Question

我试图模拟身份验证服务。我发布我的登录凭据并获得一个令牌，然后保存令牌。

如果我评论该行，基本上测试运行：

this.authenticationService.saveToken(res.json().token);

我在测试中注入了服务，这行不会影响输出。

我的错误是＆＃34;无法读取属性＆＃39; saveToken＆＃39;未定义的抛出＆＃34;

这是我的服务：

private authSuccess(res: Response){
    this.isAuthenticated = true;
    this.authenticationService.saveToken(res.json().token);
    return res.json();
}

public postLogin(loginData: LoginModel): Observable<any>{
    let body = JSON.stringify(loginData);
    var headers = new Headers();        
    headers.append('Content-Type', 'application/json');
    let options = new RequestOptions({ headers: headers });

    return this.http.post(this.loginUrl, body, options)
    //success
    .map(this.authSuccess)
    //error          
    .catch(this.handleError);        
}

这是我的测试：

describe('login service tests', () => {    
    let loginService: LoginService;
    let backend: MockBackend;
    let injector: Injector;
    let authenticationService: AuthenticationService;

  beforeEach(() => {
    injector = ReflectiveInjector.resolveAndCreate(<any> [
        LoginService,
        AuthenticationService,
        BaseRequestOptions,
        MockBackend,
        provide(Http, {
            useFactory: (mockBackend, defaultOptions) => new Http(mockBackend, defaultOptions),
            deps: [MockBackend, BaseRequestOptions]
        })
    ]);

    loginService = <LoginService> injector.get(LoginService);
    backend = <MockBackend> injector.get(MockBackend);
    authenticationService = <AuthenticationService> injector.get(AuthenticationService)
  });

  afterEach(() => backend.verifyNoPendingRequests());

  it('should authenticate with the web api', () => {
      let loginUrl = Constants.loginUrl;
      let loginData:LoginModel = new LoginModel('username', 'password');

      backend.connections.subscribe((c: MockConnection) => {
        expect(c.request.url).toEqual(loginUrl);
        c.mockRespond(new Response(new ResponseOptions({ body: '{"token": "mockAuth"}' })));
      });

    //Correct login data
    loginService.postLogin(loginData).subscribe((data) => {        
        expect(data.token).toBe('mockAuth');
    });

  });

另外，你们在运行测试时如何调试？ console.log似乎不起作用，也没有调试器;

Answer 1

好吧，所以似乎问题是调用.map部分中的方法而不是直接在那里执行所有操作。

解决方案：

删除authsuccess

.map((response) => {
        this.isAuthenticated = true;
        this.authenticationService.saveToken(response.json().token);
        return response.json();
})

缺少依赖性：无法读取属性＆＃39; saveToken＆＃39;未定义的抛出

1 个答案: