3

我正在尝试在 ASP.NET MVC 3 中对我的控制器上的编辑操作进行单元测试。

我已经通过 nuget 安装了 Mvcontrib.MVC3.TestHelper 来模拟我的控制器上下文，但我仍然收到 NullReferenceException

我的代码如下所示：

 [TestMethod]
    public void it_should_redirect_to_index_after_editing_a_something_successfully()
    {
        var something= new SomeThing
        {
            ID = Guid.NewGuid(),
            CreatedAt = DateTime.Now,
            LastModified = DateTime.Now,
            Owner = "Me",
            Status = "new",
            Title = "my Title",
            Attachments = new List<Attachment>()
        };

        var repo = new FakeRepository();
        var controller = new SomethingsController(repo);
        new TestControllerBuilder().InitializeController(controller);

        var result = controller.Edit(something) as RedirectToRouteResult;
        result.AssertActionRedirect().ToAction<SomethingsController>(x => x.Index());
    }

生产代码看起来像这样......

 [HttpPost]
    public ActionResult Edit(SomeThing something)
    {
        if (ModelState.IsValid)
        {
            var _something = _repository.GetDocumentByID(something.ID);
            TryUpdateModel(_something);
            _something.LastModified = DateTime.Now;
            _repository.SaveChanges();
            return RedirectToAction("Index","Somethings");
        }
        return View(something);
    }

即使我使用 UpdateModel 或 TryUpdateModel 它总是会因 NullReferenceException 而崩溃......

任何帮助，指针都会很棒......

4

1 回答 1

5

以下是您可以进行的操作：

public class Something
{
    public Guid ID { get; set; }
    public DateTime LastModified { get; set; }
    public DateTime CreatedAt { get; set; }
    public string Owner { get; set; }
    public string Status { get; set; }
    public string Title { get; set; }
}

public interface ISomeRepository
{
    Something GetDocumentByID(Guid id);
    void SaveChanges();
}

public class HomeController : Controller
{
    private readonly ISomeRepository _repository;
    public HomeController(ISomeRepository repository)
    {
        _repository = repository;
    }

    public ActionResult Index()
    {
        return View();
    }

    [HttpPost]
    public ActionResult Edit(Something something)
    {
        if (ModelState.IsValid)
        {
            var _something = _repository.GetDocumentByID(something.ID);
            TryUpdateModel(_something);
            _something.LastModified = DateTime.Now;
            _repository.SaveChanges();
            return RedirectToAction("Index", "Home");
        }
        return View(something);
    }
}

和测试：

// arrange
var something = new Something
{
    ID = Guid.NewGuid(),
    CreatedAt = DateTime.Now,
    LastModified = DateTime.Now,
    Owner = "Me",
    Status = "new",
    Title = "my Title",
};
var somethingElse = new Something();
var repo = MockRepository.GenerateStub<ISomeRepository>();
var controller = new HomeController(repo);
new TestControllerBuilder().InitializeController(controller);
repo.Stub(x => x.GetDocumentByID(something.ID)).Return(somethingElse);

var formValues = new FormCollection() 
{
    { "Owner", "some owner" },
};
controller.ValueProvider = formValues.ToValueProvider();

// act
var actual = controller.Edit(something);

// assert
repo.AssertWasCalled(x => x.SaveChanges());
actual
    .AssertActionRedirect()
    .ToAction<HomeController>(x => x.Index());
于 2011-02-04T10:13:01.970 回答