.
+type SetupTestSuite interface {
+	SetupTest()
+}
+
+// TearDownAllSuite has a TearDownSuite method, which will run after
+// all the tests in the suite have been run.
+type TearDownAllSuite interface {
+	TearDownSuite()
+}
+
+// TearDownTestSuite has a TearDownTest method, which will run after
+// each test in the suite.
+type TearDownTestSuite interface {
+	TearDownTest()
+}
+
+// BeforeTest has a function to be executed right before the test
+// starts and receives the suite and test names as input
+type BeforeTest interface {
+	BeforeTest(suiteName, testName string)
+}
+
+// AfterTest has a function to be executed right after the test
+// finishes and receives the suite and test names as input
+type AfterTest interface {
+	AfterTest(suiteName, testName string)
+}

vendor/github.com/stretchr/testify/suite/suite.go

@@ -0,0 +1,136 @@
+package suite
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"reflect"
+	"regexp"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+var allTestsFilter = func(_, _ string) (bool, error) { return true, nil }
+var matchMethod = flag.String("testify.m", "", "regular expression to select tests of the testify suite to run")
+
+// Suite is a basic testing suite with methods for storing and
+// retrieving the current *testing.T context.
+type Suite struct {
+	*assert.Assertions
+	require *require.Assertions
+	t       *testing.T
+}
+
+// T retrieves the current *testing.T context.
+func (suite *Suite) T() *testing.T {
+	return suite.t
+}
+
+// SetT sets the current *testing.T context.
+func (suite *Suite) SetT(t *testing.T) {
+	suite.t = t
+	suite.Assertions = assert.New(t)
+	suite.require = require.New(t)
+}
+
+// Require returns a require context for suite.
+func (suite *Suite) Require() *require.Assertions {
+	if suite.require == nil {
+		suite.require = require.New(suite.T())
+	}
+	return suite.require
+}
+
+// Assert returns an assert context for suite.  Normally, you can call
+// `suite.NoError(expected, actual)`, but for situations where the embedded
+// methods are overridden (for example, you might want to override
+// assert.Assertions with require.Assertions), this method is provided so you
+// can call `suite.Assert().NoError()`.
+func (suite *Suite) Assert() *assert.Assertions {
+	if suite.Assertions == nil {
+		suite.Assertions = assert.New(suite.T())
+	}
+	return suite.Assertions
+}
+
+// Run takes a testing suite and runs all of the tests attached
+// to it.
+func Run(t *testing.T, suite TestingSuite) {
+	suite.SetT(t)
+
+	if setupAllSuite, ok := suite.(SetupAllSuite); ok {
+		setupAllSuite.SetupSuite()
+	}
+	defer func() {
+		if tearDownAllSuite, ok := suite.(TearDownAllSuite); ok {
+			tearDownAllSuite.TearDownSuite()
+		}
+	}()
+
+	methodFinder := reflect.TypeOf(suite)
+	tests := []testing.InternalTest{}
+	for index := 0; index < methodFinder.NumMethod(); index++ {
+		method := methodFinder.Method(index)
+		ok, err := methodFilter(method.Name)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "testify: invalid regexp for -m: %s\n", err)
+			os.Exit(1)
+		}
+		if ok {
+			test := testing.InternalTest{
+				Name: method.Name,
+				F: func(t *testing.T) {
+					parentT := suite.T()
+					suite.SetT(t)
+					if setupTestSuite, ok := suite.(SetupTestSuite); ok {
+						setupTestSuite.SetupTest()
+					}
+					if beforeTestSuite, ok := suite.(BeforeTest); ok {
+						beforeTestSuite.BeforeTest(methodFinder.Elem().Name(), method.Name)
+					}
+					defer func() {
+						if afterTestSuite, ok := suite.(AfterTest); ok {
+							afterTestSuite.AfterTest(methodFinder.Elem().Name(), method.Name)
+						}
+						if tearDownTestSuite, ok := suite.(TearDownTestSuite); ok {
+							tearDownTestSuite.TearDownTest()
+						}
+						suite.SetT(parentT)
+					}()
+					method.Func.Call([]reflect.Value{reflect.ValueOf(suite)})
+				},
+			}
+			tests = append(tests, test)
+		}
+	}
+	runTests(t, tests)
+}
+
+func runTests(t testing.TB, tests []testing.InternalTest) {
+	r, ok := t.(runner)
+	if !ok { // backwards compatibility with Go 1.6 and below
+		if !testing.RunTests(allTestsFilter, tests) {
+			t.Fail()
+		}
+		return
+	}
+
+	for _, test := range tests {
+		r.Run(test.Name, test.F)
+	}
+}
+
+// Filtering method according to set regular expression
+// specified command-line argument -m
+func methodFilter(name string) (bool, error) {
+	if ok, _ := regexp.MatchString("^Test", name); !ok {
+		return false, nil
+	}
+	return regexp.MatchString(*matchMethod, name)
+}
+
+type runner interface {
+	Run(name string, f func(t *testing.T)) bool
+}

