Add Karma/Jasmine/Chai test starting point to Angular2Spa

templates/Angular2Spa/ClientApp/app/components/counter/counter.component.spec.ts

@@ -0,0 +1,29 @@
+/// <reference path="../../../../node_modules/@types/jasmine/index.d.ts" />
+import { assert } from 'chai';
+import { CounterComponent } from './counter.component';
+import { TestBed, async, ComponentFixture } from '@angular/core/testing';
+
+let fixture: ComponentFixture<CounterComponent>;
+
+describe('Counter component', () => {
+    beforeEach(() => {
+        TestBed.configureTestingModule({ declarations: [CounterComponent] });
+        fixture = TestBed.createComponent(CounterComponent);
+        fixture.detectChanges();
+    });
+
+    it('should display a title', async(() => {
+        const titleText = fixture.nativeElement.querySelector('h2').textContent;
+        expect(titleText).toEqual('Counter');
+    }));
+
+    it('should start with count 0, then increments by 1 when clicked', async(() => {
+        const countElement = fixture.nativeElement.querySelector('strong');
+        expect(countElement.textContent).toEqual('0');
+
+        const incrementButton = fixture.nativeElement.querySelector('button');
+        incrementButton.click();
+        fixture.detectChanges();
+        expect(countElement.textContent).toEqual('1');
+    }));
+});