feat(test): karma integration and unit test sample

Closes #10

addon/ng2/blueprints/ng2/files/karma-test-shim.js

@@ -0,0 +1,45 @@
+Error.stackTraceLimit = Infinity;
+
+jasmine.DEFAULT_TIMEOUT_INTERVAL = 1000;
+
+__karma__.loaded = function() {};
+
+System.config({
+  packages: {
+    'base/dist/app': {
+      defaultExtension: false,
+      format: 'register',
+      map: Object.keys(window.__karma__.files)
+        .filter(onlyAppFiles)
+        .reduce(function(pathsMapping, appPath) {
+          var moduleName = appPath.replace(/^\/base\/dist\/app\//, './').replace(/\.js$/, '');
+          pathsMapping[moduleName] = appPath + '?' + window.__karma__.files[appPath]
+        return pathsMapping;
+      }, {})
+    }
+  }
+});
+
+System.import('angular2/src/core/dom/browser_adapter').then(function(browser_adapter) {
+  // TODO: once beta is out we should change this code to use a "test platform"
+  browser_adapter.BrowserDomAdapter.makeCurrent();
+}).then(function() {
+  return Promise.all(
+    Object.keys(window.__karma__.files)
+      .filter(onlySpecFiles)
+      .map(function(moduleName) {
+        return System.import(moduleName);
+      }));
+}).then(function() {
+  __karma__.start();
+}, function(error) {
+  __karma__.error(error.stack || error);
+});
+
+function onlyAppFiles(filePath) {
+  return /^\/base\/dist\/app\/(?!spec)([a-z0-9]+)\.js$/.test(filePath);
+}
+
+function onlySpecFiles(path) {
+  return /\.spec\.js$/.test(path);
+}

addon/ng2/blueprints/ng2/files/karma.conf.js

@@ -0,0 +1,38 @@
+module.exports = function(config) {
+  config.set({
+    basePath: '',
+    frameworks: ['jasmine'],
+    files: [
+      {pattern: 'node_modules/systemjs/dist/system.src.js', included: true, watched: true},
+      {pattern: 'node_modules/angular2/bundles/angular2.js', included: true, watched: true},
+      {pattern: 'node_modules/angular2/bundles/testing.js', included: true, watched: true},
+
+      {pattern: 'karma-test-shim.js', included: true, watched: true},
+
+      // paths loaded via module imports
+      {pattern: 'dist/**/*.js', included: false, watched: true},
+
+      // paths loaded via Angular's component compiler
+      // (these paths need to be rewritten, see proxies section)
+      {pattern: 'dist/**/*.html', included: false, watched: true},
+      {pattern: 'dist/**/*.css', included: false, watched: true},
+
+      // paths to support debugging with source maps in dev tools
+      {pattern: 'dist/**/*.ts', included: false, watched: false},
+      {pattern: 'dist/**/*.js.map', included: false, watched: false}
+    ],
+    proxies: {
+      // required for component assests fetched by Angular's compiler
+      "/app/": "/base/dist/app/"
+    },
+    exclude: [],
+    preprocessors: {},
+    reporters: ['progress'],
+    port: 9876,
+    colors: true,
+    logLevel: config.LOG_INFO,
+    autoWatch: true,
+    browsers: ['Chrome'],
+    singleRun: false
+  });
+};

addon/ng2/blueprints/ng2/files/package.json

@@ -9,6 +9,10 @@
   "devDependencies": {
     "angular-cli": "0.0.*",
     "angular-cli-github-pages": "^0.2.0",
-    "ember-cli-inject-live-reload": "^1.3.0"
+    "ember-cli-inject-live-reload": "^1.3.0",
+    "jasmine-core": "^2.3.4",
+    "karma": "^0.13.15",
+    "karma-chrome-launcher": "^0.2.1",
+    "karma-jasmine": "^0.3.6"
   }
 }

addon/ng2/blueprints/ng2/files/src/app/__name__.spec.ts

@@ -0,0 +1,22 @@
+import {describe, it, expect, beforeEachProviders, inject} from 'angular2/testing';
+import {<%= jsComponentName %>App} from '../app/<%= htmlComponentName %>';
+
+beforeEachProviders(() => [<%= jsComponentName %>App]);
+
+describe('App: <%= jsComponentName %>', () => {
+  it('should have the `defaultMeaning` as 42', inject([<%= jsComponentName %>App], (app) => {
+    expect(app.defaultMeaning).toBe(42);
+  }));
+
+  describe('#meaningOfLife', () => {
+    it('should get the meaning of life', inject([<%= jsComponentName %>App], (app) => {
+      expect(app.meaningOfLife()).toBe('The meaning of life is 42');
+      expect(app.meaningOfLife(22)).toBe('The meaning of life is 22');
+    }));
+  });
+
+  it('should be almost passing', function() {
+    expect(1 + 1).toBe(1);
+  });
+});
+

addon/ng2/blueprints/ng2/files/src/app/__name__.ts

@@ -9,7 +9,9 @@ import {Component} from 'angular2/angular2';
   pipes: []
 })
 export class <%= jsComponentName %>App {
-
-  constructor() {}
-
+  defaultMeaning: number = 42;
+
+  meaningOfLife(meaning) {
+    return `The meaning of life is ${meaning || this.defaultMeaning}`;
+  }
 }