测试成功重定向的控制器方法 - moq

Question

让我们采取以下措施：

        mockSiteRepository.Setup(m => m.Sites).Returns(new Site[] {
            new Site {
                SiteID = 0,
                DateCreated = DateTime.Now,
                Name = "A",
                AddressID = 0
            }
        }.AsQueryable());

        mockAddressRepository.Setup(m => m.Addresses).Returns(new Address[] {
            new Address {
                AddressID = 0,
                Address1 = "A",
                Address2 = "B",
                CityID = 0,
                CountryID = 0,
                StateID = 0,
                ZIP = "D"
            }
        }.AsQueryable());

        SiteViewModel testForm = new SiteViewModel
        {
            SiteID = 0,
            DateCreated = DateTime.Now,
            Name = "A",
            AddressID = 0,
            Address1 = "E",
            Address2 = "F",
            CityID = 0,
            City = null,
            CountryID = 0,
            Country = null,
            StateID = 0,
            State = null,
            ZIP = "J"
        };


        SiteController controller = new SiteController(mockChemical.Object, mockSiteRepository.Object, mockChemicalRelationRepository.Object, mockAddressRepository.Object);

        ActionResult result = controller.Edit(testForm);

现在看看Edit方法（伪）：

    public ActionResult Edit(SiteViewModel siteViewModel)
    {
        if (ModelState.IsValid)
        {
            Address address = siteViewModel.Map();
            addressRepository.Edit(address);
            Site site = siteViewModel.Map(address.AddressID);
            siteRepository.Edit(site);

            TempData["success"] = string.Format("Site {0} was successfully edited", site.Name);
            return RedirectToAction("List");
        }
        else
        {
            // Something wrong with the values
        }
        return View(siteViewModel);
    }

您如何测试这种方法？

成功时，它会重定向到返回 ViewResult 的“List”控制器。我不想仅仅因为它已重定向就相信我的数据已成功编辑和保存...

那么我可以做些什么来检查，当我将 SiteViewModel 放入我的控制器方法时，它确实成功地编辑了现有网站。

Answer 1

在创建mockSiteRepository 和mockAddressRepository 时使用MockBehaviour.Strict。

当您运行测试时，您应该会看到一个显示您的invocation of IAddressRepository.Edit(Site) failed with MockBehaviour.Strict 的异常。现在您确切地知道在您的存储库上调用了哪些方法，因此您将知道它确实编辑了该站点。

然后你必须让测试通过。在您的测试中设置模拟存储库以期待编辑。您不确切知道 Site 或 Address 的哪个实例将被传递到您的模拟存储库，因此您必须使用 It.Is 方法来允许任何匹配的实例。类似的东西

mockSiteRepository.Setup(repo => repo.Save(It.Is<Site>(s => s.SiteID == testForm.SiteID)));

这样您就可以验证传递到存储库的内容是否至少具有正确的 ID。

---

解决这个问题的另一种方法是使用 It.IsAny 方法，将站点分配给测试方法中的局部变量，然后在之后断言它。我发现这会导致更多不言自明的错误消息和更容易调试。例如：

//arrange
var mockSiteRepository = new Mock<ISiteRepository>();
var testForm = new Site { SiteID = 0 };

Site savedSite = null;
mockSiteRepository
    .Setup(repo => repo.Save(It.IsAny<Site>()))
    .Callback<Site>(s => savedSite = s);

//act
var controller = new SiteController(mockChemical.Object, mockSiteRepository.Object, mockChemicalRelationRepository.Object, mockAddressRepository.Object);
var result = controller.Edit(testForm);

//assert
Assert.That(savedSite, Is.Not.Null); //this verifies that your setup was called
Assert.That(savedSite.SiteID, Is.EqualTo(testForm.SiteID));
Assert.That(savedSite.Name, Is.EqualTo(testForm.Name));

//do your other asserts

//always VerifyAll at the end so you know your setups were all called
mockSiteRepository.VerifyAll();