如何在 ASP.Net MVC 中模拟控制器上的请求? [英] How to mock the Request on Controller in ASP.Net MVC?

问题描述

我有一个使用 ASP.Net MVC 框架的 C# 控制器

I have a controller in C# using the ASP.Net MVC framework

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

我得到了一些关于模拟的技巧，并希望使用以下和 RhinoMocks 测试代码

I got some tips on mocking and was hoping to test the code with the following and RhinoMocks

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);

但是我不断收到此错误:

However I keep getting this error:

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

Exception System.ArgumentNullException: System.ArgumentNullException : Value cannot be null. Parameter name: request at System.Web.Mvc.AjaxRequestExtensions.IsAjaxRequest(HttpRequestBase request)

因为控制器上的 Request 对象没有设置器.我尝试使用以下答案中的推荐代码使此测试正常运行.

Since the Request object on the controller has no setter. I tried to get this test working properly by using recommended code from an answer below.

这里使用的是 Moq 而不是 RhinoMocks，在使用 Moq 时，我使用以下内容进行相同的测试:

This used Moq instead of RhinoMocks, and in using Moq I use the following for the same test:

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:

异常 System.ArgumentException:System.ArgumentException:无效在不可覆盖的成员上设置:x=> x.Headers["X-Requested-With"] at Moq.Mock.ThrowIfCantOverride(Expression设置，MethodInfo methodInfo)

Exception System.ArgumentException: System.ArgumentException : Invalid setup on a non-overridable member: x => x.Headers["X-Requested-With"] at Moq.Mock.ThrowIfCantOverride(Expression setup, MethodInfo methodInfo)

再说一次，我似乎无法设置请求标头.如何在 RhinoMocks 或 Moq 中设置此值?

Again, it seems like I cannot set the request header. How do I set this value, in RhinoMocks or Moq?

推荐答案

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:

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

Mock Request.Headers["X-Requested-With"] or Request["X-Requested-With"] instead of Request.IsAjaxRequest().

这篇关于如何在 ASP.Net MVC 中模拟控制器上的请求?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！