fix(build): test example directories with unit and e2e tests (#11296)

modules/@angular/examples/core/animation/ts/dsl/animation_example.ts

@@ -7,10 +7,11 @@
  */
 
 // #docregion Component
-import {Component, animate, state, style, transition, trigger} from '@angular/core';
+import {Component, NgModule, animate, state, style, transition, trigger} from '@angular/core';
+import {BrowserModule} from '@angular/platform-browser';
 
 @Component({
-  selector: 'my-expando',
+  selector: 'example-app',
   styles: [`
     .toggle-container {
       background-color:white;
@@ -46,4 +47,9 @@ export class MyExpandoCmp {
   expand() { this.stateExpression = 'expanded'; }
   collapse() { this.stateExpression = 'collapsed'; }
 }
+
+@NgModule({imports: [BrowserModule], declarations: [MyExpandoCmp], bootstrap: [MyExpandoCmp]})
+export class AppModule {
+}
+
 // #enddocregion

modules/@angular/examples/core/animation/ts/dsl/e2e_test/animation_example_spec.ts

@@ -0,0 +1,29 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+import {verifyNoBrowserErrors} from '../../../../../_common/e2e_util';
+
+function waitForElement(selector: string) {
+  var EC = (<any>protractor).ExpectedConditions;
+  // Waits for the element with id 'abc' to be present on the dom.
+  browser.wait(EC.presenceOf($(selector)), 20000);
+}
+
+describe('animation example', () => {
+  afterEach(verifyNoBrowserErrors);
+
+  describe('index view', () => {
+    var URL = '/core/animation/ts/dsl/index.html';
+
+    it('should list out the current collection of items', () => {
+      browser.get(URL);
+      waitForElement('.toggle-container');
+      expect(element.all(by.css('.toggle-container')).get(0).getText()).toEqual('Look at this box');
+    });
+  });
+});

modules/@angular/examples/core/animation/ts/dsl/module.ts

@@ -0,0 +1,8 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+export {AppModule} from './animation_example';