Unit testing ASP.NET MVC redirection

Question

How do I Unit Test a MVC redirection?

public ActionResult Create(Product product)
{
    _productTask.Save(product);
    return RedirectToAction("Success");   
}

public ActionResult Success()
{ 
     return View();
}

Is Ayende's approach still the best way to go, with preview 5:

 public static void RenderView(this Controller self, string action) 
 {
    typeof(Controller).GetMethod("RenderView").Invoke(self,new object[] { action} ); 
 }

Seems odd to have to do this, especially as the MVC team have said they are writing the framework to be testable.

Answer 1

[TestFixture]
public class RedirectTester
{
    [Test]
    public void Should_redirect_to_success_action()
    {
        var controller = new RedirectController();
        var result = controller.Index() as RedirectToRouteResult;
        Assert.That(result, Is.Not.Null);
        Assert.That(result.Values["action"], Is.EqualTo("success"));
    }
}

public class RedirectController : Controller
{
    public ActionResult Index()
    {
        return RedirectToAction("success");
    }
}