如何在ASP.Net MVC模拟控制器上的请求？

我有一个控制器在C＃使用ASP.Net MVC框架

public class HomeController:Controller{ public ActionResult Index() { if (Request.IsAjaxRequest()) { //do some ajaxy stuff } return View("Index"); } } 

我有一些嘲讽的技巧，并希望用以下和RhinoMockstesting代码

 var mocks = new MockRepository(); var mockedhttpContext = mocks.DynamicMock<HttpContextBase>(); var mockedHttpRequest = mocks.DynamicMock<HttpRequestBase>(); SetupResult.For(mockedhttpContext.Request).Return(mockedHttpRequest); var controller = new HomeController(); controller.ControllerContext = new ControllerContext(mockedhttpContext, new RouteData(), controller); var result = controller.Index() as ViewResult; Assert.AreEqual("About", result.ViewName); 

不过，我不断收到这个错误：

exceptionSystem.ArgumentNullException：System.ArgumentNullException：值不能为空。 参数名称：请求在System.Web.Mvc.AjaxRequestExtensions.IsAjaxRequest（HttpRequestBase请求）

由于控制器上的Request对象没有setter。 我试图通过使用下面的答案推荐的代码来正确工作。

这使用Moq而不是RhinoMocks，并在使用Moq我使用以下相同的testing：

 var request = new Mock<HttpRequestBase>(); // Not working - IsAjaxRequest() is static extension method and cannot be mocked // request.Setup(x => x.IsAjaxRequest()).Returns(true /* or false */); // use this request.SetupGet(x => x.Headers["X-Requested-With"]).Returns("XMLHttpRequest"); var context = new Mock<HttpContextBase>(); context.SetupGet(x => x.Request).Returns(request.Object); var controller = new HomeController(Repository, LoginInfoProvider); controller.ControllerContext = new ControllerContext(context.Object, new RouteData(), controller); var result = controller.Index() as ViewResult; Assert.AreEqual("About", result.ViewName); 

但得到以下错误：

exceptionSystem.ArgumentException：System.ArgumentException：对不可重写成员的无效设置：x => x.Headers [“X-Requested-With”] at Moq.Mock.ThrowIfCantOverride（Expression setup，MethodInfo methodInfo）

再次，似乎我不能设置请求标题。 如何在RhinoMocks或Moq中设置这个值？

Answer 1

使用Moq ：

 var request = new Mock<HttpRequestBase>(); // Not working - IsAjaxRequest() is static extension method and cannot be mocked // request.Setup(x => x.IsAjaxRequest()).Returns(true /* or false */); // use this request.SetupGet(x => x.Headers).Returns( new System.Net.WebHeaderCollection { {"X-Requested-With", "XMLHttpRequest"} }); var context = new Mock<HttpContextBase>(); context.SetupGet(x => x.Request).Returns(request.Object); var controller = new YourController(); controller.ControllerContext = new ControllerContext(context.Object, new RouteData(), controller); 

更新：

模拟Request.Headers["X-Requested-With"]或Request["X-Requested-With"]而不是Request.IsAjaxRequest() 。

Answer 2

这是一个使用RhinoMocks的工作解决scheme。 我已经根据我在http://thegrayzone.co.uk/blog/2010/03/mocking-request-isajaxrequest/上find的Moq解决scheme

 public static void MakeAjaxRequest(this Controller controller) { MockRepository mocks = new MockRepository(); // Create mocks var mockedhttpContext = mocks.DynamicMock<HttpContextBase>(); var mockedHttpRequest = mocks.DynamicMock<HttpRequestBase>(); // Set headers to pretend it's an Ajax request SetupResult.For(mockedHttpRequest.Headers) .Return(new WebHeaderCollection() { {"X-Requested-With", "XMLHttpRequest"} }); // Tell the mocked context to return the mocked request SetupResult.For(mockedhttpContext.Request).Return(mockedHttpRequest); mocks.ReplayAll(); // Set controllerContext controller.ControllerContext = new ControllerContext(mockedhttpContext, new RouteData(), controller); } 

Answer 3

对于任何使用NSubstitute的人，我都能够修改上面的答案，并做这样的事情…（其中Details是控制器上的Action方法名称）

  var fakeRequest = Substitute.For<HttpRequestBase>(); var fakeContext = Substitute.For<HttpContextBase>(); fakeRequest.Headers.Returns(new WebHeaderCollection { {"X-Requested-With", "XMLHttpRequest"}}); fakeContext.Request.Returns(fakeRequest); controller.ControllerContext = new ControllerContext(fakeContext, new RouteData(), controller); var model = new EntityTypeMaintenanceModel(); var result = controller.Details(model) as PartialViewResult; Assert.IsNotNull(result); Assert.AreEqual("EntityType", result.ViewName); 

Answer 4

AjaxRequest是一个扩展方法。 所以你可以用下面的方法使用Rhino：

  protected HttpContextBase BuildHttpContextStub(bool isAjaxRequest) { var httpRequestBase = MockRepository.GenerateStub<HttpRequestBase>(); if (isAjaxRequest) { httpRequestBase.Stub(r => r["X-Requested-With"]).Return("XMLHttpRequest"); } var httpContextBase = MockRepository.GenerateStub<HttpContextBase>(); httpContextBase.Stub(c => c.Request).Return(httpRequestBase); return httpContextBase; } // Build controller .... controller.ControllerContext = new ControllerContext(BuildHttpContextStub(true), new RouteData(), controller); 

Answer 5

你需要嘲笑HttpContextBase并把它放到你的ControllerContext属性中，像这样：

 controller.ControllerContext = new ControllerContext(mockedHttpContext, new RouteData(), controller); 

在这里你可以看到如何模拟Form集合，你的场景会是类似的： 在ASP.NET MVC中嘲讽HttpRequest

Answer 6

看起来你正在寻找这个，

  var requestMock = new Mock<HttpRequestBase>(); requestMock.SetupGet(rq => rq["Age"]).Returns("2001"); 

控制器中的用法：

  public ActionResult Index() { var age = Request["Age"]; //This will return 2001 } 

Answer 7

要在unit testing期间使IsAjaxRequest()返回false，您需要在您的testing方法中设置Request Headers以及请求集合值，如下所示：

 _request.SetupGet(x => x.Headers).Returns(new System.Net.WebHeaderCollection { { "X-Requested-With", "NotAjaxRequest" } }); _request.SetupGet(x=>x["X-Requested-With"]).Returns("NotAjaxRequest"); 

设置的原因隐藏在下面给出的IsAjaxRequest（）的实现中：

 public static bool IsAjaxRequest(this HttpRequestBase request)<br/> { if (request == null) { throw new ArgumentNullException("request"); } return ((request["X-Requested-With"] == "XMLHttpRequest") || ((request.Headers != null) && (request.Headers["X-Requested-With"] == "XMLHttpRequest"))); } 

它同时使用请求集合和标题，这就是为什么我们需要为标题和请求集合创build设置。

这将使请求返回false，当它不是一个Ajax请求。 要使其返回true，您可以执行以下操作：

 _httpContext.SetupGet(x => x.Request["X-Requested-With"]).Returns("XMLHttpRequest");