vendor/github.com/stretchr/testify/suite/suite_test.go

@@ -0,0 +1,294 @@
+package suite
+
+import (
+	"errors"
+	"io/ioutil"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+// SuiteRequireTwice is intended to test the usage of suite.Require in two
+// different tests
+type SuiteRequireTwice struct{ Suite }
+
+// TestSuiteRequireTwice checks for regressions of issue #149 where
+// suite.requirements was not initialised in suite.SetT()
+// A regression would result on these tests panicking rather than failing.
+func TestSuiteRequireTwice(t *testing.T) {
+	ok := testing.RunTests(
+		allTestsFilter,
+		[]testing.InternalTest{{
+			Name: "TestSuiteRequireTwice",
+			F: func(t *testing.T) {
+				suite := new(SuiteRequireTwice)
+				Run(t, suite)
+			},
+		}},
+	)
+	assert.Equal(t, false, ok)
+}
+
+func (s *SuiteRequireTwice) TestRequireOne() {
+	r := s.Require()
+	r.Equal(1, 2)
+}
+
+func (s *SuiteRequireTwice) TestRequireTwo() {
+	r := s.Require()
+	r.Equal(1, 2)
+}
+
+// This suite is intended to store values to make sure that only
+// testing-suite-related methods are run.  It's also a fully
+// functional example of a testing suite, using setup/teardown methods
+// and a helper method that is ignored by testify.  To make this look
+// more like a real world example, all tests in the suite perform some
+// type of assertion.
+type SuiteTester struct {
+	// Include our basic suite logic.
+	Suite
+
+	// Keep counts of how many times each method is run.
+	SetupSuiteRunCount    int
+	TearDownSuiteRunCount int
+	SetupTestRunCount     int
+	TearDownTestRunCount  int
+	TestOneRunCount       int
+	TestTwoRunCount       int
+	NonTestMethodRunCount int
+
+	SuiteNameBefore []string
+	TestNameBefore  []string
+
+	SuiteNameAfter []string
+	TestNameAfter  []string
+
+	TimeBefore []time.Time
+	TimeAfter  []time.Time
+}
+
+type SuiteSkipTester struct {
+	// Include our basic suite logic.
+	Suite
+
+	// Keep counts of how many times each method is run.
+	SetupSuiteRunCount    int
+	TearDownSuiteRunCount int
+}
+
+// The SetupSuite method will be run by testify once, at the very
+// start of the testing suite, before any tests are run.
+func (suite *SuiteTester) SetupSuite() {
+	suite.SetupSuiteRunCount++
+}
+
+func (suite *SuiteTester) BeforeTest(suiteName, testName string) {
+	suite.SuiteNameBefore = append(suite.SuiteNameBefore, suiteName)
+	suite.TestNameBefore = append(suite.TestNameBefore, testName)
+	suite.TimeBefore = append(suite.TimeBefore, time.Now())
+}
+
+func (suite *SuiteTester) AfterTest(suiteName, testName string) {
+	suite.SuiteNameAfter = append(suite.SuiteNameAfter, suiteName)
+	suite.TestNameAfter = append(suite.TestNameAfter, testName)
+	suite.TimeAfter = append(suite.TimeAfter, time.Now())
+}
+
+func (suite *SuiteSkipTester) SetupSuite() {
+	suite.SetupSuiteRunCount++
+	suite.T().Skip()
+}
+
+// The TearDownSuite method will be run by testify once, at the very
+// end of the testing suite, after all tests have been run.
+func (suite *SuiteTester) TearDownSuite() {
+	suite.TearDownSuiteRunCount++
+}
+
+func (suite *SuiteSkipTester) TearDownSuite() {
+	suite.TearDownSuiteRunCount++
+}
+
+// The SetupTest method will be run before every test in the suite.
+func (suite *SuiteTester) SetupTest() {
+	suite.SetupTestRunCount++
