ngrx路由器-存储测试路由器导航效果

Question

我有以下的效果和测试：

LoginRedirect效应

  @Effect()
  public loginSuccess$: Observable<Action> = this.actions$.pipe(
    ofType<LoginSuccess>(AuthActionTypes.LoginSuccess),
    map( action => action.payload ),
    concatMap( (payload: Client) => [
      new SecondAction(payload),
    ]),
    tap(() => this.router.navigate(['/somepage']))
  );

LoginRedirect效应试验

  describe('#loginSuccess$', () => {
    it('should trigger SecondAction action and redirect to somepage', () => {
      spyOn(effects['router'], 'navigate');

      actions = hot('-a-', { a: new LoginSuccess({} as any)});
      expected = cold('-b', { b: new SecondAction({} as any)});

      expect(effects.loginSuccess$).toBeObservable(expected);
      expect(effects['router'].navigate).toHaveBeenCalled();
    });
  });

测试正在如预期的那样通过。我试图为在ngrx路由器存储上发生的一个可以观察到的操作编写相同的测试。举个例子，这是我的效果。

clearError效应

  @Effect()
  public clearError$: Observable<Action> = this.actions$.pipe(
    ofType(ROUTER_NAVIGATION), // <-- not using the conventional 
    mapTo(new ClearErrorMessage())
  );

clearError EffectTest

  describe('#clearError$', () => {
    it('should trigger ClearErrorMessage action', () => {
      spyOn(effects['actions$'], 'pipe').and.returnValue(hot('-a', { a: ROUTER_NAVIGATION }));

      expected = cold('-b', { b: new ClearErrorMessage() });

      expect(effects.clearError$).toBeObservable(expected);
    });
  });

但是，在这里我得到了一个错误：

Expected $.length = 0 to equal 1.
Expected $[0] = undefined to equal Object({ frame: 10, notification: Notification({ kind: 'N', value: ClearErrorMessage({ type: '[Auth] ClearErrorMessage' }), error: undefined, hasValue: true }) }).

任何指点都将不胜感激。

Answer 1

您还应该像在第一个示例中那样使用actions，而不是使用spyOn(...)

另外，ROUTER_NAVIGATION只是一个字符串，您必须创建一个操作。

describe('#clearError$', () => {
   actions$ = hot('-a---', { a: {type: ROUTER_NAVIGATION} });   
   expected = cold('-b', { b: new ClearErrorMessage() });
   expect(effects.clearError$).toBeObservable(expected);
});