Angular 2單元測試：如何覆蓋@Inject（'Window'）private _window：窗口構造函數的依賴關係？

Question

我嘗試以下，例如：

beforeEach(async(() => { 

    TestBed.configureTestingModule({ 
     declarations: [CmpBeingTested], 
     providers: [ 
      {provide: window, useValue: window} 

     ] 
    }); 
})); 

我不能夠覆蓋CmpBeingTested構造：

constructor(@Inject('Window') private _window: Window) { } 

而且我不斷收到錯誤

無提供窗口！

Answer 1

beforeEach(async(() => { 

     let windowMock: Window = { } as any; 

     TestBed.configureTestingModule({ 
      declarations: [CmpBeingTested], 
      providers: [ 
       { provide: 'Window', useFactory: (() => { return windowMock; }) } 

      ] 
     }); 
    }));