init Karma

karma.conf.js

@@ -0,0 +1,15 @@
+module.exports = function setKarmaConfig(config) {
+  config.set({
+    basePath: '',
+    frameworks: ['mocha'],
+    files: ['src/js/**/*.test.js'],
+    reporters: ['progress'],
+    port: 9876,
+    colors: true,
+    logLevel: config.LOG_INFO,
+    autoWatch: false,
+    browsers: ['Chrome'],
+    singleRun: true,
+    concurrency: Infinity
+  })
+}

package.json

@@ -17,6 +17,10 @@
     "eslint-config-kentcdodds": "6.2.1",
     "eslint-loader": "1.3.0",
     "ghooks": "1.2.1",
+    "karma": "0.13.22",
+    "karma-chrome-launcher": "1.0.1",
+    "karma-mocha": "1.0.1",
+    "mocha": "2.5.3",
     "npm-run-all": "1.8.0",
     "opt-cli": "1.4.2",
     "rimraf": "2.5.2",
@@ -31,6 +35,8 @@
     }
   },
   "scripts": {
+    "test": "karma start",
+    "watch:test": "npm test -- --auto-watch --no-single-run",
     "validate": "npm-run-all --parallel validate-webpack:* lint",
     "validate-webpack:dev": "webpack-validator webpack.config.js --env.dev",
     "validate-webpack:prod": "webpack-validator webpack.config.js --env.prod",

src/js/controller.test.js

@@ -0,0 +1,8 @@
+describe('test', () => {
+  it('works', () => {
+    // test stuff
+  })
+  it('works again', () => {
+    // more tests
+  })
+})