Question

只是想要一些指导如何进行单元测试以下操作：

public ActionResult Index()
{
    var model = _resolver.GetService<ISignUpViewModel>();
    model.Location =  _resolver.GetService<ILocations>().getLocations(string area);
    return PartialView("Login", model);
}


private IDependencyResolver _resolverMock;

[TestMethod]
public void SignUpTest()
{
    var _resolverMock = new Mock<IDependencyResolver>();
    var ctrl = new HomeController(_resolverMock.Object);
    var signUpMock = new Mock<ISignUpViewModel>();
    var LocationsMock = new Mock<ILocations>();

    _resolverMock.Setup(m => m.GetService(It.IsAny<Type>())).Returns(
             signUpMock.Object);

   _resolverMock.Setup(m => m.GetService(It.IsAny<Type>())).Returns(
             LocationsMock.Object);


    DependencyResolver.SetResolver(resolverMock.Object);

    ctrl.Index();
    ctrl.ViewData.Model = signUpMock;
}

如何在单元测试中建立模型？

另外如何从解析器中调用getLocations方法？

不确定如何做到这一点？

Answer 1

根据您的代码，您的家庭控制器不依赖于IDependencyResolver。它实际上取决于ISignUpViewModel。因此，您可以将其中一个传递给构造函数或ISignUpViewModelFactory。所以我会将模型分辨率重构为工厂类：

public class HomeController {

    private readonly ISignUpViewModelFactory _modelFactory;

    public HomeController(ISignUpViewModelFactory modelFactory){
          _modelFactory = modelFactory;
    }

    public ActionResult Index()
    {
        return PartialView("Login", _modelFactory.Create(area));
    }
}


public interface ISignUpViewModelFactory {
  ISignUpViewModel Create(string area);
}

public class ProductionSignUpViewModelFactory : ISignUpViewModelFactory
{
    public ISignUpViewModel Create(string area){
       // create and return your models here
       // if you still have to use a service locator in this factory then
       // refactor some more until you get these dependencies out in the open.
    }
}

public class MockSignUpViewModelFactory : ISignUpViewModelFactory
{
    public ISignUpViewModel Create(string area){
       return new SignUpViewModel();
    }
}

在制作中，您IOC会注入ProductionSignUpViewModelFactory的实例。在测试中，您传入MockSignUpViewModelFactory。

不同之处在于使用此方法只测试操作（即单元），而使用当前方法测试操作和服务器_resolver加上你已经模糊了实际的依赖关系ISignUpViewModel 1}}不是IDependencyResolver。

根据ProductionSignUpViewModelFactory中的评论，如果您必须向该工厂注入IDependencyResolver以使其正常工作，那么您可能仍然做错了。然后，您需要查看ProductionSignUpViewModelFactory创建ISignUpViewModel实例所需的内容，并注入IDependencyResolver。

最终，您将进入依赖关系链的顶端，您会发现单元测试变得非常非常简单。如果你首先构建测试，即TDD，则更容易。：）

在单元测试中构建模型

1 个答案: