describe('SecondService', () => {let firstServiceSpy: jasmine.SpyObj<FirstService>; // 定义依赖的服务beforeEach(() => {firstServiceSpy = jasmine.createSpyObj('firstService', ['getValue']); //创建假的服务firstServiceSpy.getValue.and.returnValue('firstValue'); // 直接设定返回的结果 (这样不管这个服务的具体实现正不正确, 我们都不会被影响到)TestBed.configureTestingModule({providers: [SecondService,{ provide: FirstService, useValue: firstServiceSpy } // 替换掉 provide 就可以了]});});it(`getValue should return 'firstValueSecondValue'`, inject([SecondService], (secondService : SecondService) => {    expect(secondService.getValue()).toBe('firstValuesecondValue'); }));});

beforeEach(() => {TestBed.configureTestingModule({imports: [StoogesModule],declarations: [SimpleComponent],providers: [MockBackend,BaseRequestOptions]});TestBed.overrideComponent(SimpleComponent, {set: {providers: [{provide: Http,deps: [MockBackend,BaseRequestOptions],useFactory: (backend: XHRBackend, defaultOptions: BaseRequestOptions) => {return new Http(backend, defaultOptions);}}]}});TestBed.compileComponents();this.fixture = TestBed.createComponent(SimpleComponent);this.com = this.fixture.debugElement.componentInstance;
});

it("test", async(inject([MockBackend], (backend: MockBackend) => {const mockResponse = {data: [{ id: 0, name: 'Video 0' },{ id: 1, name: 'Video 1' },{ id: 2, name: 'Video 2' },{ id: 3, name: 'Video 3' },]};backend.connections.subscribe((connection) => {console.log("test");connection.mockRespond(new Response(new ResponseOptions({body: JSON.stringify(mockResponse)})));});let com = this.com as SimpleComponent;com.dada().subscribe(v => {expect("haha").toBe("haha");});
})));

describe("test", () => {beforeEach(() => {TestBed.configureTestingModule({providers: [SimpleService]});});it("test1", async(inject([SimpleService], async (simple: SimpleService) => {let data = await simple.getData();console.log("a");expect(data).toBe("a");})));
});