如何为控制器使用自动映射器编写单元测试？

Question

我正在尝试为控制器编写单元测试以测试 return 所有用户的方法。但是我很困惑如何使用automapper

编写单元测试

控制器：

private readonly IUserService _userService;

public UserController(IUserService userService)
{
  this._userService = userService;
}

public ActionResult List()
{
  var users = _userService.GetAllUsers().ToList();
  var viewModel = Mapper.Map<List<UserViewModel>>(users);
  return View(viewModel);
}

控制器测试：

    private Mock<IUserService> _userServiceMock;
    UserController objUserController;
    List<UserViewModel> listUser;

    [SetUp]
    public void Initialize()
    {
        _userServiceMock = new Mock<IUserService>();
        objUserController = new UserController(_userServiceMock.Object);
        listUser = new List<UserViewModel>()
        {
            new UserViewModel() {Id = 1, Active = true, Password = "123456", UserName = "hercules"},
            new UserViewModel() {Id = 2, Active = false, Password = "1234567", UserName = "alibaba"},
            new UserViewModel() {Id = 3, Active = true, Password = "12345678", UserName = "robinhood"},
        };
    }

    [Test]
    public void Index_Returns_AllUser()
    {
      // How do I here ???
    }

Answer 1

像在 MVC 项目上一样配置自动映射器：

[SetUp]
public void Initialize()
{
    ....
    AutoMapperConfiguration.Configure();
}

其中 AutoMapperConfiguration 是一个 public 静态 class 像：

public class AutoMapperConfiguration
{

    /// <summary>
    /// Maps between VIEWMODEL and MODEL
    /// </summary>
    public static void Configure()
    {
        //maps here
         Mapper.CreateMap..
    }
}

Answer 2

您可以为具有接口的自动映射器创建包装器 class。例如：

public interface IMapperWrapper
{
     object Map(object source, Type sourceType, Type destinationType);
}

然后您在测试中需要做的就是模拟您的地图。

automapperWrapperMock.Setup(x => x.Map, type, type);

Answer 3

您正试图编写一个几乎没有价值的测试。不要写这个测试。使用真实的 IUserService 并使用真实的 AutoMapper 并对 ViewResult 进行断言。

我永远不会对这段代码进行单元测试。

但是，如果您一心想编写此单元测试，请不要嘲笑 AutoMapper。模拟 IUserService。

UserController objUserController;
List<User> listUser;

[SetUp]
public void Initialize()
{
    var userServiceMock = new Mock<IUserService>();
    listUser = new List<User>()
    {
        new User() {Id = 1, Active = true, Password = "123456", UserName = "hercules"},
        new User() {Id = 2, Active = false, Password = "1234567", UserName = "alibaba"},
        new User() {Id = 3, Active = true, Password = "12345678", UserName = "robinhood"},
    };
    userServiceMock.Setup(framework => framework.GetAllUsers())
  .Returns(listUser);

    objUserController = new UserController(_userServiceMock.Object);
}

[Test]
public void Index_Returns_AllUser()
{
    var result = objUserController.List();

    var viewResult = result as ViewResult;

    viewResult.ShouldNotBe(null);
    var model = viewResult.Model as List<UserListModel>;
    model.ShouldNotBe(null);

    model.Count.ShouldBe(3); // Don't do more than this
}

Answer 4

只需设置您的控制器并调用您的 Automapper 配置，您对该控制器的所有测试都会正常工作。

[TestInitialize]
public void Setup()
{
    controller = new yourController(_unitOfWork.Object, _someRepository.Object)
    {

    };

    AutoMapperConfig.RegisterMappings();
}

如何为控制器使用自动映射器编写单元测试？

How do I write a unit test for controller use automapper?

asp.net-mvc

nunit

unit-testing

automapper