TypeError：无法读取新的RouterLinkWithHref中未定义的属性“subscribe”

Question

我正在尝试创建单元测试并测试组件的路由器。我想我差不多了，但我遇到了错误

  

'TypeError：无法读取未定义的属性'subscribe'   RouterLinkWithHref'

我在网上找不到解决方案......

我的spec文件中有以下设置：

describe('TestOverviewComponent', () => {
  let comp:    TestOverviewComponent;
  let fixture: ComponentFixture<TestOverviewComponent>;
  let createEl:      DebugElement;
  let routerStub;

  beforeEach(async(() => {
    routerStub = {
      navigate: jasmine.createSpy('navigate'),
      routerState: {}
    };

    TestBed.configureTestingModule({
      declarations: [], // declare the test component
      imports: [
        NgReduxTestingModule,
        HttpClientTestingModule,
        TranslateModule.forRoot(),
        NgbModule.forRoot(),
        DialogSharedModule,
        RouterTestingModule,
        TestModule
      ],
      providers: [
        { provide: Router, useValue: routerStub },
        SessionService,
        Logger,
        StorageService,
      ]
    })
      .compileComponents();
  }));

  beforeEach(() => {
    fixture = TestBed.createComponent(TestOverviewComponent);
    comp = fixture.componentInstance;
    createEl = fixture.debugElement.query(By.css('.btn-primary'));

    comp.paginationFilter.page = 1;
    comp.paginationFilter.pageSize = 10;

    fixture.detectChanges();
  });

  it('should be created', () => {
    expect(comp).toBeTruthy();
  })