Question

我不确定在以下测试中热/冷响应如何工作。我已将测试配置为期望比萨服务提供响应，并使用下面的可观察的大理石测试来测试该响应。但是看起来在实际响应中我会遇到额外的事件吗？我不知道如何-额外的事件正在破坏测试！

这是我要测试的效果。它调用披萨服务，并成功返回所有披萨。目的是编写一个可观察的测试，以检查从Pizza Pizza服务返回的最终可观察结果是否与测试中的期望相符

getPizzas$ = this.actions$.pipe(
  ofType<GetAllPizzas>(PizzaTypes.GetPizzas,
  withLatestFrom(
    this.store$.pipe(select(fromRootStore.getPizzaId))
  ),
  take(1),
  exhaustMap(([customAction, pizzaId]): any => {  
    if (!pizzaId) {                       
      map(() => new BigProductError({ .   
           appmessage : "Boom"
      }));
    } .      
    return this.pizzaService.getPizzas(customAction.orderDetails, pizzaId)
      .pipe(
        map((pizzas) => new LoadPizzasSuccess(pizzas)),
        catchError(error => of(new LoadPizzasFailure(error)))
      );
  })
);

我写的测试是：

describe('GetPizzas', () => {
    test(`
      Get Pizzas successfully
    `, () => {
      const action = new GetAllPizzas();
      const success = new GetAllPizzasSuccess({'NumberOfPizzas': 2});

      actions$ = hot('-a', { a: action });
      const resp = cold('-a|', { a: { NumberOfPizzas: 2 } });
      const exp = cold('--a', { a: success });
      pizzaService.getPizzas = jest.fn(() => resp);

      expect(effects.pizzaService$).toBeObservable(exp);
    });

感觉我在响应中遇到了一个额外的可观察事件（下面的响应末尾有额外的IFRAME 30）。但我无法将其纳入测试。

  Expected value to equal:
      [{"frame": 20, "notification": {"error": undefined, "hasValue": true, "kind": "N", 
"value": {"payload": {"NumberOfPizzas": 2}, "type": "[Pizzas API] Get All Pizzas Success"}}}]
  Received:
      [{"frame": 20, "notification": {"error": undefined, "hasValue": true, "kind": "N", 
"value": {"payload": {"NumberOfPizzas": 2}, "type": "[[Pizzas API] Get All Pizzas Success"}}}, 
{"frame": 30, "notification": {"error": undefined, "hasValue": false, "kind": "C", "value": undefined}}]

如何修复此破碎的Marble RXJS可观察测试？

0 个答案: