How do I mock the HttpContext in ASP.NET MVC using Moq?

Question

[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.

Sachin Kainth · Accepted Answer · 2014-01-10 18:13:04Z

71

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 );

edited Jan 10, 2014 at 18:13

Sachin Kainth

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answered Sep 21, 2009 at 1:05

tvanfosson

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1 Comment

Joel Malone Over a year ago

This one worked for me by allowing me to set a mock HttpContext on the controller.

Sklivvz · Accepted Answer · 2013-04-25 12:46:20Z

43

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);

edited Apr 25, 2013 at 12:46

Sklivvz

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answered Sep 21, 2009 at 14:30

0100110010101

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6 Comments

Chris Kimpton Over a year ago

The question is about the *Base classes, ie HttpRequestBase, not HttpRequest - not sure why both are needed myself and even more annoying that they are "sealed". No way to set LogonUserIdentity :(

0100110010101 Over a year ago

If they're marshalled my reference, it's still possible via remoting, so it shouldn't be a problem.

Oliver Over a year ago

@ChrisKimpton: As a last resort, there's always reflection ;-)

Andreas Vendel Over a year ago

This works when attaching it to the controller, like this: controller.ControllerContext = new ControllerContext( new HttpContextWrapper(httpContextMock), new RouteData(), controller);

KevinDeus Over a year ago

yes. you can indeed set .LogonUserIdentity -- _request.Setup(n => n.LogonUserIdentity).Returns((WindowsIdentity.GetCurrent));

|

Chandan Kumar · Accepted Answer · 2015-06-30 12:02:55Z

16

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.

answered Jun 30, 2015 at 12:02

Chandan Kumar

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3 Comments

Vincent Buscarello Over a year ago

I can't seem to use the HttpRequest type - is that something else now?

A X Over a year ago

This is not useful because all the fields in HttpRequest are immutable

Adel Mourad Over a year ago

I also had to use this to fix the RouteData stackoverflow.com/a/57005125/1594274

Ria · Accepted Answer · 2012-11-08 10:16:44Z

7

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.");
    }
}

edited Nov 8, 2012 at 10:16

Ria

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answered Oct 27, 2011 at 21:51

Xolartek

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2 Comments

the_law Over a year ago

Why'd you need to pass a fake application path?

Joshua Ramirez Over a year ago

The MVC code will execute it and throw a null exception if it's not there.

Dinis Cruz · Accepted Answer · 2014-09-04 23:43:09Z

4

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

edited Sep 4, 2014 at 23:43

answered Apr 10, 2011 at 3:21

Dinis Cruz

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1 Comment

Hades Over a year ago

Links are broken - please include the code in your answer

Fabricio Leite · Accepted Answer · 2021-08-13 18:10:59Z

-1

var httpResponse = new HttpResponseMessage(HttpStatusCode.OK);
httpResponse.Content = new StringContent("Your response text");

answered Aug 13, 2021 at 18:10

Fabricio Leite

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