问带另一个参数的Angular SpyOn服务

EN

export class AuthService{
    constructor(public serviceAbcd: ServiceAbcd) {}

describe('Component: Login', () => {

  let component: LoginComponent;
  let service: AuthService;
  let spy: any;

  beforeEach(() => {
    service = new AuthService();
    component = new LoginComponent(service);
  });
    
  it('needsLogin returns true when the user has not been authenticated', () => {
    spy = spyOn(service, 'isAuthenticated').and.returnValue(false);
    expect(component.needsLogin()).toBeTruthy();
    expect(service.isAuthenticated).toHaveBeenCalled(); 
  });

  afterEach(() => { 
    service = null;
    component = null;
  });

});