Adding tests to Chapter_02

Chapter_02/karma.conf.js

@@ -0,0 +1,20 @@
+module.exports = function(config) {
+  config.set({
+    basePath: '.',
+    frameworks: ['dart-unittest'],
+
+    // list of files / patterns to load in the browser
+    files: [
+      'main_test.dart',
+      {pattern: '**/*.dart', watched: false, included: false, served: true},
+      {pattern: 'packages/browser/dart.js', watched: false, included: true, served: true},
+      {pattern: 'packages/browser/interop.js', watched: false, included: true, served: true},
+    ],
+
+    autoWatch: true,
+
+    plugins: [
+      'karma-dart'
+    ],
+  });
+};

Chapter_02/main_test.dart

@@ -0,0 +1,35 @@
+library main_test;
+
+import 'package:unittest/unittest.dart';
+import 'package:di/di.dart';
+import 'package:di/dynamic_injector.dart';
+import 'package:angular/angular.dart';
+import 'package:angular/mock/module.dart';
+
+import 'main.dart';
+
+main() {
+  group('recipe-book', () {
+    TestBed _;
+    RecipeBookController recipesController;
+
+    setUp(() {
+      var injector = new DynamicInjector(modules: [
+        new AngularModule()..type(RecipeBookController),
+        new AngularMockModule()
+      ]);
+      _ = injector.get(TestBed);
+      recipesController = _.injector.get(RecipeBookController);
+    });
+
+    test('should load recipes', () {
+      expect(recipesController.recipes, isNot(isEmpty));
+    });
+
+    test('should select recipe', () {
+      var recipe = recipesController.recipes[0];
+      recipesController.selectRecipe(recipe);
+      expect(recipesController.selectedRecipe, same(recipe));
+    });
+  });
+}

Chapter_02/pubspec.yaml

@@ -7,4 +7,6 @@ dependencies:
 
   browser: any
   js: any
+
+dev_dependencies:
   unittest: any