tox: Rename extra to custom

.travis/config.sh

@@ -2,12 +2,3 @@
 export LSR_MOLECULE_DEPS='-rmolecule_requirements.txt'
 
 LSR_EXTRA_PACKAGES='python3-selinux'
-
-case "${TRAVIS_PYTHON_VERSION}" in
-  3.6|"")
-    # Set these also if we are running locally:
-    export LSR_TEXTRA_DEPS='PyYAML'
-    export LSR_TEXTRA_DIR='tests'
-    export LSR_TEXTRA_CMD='./ensure_non_running_provider.py'
-    ;;
-esac

.travis/custom.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+# SPDX-License-Identifier: MIT
+
+# This script is executed with two arguments passed to it:
+#
+#   $1 - path to environment python (python used inside virtual environment
+#        created by tox)
+#   $2 - path to system python (python 3.x installed on the system)
+
+set -e
+
+ME=$(basename $0)
+SCRIPTDIR=$(readlink -f $(dirname $0))
+TOPDIR=$(readlink -f ${SCRIPTDIR}/..)
+
+# Include library and config:
+. ${SCRIPTDIR}/utils.sh
+. ${SCRIPTDIR}/config.sh
+
+# Sanitize arguments (see https://github.com/tox-dev/tox/issues/1463):
+ENVPYTHON=$(readlink -f $1)
+SYSPYTHON=$(readlink -f $2)
+shift 2
+
+# Write your custom commands here that should be run when `tox -e custom`:
+if [[ -z "${TRAVIS}" ]] || lsr_check_python_version ${ENVPYTHON} -eq '3.6'; then
+  (set -x; cd ${TOPDIR}/tests; ${ENVPYTHON} ./ensure_non_running_provider.py)
+fi

custom_requirements.txt

@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: MIT
+
+# Write requirements for running your custom commands in tox here:
+PyYAML

tox.ini

@@ -3,7 +3,7 @@
 envlist =
     black, pylint, flake8,
     py{26,27,36,37,38},
-    extra
+    custom
 skipsdist = true
 skip_missing_interpreters = true
 
@@ -17,6 +17,7 @@ deps =
     py26: pytest
 
 [base]
+system_python = /usr/bin/python3
 passenv = *
 setenv =
     PYTHONPATH = {toxinidir}/library:{toxinidir}/module_utils
@@ -24,6 +25,8 @@ setenv =
 changedir = {toxinidir}/tests
 covtarget = {toxinidir}/library --cov {toxinidir}/module_utils
 pytesttarget = .
+whitelist_externals =
+    bash
 
 [testenv:py26]
 envdir = {toxworkdir}/env-{env:TRAVIS_PYTHON_VERSION:2.6}
@@ -197,39 +200,15 @@ commands =
     {[testenv:molecule_syntax]commands}
     {[testenv:molecule_test]commands}
 
-# Here we provide a way how a role can add its custom command to be run. Such
-# extra command is run at the end of each testenv run and is driven by
-# environment variables. Involved environment variables are:
-#
-#   LSR_TEXTRA_DEPS
-#     - contains dependency needed by commands to run smoothly; if more than
-#       one dependency is needed, use external file together with '-r' option
-#       (see PEP 508)
-#
-#   LSR_TEXTRA_DIR
-#     - directory to which to cd
-#
-#   LSR_TEXTRA_CMD
-#     - custom command to be run
-#
-# Example: `network` system role need to run `./tests/ensure_non_running_provider.py`
-#          to check for the existence of `*_provider.yml` playbooks. The script
-#          is run in Python 3.6.
-#
-#          To make this possible, we add to `.travis/config.sh` a snippet:
-#
-#              export LSR_TEXTRA_DEPS='PyYAML'
-#              export LSR_TEXTRA_DIR='tests'
-#              export LSR_TEXTRA_CMD='./ensure_non_running_provider.py'
-#
-[testenv:extra]
-envdir = {toxworkdir}/env-{env:TRAVIS_PYTHON_VERSION:extra}
+[testenv:custom]
+envdir = {toxworkdir}/env-{env:TRAVIS_PYTHON_VERSION:custom}
 deps =
-    {env:LSR_TEXTRA_DEPS:}
+    -rcustom_requirements.txt
 passenv = *
-changedir = {toxinidir}/{env:LSR_TEXTRA_DIR:.}
+whitelist_externals =
+    {[base]whitelist_externals}
 commands =
-    {env:LSR_TEXTRA_CMD:python --version}
+    bash {toxinidir}/.travis/custom.sh {envpython} {[base]system_python}
 
 [pytest]
 addopts = -rxs
@@ -248,9 +227,9 @@ max-line-length = 88
 
 [travis]
 python =
-  2.6: py26,extra
-  2.7: py27,flake8,pylint,extra
-  3.5: coveralls,molecule,extra
-  3.6: py36,black,extra
-  3.7: py37,extra
-  3.8: py38,extra
+  2.6: py26,custom
+  2.7: py27,flake8,pylint,custom
+  3.5: coveralls,molecule,custom
+  3.6: py36,black,custom
+  3.7: py37,custom
+  3.8: py38,custom