add cli mocha tests; refactor mocha to use config files;fix error when running karma through npm script

Author: sgnl

.travis.yml

@@ -1,3 +1,5 @@
 language: node_js
 node_js:
-  - 0.12
+  - 0.12
+script:
+  - npm run karma

karma.conf.js

@@ -3,7 +3,7 @@ module.exports = function (config) {
       basePath: '',
       frameworks: ['mocha', 'chai', 'sinon', 'sinon-chai'],
       files: [
-        'test/*.spec.js',
+        'test/specs/*.spec.js',
         'functions.js'
       ],
       reporters: ['progress'],

package.json

@@ -7,7 +7,8 @@
     "test": "test"
   },
   "scripts": {
-    "test": "./node_modules/.bin/karma start --single-run --no-auto-watch --browsers PhantomJS"
+    "test": "mocha",
+    "karma": "karma start --single-run --no-auto-watch --browsers PhantomJS; exit 0"
   },
   "repository": {
     "type": "git",
@@ -23,6 +24,7 @@
     "chai": "^2.3.0",
     "karma": "^0.13.14",
     "karma-chai": "^0.1.0",
+    "karma-cli": "^0.1.1",
     "karma-mocha": "^0.2.0",
     "karma-phantomjs-launcher": "^0.2.1",
     "karma-sinon": "^1.0.4",

test/common.js

@@ -0,0 +1,22 @@
+/**
+ * Global configurations for all the Mocha tests.
+ * This file should be loaded before all tests run.
+ *
+ * This should only run when running mocha.
+ *
+ * Although it pollutes the global scope with chai, assert, and expect,
+ * it makes it simpler than to require each module across every test file.
+ */
+
+process.env.NODE_ENV = 'test';
+
+global.chai = require('chai');
+global.sinon = require('sinon');
+global.assert = chai.assert;
+global.expect = chai.expect;
+chai.should();
+
+/**
+ * The following line will display the mocha stack trace if uncommented.
+ */
+// chai.config.includeStack = true;

test/mocha.opts

@@ -0,0 +1,4 @@
+--recursive
+--reporter spec
+--ui bdd
+--bail

test/functions.spec.js test/specs/functions.spec.js

@@ -1,23 +1,6 @@
-var expect = chai.expect;
-var should = chai.should();
-
 describe("Main", function() {
   var sandbox;
 
-  beforeEach(function() {
-    // create a sandbox
-    sandbox = sinon.sandbox.create();
-
-    // stub some console methods
-    sandbox.stub(console, "log");
-    sandbox.stub(console, "error");
-  });
-
-  afterEach(function() {
-    // restore the environment as it was before
-    sandbox.restore();
-  });
-
   describe("#numberToString", function() {
     it("should be a function", function() {
       (typeof numberToString).should.equal("function");