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");
}
}
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);
However I keep getting this error:
Exception
System.ArgumentNullException:
System.ArgumentNullException : Value
cannot be null. Parameter name:
request at
System.Web.Mvc.AjaxRequestExtensions.IsAjaxRequest(HttpRequestBase
request)
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.
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);
but get the following error:
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)
Again, it seems like I cannot set the request header.
How do I set this value, in RhinoMocks or Moq?
Best Answer
Using Moq:
UPDATED:
Mock
Request.Headers["X-Requested-With"]
orRequest["X-Requested-With"]
instead ofRequest.IsAjaxRequest()
.