refactor(config) manage

lib/server/config.js

@@ -59,15 +59,13 @@ module.exports.listen   = function(socket, authCheck) {
 };
 
 function manage(key, value) {
-    var result;
+    if (!key)
+        return;
+        
+    if (value === undefined)
+        return config[key];
     
-    if (key)
-        if (value === undefined)
-            result      = config[key];
-        else
-            config[key] = value;
-    
-    return result;
+    config[key] = value;
 }
 
 function save(callback) {

test/lib/config.js

@@ -0,0 +1,44 @@
+'use strict';
+
+const test = require('tape');
+const root = '../../';
+const config = require(root + 'lib/server/config');
+
+const promisify = require('es6-promisify');
+const pullout = require('pullout');
+const request = require('request');
+
+const before = require('../before');
+
+test('config: manage', (t) => {
+    t.equal(undefined, config(), 'should return "undefined"');
+    t.end();
+});
+
+test('config: manage: get', (t) => {
+    const editor = 'deepword';
+    const conf = {
+        editor
+    };
+    
+    before({config: conf}, (port, after) => {
+        t.equal(editor, config('editor'), 'should get config');
+        t.end();
+        after();
+    });
+});
+
+test('config: manage: get', (t) => {
+    const editor = 'deepword';
+    const conf = {
+        editor
+    };
+    
+    before({config: conf}, (port, after) => {
+        config('editor', 'dword');
+        t.equal('dword', config('editor'), 'should set config');
+        t.end();
+        after();
+    });
+});
+