How do I mock the HttpContext in ASP.NET MVC using Moq?
C#asp.net MvcMockingMoqHttpcontextC# Problem Overview
[TestMethod]
public void Home_Message_Display_Unknown_User_when_coockie_does_not_exist()
{
var context = new Mock<HttpContextBase>();
var request = new Mock<HttpRequestBase>();
context
.Setup(c => c.Request)
.Returns(request.Object);
HomeController controller = new HomeController();
controller.HttpContext = context; //Here I am getting an error (read only).
...
}
my base controller has an overrride of the Initialize that get's this requestContext. I am trying to pass this along but I am not doing something right.
protected override void Initialize(System.Web.Routing.RequestContext requestContext)
{
base.Initialize(requestContext);
}
Where can I get more information on mocking my RequestContext and HttpContext using Moq? I am trying to mock cookies and the general context.
C# Solutions
Solution 1 - C#
HttpContext is read-only, but it is actually derived from the ControllerContext, which you can set.
controller.ControllerContext = new ControllerContext( context.Object, new RouteData(), controller );
Solution 2 - C#
Create a request, response and put them both to HttpContext:
HttpRequest httpRequest = new HttpRequest("", "http://mySomething/", "");
StringWriter stringWriter = new StringWriter();
HttpResponse httpResponse = new HttpResponse(stringWriter);
HttpContext httpContextMock = new HttpContext(httpRequest, httpResponse);
Solution 3 - C#
Thanks user 0100110010101.
It worked for me and here i had an issue while writing the testcase for the below code :
var currentUrl = Request.Url.AbsoluteUri;
And here is the lines which solved the problem
HomeController controller = new HomeController();
//Mock Request.Url.AbsoluteUri
HttpRequest httpRequest = new HttpRequest("", "http://mySomething", "");
StringWriter stringWriter = new StringWriter();
HttpResponse httpResponse = new HttpResponse(stringWriter);
HttpContext httpContextMock = new HttpContext(httpRequest, httpResponse);
controller.ControllerContext = new ControllerContext(new HttpContextWrapper(httpContextMock), new RouteData(), controller);
Might be helpful for the others.
Solution 4 - C#
Here's how I used the ControllerContext to pass a fake Application path:
[TestClass]
public class ClassTest
{
private Mock<ControllerContext> mockControllerContext;
private HomeController sut;
[TestInitialize]
public void TestInitialize()
{
mockControllerContext = new Mock<ControllerContext>();
sut = new HomeController();
}
[TestCleanup]
public void TestCleanup()
{
sut.Dispose();
mockControllerContext = null;
}
[TestMethod]
public void Index_Should_Return_Default_View()
{
// Expectations
mockControllerContext.SetupGet(x => x.HttpContext.Request.ApplicationPath)
.Returns("/foo.com");
sut.ControllerContext = mockControllerContext.Object;
// Act
var failure = sut.Index();
// Assert
Assert.IsInstanceOfType(failure, typeof(ViewResult), "Index() did not return expected ViewResult.");
}
}
Solution 5 - C#
Here is an example of how you can set this up: Mocking HttpContext HttpRequest and HttpResponse for UnitTests (using Moq)
Note the extension methods which really help to simplify the usage of this mocking classes:
var mockHttpContext = new API_Moq_HttpContext();
var httpContext = mockHttpContext.httpContext();
httpContext.request_Write("<html><body>".line());
httpContext.request_Write(" this is a web page".line());
httpContext.request_Write("</body></html>");
return httpContext.request_Read();
Here is an example of how to write a Unit Test using moq to check that an HttpModule is working as expected: Unit Test for HttpModule using Moq to wrap HttpRequest
Update: this API has been refactored to
- HttpContextFactory.cs
- these multiple Http* Extension Methods files
Solution 6 - C#
var httpResponse = new HttpResponseMessage(HttpStatusCode.OK);
httpResponse.Content = new StringContent("Your response text");