+}
+
+// The TearDownTest method will be run after every test in the suite.
+func (suite *SuiteTester) TearDownTest() {
+	suite.TearDownTestRunCount++
+}
+
+// Every method in a testing suite that begins with "Test" will be run
+// as a test.  TestOne is an example of a test.  For the purposes of
+// this example, we've included assertions in the tests, since most
+// tests will issue assertions.
+func (suite *SuiteTester) TestOne() {
+	beforeCount := suite.TestOneRunCount
+	suite.TestOneRunCount++
+	assert.Equal(suite.T(), suite.TestOneRunCount, beforeCount+1)
+	suite.Equal(suite.TestOneRunCount, beforeCount+1)
+}
+
+// TestTwo is another example of a test.
+func (suite *SuiteTester) TestTwo() {
+	beforeCount := suite.TestTwoRunCount
+	suite.TestTwoRunCount++
+	assert.NotEqual(suite.T(), suite.TestTwoRunCount, beforeCount)
+	suite.NotEqual(suite.TestTwoRunCount, beforeCount)
+}
+
+func (suite *SuiteTester) TestSkip() {
+	suite.T().Skip()
+}
+
+// NonTestMethod does not begin with "Test", so it will not be run by
+// testify as a test in the suite.  This is useful for creating helper
+// methods for your tests.
+func (suite *SuiteTester) NonTestMethod() {
+	suite.NonTestMethodRunCount++
+}
+
+// TestRunSuite will be run by the 'go test' command, so within it, we
+// can run our suite using the Run(*testing.T, TestingSuite) function.
+func TestRunSuite(t *testing.T) {
+	suiteTester := new(SuiteTester)
+	Run(t, suiteTester)
+
+	// Normally, the test would end here.  The following are simply
+	// some assertions to ensure that the Run function is working as
+	// intended - they are not part of the example.
+
+	// The suite was only run once, so the SetupSuite and TearDownSuite
+	// methods should have each been run only once.
+	assert.Equal(t, suiteTester.SetupSuiteRunCount, 1)
+	assert.Equal(t, suiteTester.TearDownSuiteRunCount, 1)
+
+	assert.Equal(t, len(suiteTester.SuiteNameAfter), 3)
+	assert.Equal(t, len(suiteTester.SuiteNameBefore), 3)
+	assert.Equal(t, len(suiteTester.TestNameAfter), 3)
+	assert.Equal(t, len(suiteTester.TestNameBefore), 3)
+
+	assert.Contains(t, suiteTester.TestNameAfter, "TestOne")
+	assert.Contains(t, suiteTester.TestNameAfter, "TestTwo")
+	assert.Contains(t, suiteTester.TestNameAfter, "TestSkip")
+
+	assert.Contains(t, suiteTester.TestNameBefore, "TestOne")
+	assert.Contains(t, suiteTester.TestNameBefore, "TestTwo")
+	assert.Contains(t, suiteTester.TestNameBefore, "TestSkip")
+
+	for _, suiteName := range suiteTester.SuiteNameAfter {
+		assert.Equal(t, "SuiteTester", suiteName)
+	}
+
+	for _, suiteName := range suiteTester.SuiteNameBefore {
+		assert.Equal(t, "SuiteTester", suiteName)
+	}
+
+	for _, when := range suiteTester.TimeAfter {
+		assert.False(t, when.IsZero())
+	}
+
+	for _, when := range suiteTester.TimeBefore {
+		assert.False(t, when.IsZero())
+	}
+
+	// There are three test methods (TestOne, TestTwo, and TestSkip), so
+	// the SetupTest and TearDownTest methods (which should be run once for
+	// each test) should have been run three times.
+	assert.Equal(t, suiteTester.SetupTestRunCount, 3)
+	assert.Equal(t, suiteTester.TearDownTestRunCount, 3)
+
+	// Each test should have been run once.
+	assert.Equal(t, suiteTester.TestOneRunCount, 1)
+	assert.Equal(t, suiteTester.TestTwoRunCount, 1)
+
