Update testing setup

This commit does a few things:
  - Converts to bundling tests with webpack
  - Starts using `expect` for assertions
  - Updates the version of several testing libraries
  - Allows tests to be written using ES2015 and beyond

closes reactjs#285

karma.conf.js

@@ -3,25 +3,27 @@ module.exports = function(config) {
 
     basePath: '',
 
-    frameworks: ['mocha', 'browserify'],
+    frameworks: ['mocha'],
 
     files: [
-      'specs/main.js'
+      'specs/spec_index.js'
     ],
 
-    exclude: [],
-
     preprocessors: {
-      'specs/main.js': ['browserify']
+      'specs/spec_index.js': [ 'webpack', 'sourcemap' ]
     },
 
-    browserify: {
-      transform: ['envify'],
-      watch: true,
-      debug: true
+    webpack: require('./webpack.test.config'),
+
+    webpackMiddleware: {
+      stats: 'errors-only'
     },
 
-    reporters: ['progress'],
+    reporters: ['mocha'],
+
+    mochaReporter: {
+      showDiff: true
+    },
 
     port: 9876,
 
@@ -31,10 +33,10 @@ module.exports = function(config) {
 
     autoWatch: true,
 
-    browsers: ['Chrome'],
+    browsers: [ (process.env.CONTINUOUS_INTEGRATION) ? 'Firefox' : 'Chrome' ],
 
     captureTimeout: 60000,
 
-    singleRun: true
+    singleRun: (process.env.CONTINUOUS_INTEGRATION)
   });
 };

package.json

@@ -13,7 +13,7 @@
     "example": "examples"
   },
   "scripts": {
-    "test": "scripts/test --browsers Firefox",
+    "test": "NODE_ENV=test karma start",
     "start": "scripts/dev-examples",
     "docs": "npm-run-all docs:*",
     "docs-dev": "npm-run-all docs:clean docs:prepare docs:build:watch",
@@ -33,23 +33,24 @@
     "babel-preset-es2015": "^6.6.0",
     "babel-preset-react": "^6.5.0",
     "envify": "^3.4.1",
-    "expect": "1.10.0",
+    "expect": "^1.20.2",
     "gitbook-cli": "^2.3.0",
-    "karma": "^0.13.22",
-    "karma-browserify": "^4.2.1",
-    "karma-chrome-launcher": "0.2.0",
-    "karma-cli": "0.1.0",
-    "karma-firefox-launcher": "0.1.6",
-    "karma-mocha": "0.2.0",
-    "karma-safari-launcher": "^0.1.1",
-    "mocha": "2.3.3",
+    "karma": "^1.3.0",
+    "karma-chrome-launcher": "2.0.0",
+    "karma-cli": "1.0.1",
+    "karma-firefox-launcher": "1.0.0",
+    "karma-mocha": "^1.3.0",
+    "karma-mocha-reporter": "^2.2.1",
+    "karma-sourcemap-loader": "^0.3.7",
+    "karma-webpack": "^1.8.1",
+    "mocha": "3.2.0",
     "npm-run-all": "^3.1.2",
     "react": "^15.0.0",
     "react-addons-test-utils": "^15.0.0",
     "react-dom": "^15.0.0",
     "rf-release": "0.4.0",
     "rimraf": "^2.5.4",
-    "sinon": "^1.17.3",
+    "sinon": "next",
     "uglify-js": "2.4.24",
     "webpack": "^1.12.14",
     "webpack-dev-server": "1.11.0"
@@ -74,4 +75,4 @@
     "modal",
     "dialog"
   ]
-}
+}