Added Karma integration

This commit introduces Karma test runner which allows running
Jasmine-based tests in browsers.

Change-Id: I11652f31fb56e9f6ee0dbfd3359259bb3e4f68fd
Co-Authored-By: Michael Krotscheck <krotscheck@gmail.com>

karma.conf.babel.js

@@ -0,0 +1,65 @@
+import webpackConfig from './webpack.config.babel';
+
+export default (config) => {
+  config.set({
+
+    // base path that will be used to resolve all patterns (eg. files, exclude)
+    basePath: '',
+
+    // frameworks to use
+    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
+    frameworks: ['jasmine'],
+
+    // list of files / patterns to load in the browser
+    files: [
+      'test/unit/**/*.js'
+    ],
+
+    // list of files to exclude
+    exclude: [],
+
+    // preprocess matching files before serving them to the browser
+    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
+    preprocessors: {
+      'test/unit/**/*.js': ['webpack']
+    },
+
+    // test results reporter to use
+    // possible values: 'dots', 'progress'
+    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
+    reporters: ['progress'],
+
+    // web server port
+    port: 9876,
+
+    // enable / disable colors in the output (reporters and logs)
+    colors: false,
+
+    // level of logging
+    logLevel: config.LOG_INFO,
+
+    // enable / disable watching file and executing tests whenever any file changes
+    autoWatch: false,
+
+    // Execute tests once, then exit.
+    singleRun: true,
+
+    // start these browsers
+    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
+    browsers: ['Firefox', 'Chrome'],
+
+    // Concurrency level
+    // how many browser should be started simultaneous
+    concurrency: Infinity,
+
+    // We simulate a fully compiled browser application by using webpack. Since we only really
+    // use this during testing, the configuration is kept here.
+    webpack: webpackConfig,
+
+    webpackMiddleware: {
+      // Don't spam the console.
+      noInfo: true
+    }
+
+  });
+};

karma.conf.js

@@ -0,0 +1,2 @@
+require('babel-register');
+module.exports = require('./karma.conf.babel').default;

package.json

@@ -4,7 +4,9 @@
   "description": "JavaScript API library for OpenStack.",
   "main": "dist/index.js",
   "scripts": {
-    "test": "jasmine JASMINE_CONFIG_PATH=test/unit/jasmine.json",
+    "test": "npm run test:node; npm run test:browser",
+    "test:node": "jasmine JASMINE_CONFIG_PATH=test/unit/jasmine.json",
+    "test:browser": "karma start",
     "lint": "eslint ./",
     "prepublish": "nsp check; npm run build",
     "build": "babel src -d dist && webpack",
@@ -33,6 +35,11 @@
     "eslint": "^2.4.0",
     "eslint-config-openstack": "2.0.0",
     "jasmine": "^2.4.1",
+    "karma": "^1.1.1",
+    "karma-chrome-launcher": "^1.0.1",
+    "karma-firefox-launcher": "^1.0.0",
+    "karma-jasmine": "^1.0.2",
+    "karma-webpack": "^1.7.0",
     "nsp": "^2.4.0",
     "webpack": "^1.13.1"
   },