茉莉花-间谍returnValue失败后期望

Question

我更改了模拟服务方法的返回值后，第二个expect语句出现问题。我已经尝试过fakeAsync和Jasmine的done，但仍然失败，它仅适用于我显然想摆脱的setTimeout。

不起作用：

    const authServiceMock = {
      getSessionEvents: jasmine.createSpy('getSessionEventsSpy').and.returnValue(of()),
      getAvailableCalculators: jasmine.createSpy('getAvailableCalculators')
    };

    beforeEach(async(() => {
      TestBed.configureTestingModule({
        imports: [],
        providers: [{provide: AppAuthService, useValue: authServiceMock}],
        declarations: [AppComponent]
      }).compileComponents();
    }));

    it('should check for available calculators after login', fakeAsync(() => {
      component.ngOnInit();

      expect(authServiceMock.getAvailableCalculators).not.toHaveBeenCalled();

      authServiceMock.getSessionEvents.and.returnValue(of(SESSION_EVENTS.login));
      tick(1000);

      expect(authServiceMock.getAvailableCalculators).toHaveBeenCalled(); // <=== FAILS
    }));

工作：

    it('should check for available calculators after login', () => {
      component.ngOnInit();

      expect(authServiceMock.getAvailableCalculators).not.toHaveBeenCalled();

      authServiceMock.getSessionEvents.and.returnValue(of(SESSION_EVENTS.login));

      setTimeout(() => expect(authServiceMock.getAvailableCalculators).toHaveBeenCalled(), 1000); // <=== PASSES
    });

Answer 1

我看不到您的组件代码，但是在黑暗中拍照，请尝试以下方法：

[fixture.whenStable()等到诺言完成。

it('should check for available calculators after login', async(done) => {
      component.ngOnInit();

      expect(authServiceMock.getAvailableCalculators).not.toHaveBeenCalled();

      authServiceMock.getSessionEvents.and.returnValue(of(SESSION_EVENTS.login));
      await fixture.whenStable();
      expect(authServiceMock.getAvailableCalculators).toHaveBeenCalled(); 
      done();
    });