add webpack

karma.conf.js

@@ -1,8 +1,17 @@
+const webpackEnv = {test: true}
+const webpackConfig = require('./webpack.config')(webpackEnv)
+const fileGlob = 'src/js/**/*.test.js'
+
 module.exports = function setKarmaConfig(config) {
   config.set({
     basePath: '',
     frameworks: ['mocha', 'chai'],
-    files: ['src/js/**/*.test.js'],
+    files: [fileGlob],
+    preprocessors: {
+      [fileGlob]: ['webpack']
+    },
+    webpack: webpackConfig,
+    webpackMiddleware: {noInfo: true},
     reporters: ['progress'],
     port: 9876,
     colors: true,

package.json

@@ -22,6 +22,7 @@
     "karma-chai": "0.1.0",
     "karma-chrome-launcher": "1.0.1",
     "karma-mocha": "1.0.1",
+    "karma-webpack": "1.7.0",
     "mocha": "2.5.3",
     "npm-run-all": "1.8.0",
     "opt-cli": "1.4.2",

src/js/controller.test.js

@@ -1,8 +1,7 @@
-describe('test', () => {
-  it('works', () => {
-    expect(true).to.be.true
-  })
-  it('works again', () => {
-    expect('hi').to.equal('hi')
+import Controller from './controller'
+
+describe('controller', () => {
+  it('exists', () => {
+    expect(Controller).to.exist
   })
 })