我正在尝试测试使用其他服务的组件.我想通过为服务提供模拟来隔离组件.在RC5之前,我可以简单地使用现在已弃用的addproviders,并将被下一个RC删除.相反,我必须使用TestBed.当我因某种原因提供模拟角度时,请继续寻找模拟所依赖的服务.并抛出DI异常.当我提供所有依赖项时,测试工作但我不想为每个测试套件重复自己.这打破了基本的OO原则.
我的测试套件：
我的测试套件：
describe('Component: DummyRestApi',() => {
class DummyRestApiTestService {
GetAll() {
return Rx.Observable.create(observer => {
let data:Data[] = [];
data.push({
id: 0,data: 'data'
});
observer.next(data);
observer.complete();
});
}
Add(data) {
}
}
let fixture;
let myMockWindow:Window;
// ToDo use the mocks
beforeEach(() => {
myMockWindow = <any> {location: <any> {hostname: '127.0.0.1'}};
TestBed.configureTestingModule({
declarations: [DummyRestApiComponent],providers: [
// ServerAddressResolverService,DummyRestApiComponent,// ConfigurationService,{provide: DummyRestApiService,useClass: DummyRestApiTestService},// {provide: Window,useValue: myMockWindow}
],imports: [FormsModule,HttpModule]
});
TestBed.compileComponents().catch(error => console.error(error));
// addProviders([
// DummyRestApiComponent,// {provide: DummyRestApiService,// ]);
});
describe('Initializing',() => {
beforeEach(async(() => {
console.log('Compiling');
TestBed.compileComponents().catch(error => console.error(error));
console.log('Compiling again');
}));
it('should create an instance',async(() => {
var fixture = TestBed.createComponent(DummyRestApiComponent);
fixture.detectChanges();
expect(fixture.debugElement.componentInstance).toBeTruthy();
}
));
});
Angular 2.0.0-RC5
请注意,Patrick Ineichens回答使用了提议,已弃用.
providers: [provide(TodoService,{ useValue: this.service })]
应改为：
providers: [{provide:TodoService,useValue: this.service }]
