Question

所以控制器上下文依赖于一些asp.net内部。有什么方法可以干净地模拟这些单元测试？似乎很容易堵塞大量的设置，当我只需要，例如，Request.HttpMethod返回“GET”。

我在网上看过一些例子/助手，但有些已经过时了。认为这将是保持最新和最伟大的好地方。

我正在使用最新版本的犀牛嘲笑

Answer 1

使用MoQ看起来像这样：

var request = new Mock<HttpRequestBase>();
request.Expect(r => r.HttpMethod).Returns("GET");
var mockHttpContext = new Mock<HttpContextBase>();
mockHttpContext.Expect(c => c.Request).Returns(request.Object);
var controllerContext = new ControllerContext(mockHttpContext.Object
, new RouteData(), new Mock<ControllerBase>().Object);

我认为Rhino Mocks语法类似。

Answer 2

这是一个使用MsTest和Moq的示例单元测试类，它可以模拟HttpRequest和HttpResponse对象。（.NET 4.0，ASP.NET MVC 3.0）

控制器操作从请求获取值并在响应对象中设置http标头。其他http上下文对象可以用类似的方式进行模拟

[TestClass]
public class MyControllerTest
{
    protected Mock<HttpContextBase> HttpContextBaseMock;
    protected Mock<HttpRequestBase> HttpRequestMock;
    protected Mock<HttpResponseBase> HttpResponseMock;

    [TestInitialize]
    public void TestInitialize()
    {
        HttpContextBaseMock = new Mock<HttpContextBase>();
        HttpRequestMock = new Mock<HttpRequestBase>();
        HttpResponseMock = new Mock<HttpResponseBase>();
        HttpContextBaseMock.SetupGet(x => x.Request).Returns(HttpRequestMock.Object);
        HttpContextBaseMock.SetupGet(x => x.Response).Returns(HttpResponseMock.Object);
    }

    protected MyController SetupController()
    {
        var routes = new RouteCollection();
        var controller = new MyController();
        controller.ControllerContext = new ControllerContext(HttpContextBaseMock.Object, new RouteData(), controller);
        controller.Url = new UrlHelper(new RequestContext(HttpContextBaseMock.Object, new RouteData()), routes);
        return controller;
    }

    [TestMethod]
    public void IndexTest()
    {
        HttpRequestMock.Setup(x => x["x"]).Returns("1");
        HttpResponseMock.Setup(x => x.AddHeader("name", "value"));

        var controller = SetupController();
        var result = controller.Index();
        Assert.AreEqual("1", result.Content);

        HttpRequestMock.VerifyAll();
        HttpResponseMock.VerifyAll();
    }
}

public class MyController : Controller
{
    public ContentResult Index()
    {
        var x = Request["x"];
        Response.AddHeader("name", "value");
        return Content(x);
    }
}

Answer 3

这是Jason链接的片段。它与菲尔的方法相同，但使用犀牛。

注意：mockHttpContext.Request被存根以返回mockRequest 之前 mockRequest的内部结构被删除。我相信这个订单是必需的。

// create a fake web context
var mockHttpContext = MockRepository.GenerateMock<HttpContextBase>();
var mockRequest = MockRepository.GenerateMock<HttpRequestBase>();
mockHttpContext.Stub(x => x.Request).Return(mockRequest);

// tell the mock to return "GET" when HttpMethod is called
mockRequest.Stub(x => x.HttpMethod).Return("GET");            

var controller = new AccountController();

// assign the fake context
var context = new ControllerContext(mockHttpContext, 
                  new RouteData(), 
                  controller);
controller.ControllerContext = context;

// act
...

Answer 4

这个过程似乎在MVC2中略有改变（我正在使用RC1）。如果行动需要特定方法（[HttpPost]，[HttpGet]），Phil Haack的解决方案对我不起作用。在Reflector中浏览，看起来验证这些属性的方法已经改变。 MVC现在检查request.Headers，request.Form和request.QueryString是否为X-HTTP-Method-Override值。

如果为这些属性添加模拟，它可以工作：

var request = new Mock<HttpRequestBase>();
request.Setup(r => r.HttpMethod).Returns("POST");
request.Setup(r => r.Headers).Returns(new NameValueCollection());
request.Setup(r => r.Form).Returns(new NameValueCollection());
request.Setup(r => r.QueryString).Returns(new NameValueCollection());

var mockHttpContext = new Mock<HttpContextBase>();
mockHttpContext.Expect(c => c.Request).Returns(request.Object);
var controllerContext = new ControllerContext(mockHttpContext.Object, new RouteData(), new Mock<ControllerBase>().Object);

Answer 5

或者您可以使用Typemock Isolator执行此操作，而无需发送假控制器：

Isolate.WhenCalled(()=>HttpContext.Request.HttpMethod).WillReturn("Get");

Answer 6

我已经完成了这个规范

public abstract class Specification <C> where C: Controller
{
    protected C controller;

    HttpContextBase mockHttpContext;
    HttpRequestBase mockRequest;

    protected Exception ExceptionThrown { get; private set; }

    [SetUp]
    public void Setup()
    {
        mockHttpContext = MockRepository.GenerateMock<HttpContextBase>();
        mockRequest = MockRepository.GenerateMock<HttpRequestBase>();

        mockHttpContext.Stub(x => x.Request).Return(mockRequest);
        mockRequest.Stub(x => x.HttpMethod).Return("GET");


        EstablishContext();
        SetHttpContext();

        try
        {
            When();
        }
        catch (Exception exc)
        {
            ExceptionThrown = exc;
        }
    }

    protected void SetHttpContext()
    {
        var context = new ControllerContext(mockHttpContext, new RouteData(), controller);
        controller.ControllerContext = context;
    }

    protected T Mock<T>() where T: class
    {
        return MockRepository.GenerateMock<T>();
    }

    protected abstract void EstablishContext();
    protected abstract void When();

    [TearDown]
    public virtual void TearDown()
    {
    }
}

果汁就在这里

[TestFixture]
public class When_invoking_ManageUsersControllers_Update :Specification   <ManageUsersController>
{
    private IUserRepository userRepository;
    FormCollection form;

    ActionResult result;
    User retUser;

    protected override void EstablishContext()
    {
        userRepository = Mock<IUserRepository>();
        controller = new ManageUsersController(userRepository);

        retUser = new User();
        userRepository.Expect(x => x.GetById(5)).Return(retUser);
        userRepository.Expect(x => x.Update(retUser));

        form = new FormCollection();
        form["IdUser"] = 5.ToString();
        form["Name"] = 5.ToString();
        form["Surename"] = 5.ToString();
        form["Login"] = 5.ToString();
        form["Password"] = 5.ToString();
    }

    protected override void When()
    {
        result = controller.Edit(5, form);
    }

    [Test]
    public void is_retrieved_before_update_original_user()
    {
        userRepository.AssertWasCalled(x => x.GetById(5));
        userRepository.AssertWasCalled(x => x.Update(retUser));
    }
}

享受

Answer 7

我发现长时间的嘲弄过程太过摩擦了。

我们发现的最佳方法 - 在真实项目中使用ASP.NET MVC - 是将HttpContext抽象为简单传递的IWebContext接口。然后你可以毫不费力地模拟IWebContext。

这是example

模拟Asp.net-mvc控制器上下文

7 个答案: