Mocking HttpContext for MVC route testing

First I have to say thx a bunch to MS for releasing the CTP of the MCV framework. This really is Da Bomb. I think they are doing a great job here.

So I am setting up my first MVC.NET based site, while digging through all the relevant posts on how to use the framework. So while setting up my routes, doing the proper TDD, I stumble upon the MockHttpContext for testing routes in ScottGu's part 2. This bugger is not explained anywhere nor part of the framework. So you have to whip up your own. Googling it - lazy as I am turned up nothing. DIY time. But being the friendly coder, I will share what I made.

So without further ado - here is how you could create a MockHttpContext for testing your routes using Rhino.Mocks. Note, I have used the same way of setting up the routes as Scott is showing in his post.

[TestFixture]
public class RoutesTest
{
    protected RouteCollection routes;
    protected MockRepository mockery;

    [SetUp]
    public void SetUp()
    {
        routes = new RouteCollection();
        Global application = new Global();
        application.RegisterRoutes(routes);
        mockery = new MockRepository();
    }

    protected IHttpContext MockContextFactory(string url)
    {
        IHttpContext httpContext = mockery.Stub<IHttpContext>();
        IHttpRequest httpRequest = mockery.Stub<IHttpRequest>();
        SetupResult.For(httpRequest.AppRelativeCurrentExecutionFilePath).Return("~" + url);
        SetupResult.For(httpContext.Request).Return(httpRequest);
        return httpContext;
    }

    [Test]
    public void TestRouteRegistration()
    {
        Assert.IsNotEmpty(routes, "We have filled the routes list");
    }

    [Test]
    public void SearchRouteExists()
    {
        IHttpContext httpContext;
        using (mockery.Record())
        {
            httpContext = MockContextFactory("/Search/Beverages/2");
        }
        using (mockery.Playback())
        {
            RouteData routeData = routes.GetRouteData(httpContext);
            Assert.IsNotNull(routeData, "There is a route to the URL");
            Assert.AreEqual("Search", routeData.Values["controller"], "We are using the search controller");
            Assert.AreEqual("Results", routeData.Values["action"], "With the details action");
            Assert.AreEqual("Beverages", routeData.Values["query"], "And the correct query");
            Assert.AreEqual("2", routeData.Values["page"], "And the correct page index");
        }
    }
}