+	// Methods that don't match the test method identifier shouldn't
+	// have been run at all.
+	assert.Equal(t, suiteTester.NonTestMethodRunCount, 0)
+
+	suiteSkipTester := new(SuiteSkipTester)
+	Run(t, suiteSkipTester)
+
+	// The suite was only run once, so the SetupSuite and TearDownSuite
+	// methods should have each been run only once, even though SetupSuite
+	// called Skip()
+	assert.Equal(t, suiteSkipTester.SetupSuiteRunCount, 1)
+	assert.Equal(t, suiteSkipTester.TearDownSuiteRunCount, 1)
+
+}
+
+func TestSuiteGetters(t *testing.T) {
+	suite := new(SuiteTester)
+	suite.SetT(t)
+	assert.NotNil(t, suite.Assert())
+	assert.Equal(t, suite.Assertions, suite.Assert())
+	assert.NotNil(t, suite.Require())
+	assert.Equal(t, suite.require, suite.Require())
+}
+
+type SuiteLoggingTester struct {
+	Suite
+}
+
+func (s *SuiteLoggingTester) TestLoggingPass() {
+	s.T().Log("TESTLOGPASS")
+}
+
+func (s *SuiteLoggingTester) TestLoggingFail() {
+	s.T().Log("TESTLOGFAIL")
+	assert.NotNil(s.T(), nil) // expected to fail
+}
+
+type StdoutCapture struct {
+	oldStdout *os.File
+	readPipe  *os.File
+}
+
+func (sc *StdoutCapture) StartCapture() {
+	sc.oldStdout = os.Stdout
+	sc.readPipe, os.Stdout, _ = os.Pipe()
+}
+
+func (sc *StdoutCapture) StopCapture() (string, error) {
+	if sc.oldStdout == nil || sc.readPipe == nil {
+		return "", errors.New("StartCapture not called before StopCapture")
+	}
+	os.Stdout.Close()
+	os.Stdout = sc.oldStdout
+	bytes, err := ioutil.ReadAll(sc.readPipe)
+	if err != nil {
+		return "", err
+	}
+	return string(bytes), nil
+}
+
+func TestSuiteLogging(t *testing.T) {
+	suiteLoggingTester := new(SuiteLoggingTester)
+	capture := StdoutCapture{}
+	internalTest := testing.InternalTest{
+		Name: "SomeTest",
+		F: func(subT *testing.T) {
+			Run(subT, suiteLoggingTester)
+		},
+	}
+	capture.StartCapture()
+	testing.RunTests(allTestsFilter, []testing.InternalTest{internalTest})
+	output, err := capture.StopCapture()
+	require.NoError(t, err, "Got an error trying to capture stdout and stderr!")
+	require.NotEmpty(t, output, "output content must not be empty")
+
+	// Failed tests' output is always printed
+	assert.Contains(t, output, "TESTLOGFAIL")
+
+	if testing.Verbose() {
+		// In verbose mode, output from successful tests is also printed
+		assert.Contains(t, output, "TESTLOGPASS")
+	} else {
+		assert.NotContains(t, output, "TESTLOGPASS")
+	}
+}

vendor/github.com/tsuyoshiwada/go-gitcmd/.gitignore

@@ -0,0 +1,58 @@
+
+# Created by https://www.gitignore.io/api/osx,macos,go
+
+### Go ###
+# Binaries for programs and plugins
+*.exe
+*.dll
+*.so
+*.dylib
+
+# Test binary, build with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
+.glide/
+
+### macOS ###
+*.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### OSX ###
+
+# Icon must end with two \r
+
+# Thumbnails
+
+# Files that might appear in the root of a volume
+
+# Directories potentially created on remote AFP share
+
+
+# End of https://www.gitignore.io/api/osx,macos,go

vendor/github.com/tsuyoshiwada/go-gitcmd/.travis.yml

@@ -0,0 +1,9 @@
+language: go
+sudo: false
+go:
+  - 1.9
+script:
+  - go test -v
+branches:
+  only:
+    - master

vendor/github.com/tsuyoshiwada/go-gitcmd/CHANGELOG.md

@@ -0,0 +1,6 @@
+## 0.0.1
+
+> 2018-02-05
+
+* First Release :tada:
+