单元测试 MVC 5 控制器使用工作单元和存储库创建操作

Question

我正在尝试测试接受视图模型并创建新条目的控制器操作。这是控制器操作：

[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create(ContactViewModel viewModel)
{
    if (!ModelState.IsValid)
        return View("Create", viewModel);

    _unitOfWork.Contacts.Add(Mapper.Map(viewModel, new Contact()));  

    _unitOfWork.Complete();

    return RedirectToAction("Index");
}

单元测试：

[TestClass]
public class ContactControllerTests
{
    private ContactsController _controller;
    private Mock<IContactRepository> _mockRepository;
    private string _userId;
    private Mock<IUnitOfWork> _mockUoW;

    [ClassInitialize]
    public static void Init(TestContext context)
    {
        Mapper.Initialize(c => c.AddProfile<MappingProfile>());
    }

    [TestInitialize]
    public void TestInitialize()
    {
        _userId = "1";
        _mockRepository = new Mock<IContactRepository>();
        _mockUoW = new Mock<IUnitOfWork>();

        _mockUoW.SetupGet(u => u.Contacts).Returns(_mockRepository.Object);

        _controller = new ContactsController(_mockUoW.Object);

        _controller.MockCurrentUser(_userId, "user@domain.com");
    }

    [TestMethod]
    public void CreatePost_ValidValuesSubmitted_ShouldCallComplete()
    {
        var viewModel = new ContactViewModel()
        {
            FirstName = "a",
            LastName = "b"
        };

        _controller.Create(viewModel);

        _mockRepository.Object.GetContacts(_userId).Should().HaveCount(1);
    }
}

单元测试总是 returns 计数 0，而我希望它是 1。我是 TDD 的新手，我实现了工作单元和存储库模式，如 Mosh Hamedani 的课程所示： https://app.pluralsight.com/library/courses/full-stack-dot-net-developer-architecture-testing/table-of-contents

Answer 1

在上面的示例中，您没有模拟存储库的任何行为。

根据提供的示例，我们假设一个像这样的简单界面。

public interface IContactRepository {
    void Add(Contact contact);
    IEnumerable<Contact> GetContacts(string _userId);
}

您需要以某种形式存储您的数据。

[TestInitialize]
public void TestInitialize() {
    _userId = "1";
    var data = new List<Contact>();//To store test data.
    //Configure repository
    _mockRepository = new Mock<IContactRepository>();
    _mockRepository.Setup(m => m.Add(It.IsAny<Contact>())).Callback<Contact>(data.Add);
    _mockRepository.Setup(m => m.GetContacts(_userId)).Returns(data);
    //Configure UoW
    _mockUoW = new Mock<IUnitOfWork>();
    _mockUoW.SetupGet(u => u.Contacts).Returns(_mockRepository.Object);

    _controller = new ContactsController(_mockUoW.Object);

    _controller.MockCurrentUser(_userId, "user@domain.com");
}

或者放弃模拟并创建一个假的。

public class FakeContactRepository : IContactRepository {
    private ICollection<Contact> data;

    public FakeContactRepository(ICollection<Contact> data) {                
        this.data = data;
    }

    public void Add(Contact contact) {
        data.Add(contact);
    }

    public IEnumerable<Contact> GetContacts(string _userId) {
        return data;
    }
}

并为测试进行设置。

[TestInitialize]
public void TestInitialize() {
    _userId = "1";
    var data = new List<Contact>();//To store test data.
    //Configure repository
    var fakeRepository = new FakeContactRepository(data);
    //Configure UoW
    _mockUoW = new Mock<IUnitOfWork>();
    _mockUoW.SetupGet(u => u.Contacts).Returns(fakeRepository );

    _controller = new ContactsController(_mockUoW.Object);

    _controller.MockCurrentUser(_userId, "user@domain.com");
}

单元测试 MVC 5 控制器使用工作单元和存储库创建操作

Unit Test MVC 5 Controller Create Action with Unit of Work and Repository

c#

asp.net-mvc

unit-testing

moq