在ASP.Net RC1中模拟TryUpdateModel的要求

时间:2009-02-09 21:43:13

标签: asp.net-mvc unit-testing mocking updatemodel

我正在为RC1中的控制器编写一些单元测试。这里是 控制器的公共签名我正在测试:

        [AcceptVerbs(HttpVerbs.Post)]
    public ActionResult AcceptColleague()
    {

AcceptColleague中的实现使用从表单字段填充Colleague对象的TryUpdateModel(同事)方法。但是,在尝试对方法进行单元测试时,我在TryUpdateModel行上遇到“未设置为对象实例的对象引用”错误。

这是我的单元测试代码:

            // definition
        HomeController controller = new HomeController();
        IColleagueRepository fakeColleagueRepo = MockRepository.GenerateMock<IColleagueRepository>();
        Colleague requestedColleauge = new Colleague();
        EmployeeInfo currentUser = new EmployeeInfo();            
        HttpContextBase fakeHttpContext = MockRepository.GenerateMock<HttpContextBase>();
        HttpRequestBase fakeHttpRequest = MockRepository.GenerateMock<HttpRequestBase>();
        ControllerContext fakeContext = MockRepository.GenerateMock<ControllerContext>(fakeHttpContext, new RouteData(), controller);
        NameValueCollection fakeForm = new NameValueCollection();

        // expectations
        fakeColleagueRepo.Expect(c => c.Read(1234)).Return(requestedColleauge);
        fakeColleagueRepo.Expect(c => c.Update(requestedColleauge));
        fakeColleagueRepo.Expect(c => c.Add(new Colleague())).IgnoreArguments().Constraints(Is.NotNull());
        fakeContext.Expect(cx => cx.HttpContext).Return(fakeHttpContext);
        fakeHttpContext.Expect(hcx => hcx.Request).Return(fakeHttpRequest);
        fakeHttpRequest.Expect(hr => hr.Form).Return(fakeForm);

        // setup
        controller.ColleagueRepository = fakeColleagueRepo;
        controller.ControllerContext = fakeContext;
        requestedColleauge.TargetEmployeeInfoId = 123456;
        requestedColleauge.GeneratedEmployeeInfoId = 654321;
        currentUser.EmployeeInfoId = 123456;
        fakeForm.Add("ColleagueId", "22222");

        // action
        RedirectToRouteResult result = controller.AcceptColleague() as RedirectToRouteResult;

        // validation
        Assert.IsNotNull(result, "AcceptColleague() did not return RedirectToRouteResult");

我是否在模拟上遗漏了某些内容,或者我应该使用像AcceptColleague(同事同事)这样的不同公共签名,然后测试ModelState.IsValid属性?

如果是这样,怎么看不到我可以从控制器模拟只读ModelState属性的方法呢?

1 个答案:

答案 0 :(得分:13)

TryUpdateModel和ModelState都需要RC 1中的模拟。您唯一需要提供的是ValueProvider。为此,您可以使用FormCollection.ToValueProvider()。

您仍然需要模拟您的存储库,但是您无需在框架中模拟此功能。试试这个:

    FormCollection fakeForm = new FormCollection();
    fakeForm.Add("ColleagueId", "22222");
    controller.ValueProvider = fakeForm.ToValueProvider();

    // action

注意:除非你的代码需要,否则不需要模拟的HttpContext。