Primeng确认服务的角度单位测试

Question

我无法弄清楚如何在此功能中测试接受和拒绝功能：

confirmReplan(event: any) {
    this.confirmationService.confirm({
      target: event.target,
      key: 'replan',
      message: 'lorem',
      icon: 'pi pi-exclamation-triangle',
      accept: () => {
        this.messageService.add(/** **/);
        this.replanRequest();
        this.displayReplan = false;
      },
      reject: (type: any) => {
        this.rejectMessage(type);
      }
    });
  }

查看类似的问题，我尝试了许多解决方案。似乎对他人有用的是这种风格：

let component: RequestsTableComponent;
let fixture: ComponentFixture<RequestsTableComponent>;
let confirmationServiceSpy: ConfirmationService;
let requestServiceSpy: RequestApiService;
let messageServiceSpy: MessageService;

  beforeEach(async () => {
    await TestBed.configureTestingModule({
      declarations: [RequestsTableComponent],
      imports: [HttpClientTestingModule],
      providers: [MessageService, RequestApiService, ConfirmationService]
    }).compileComponents();
  });

  beforeEach(() => {
    fixture = TestBed.createComponent(RequestsTableComponent);
    component = fixture.componentInstance;
    fixture.detectChanges();
    messageServiceSpy = TestBed.inject(MessageService);
    requestServiceSpy = TestBed.inject(RequestApiService);
    confirmationServiceSpy = TestBed.inject(ConfirmationService);
  });

  it('/**/', async() => {
    spyOn(confirmationServiceSpy, 'confirm').and.callFake((confirmation: any) => {return confirmation.accept()});

    component.confirmReplan({ target: undefined });
    expect(confirmationServiceSpy.confirm).toHaveBeenCalled();
  });

但是间谍从未被召唤。

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Answer 1

一种方法是对参数进行处理，并将conve> Accept和手动拒绝。

it('/**/', async() => {
    // associate this spy to a variable so we have a handle on it later
    const confirmSpy = spyOn(confirmationServiceSpy, 'confirm');

    component.confirmReplan({ target: undefined });
    // get a handle on the most recent argument to this spy
    const arg = confirmSpy.calls.mostRecent().args[0];
    // call accept
    arg.accept();
    // call reject if you like
    arg.reject();
    expect(component.displayReplan).toBeFalse();
    // now they should be covered
  });