Unit testing if methods find and return a view in ASP.NET - asp.net

Question

I'm new to ASP.NET and I'm refactoring some functionalities in my MVC-structured ASP.NET application into area's. This has already lead to controller-methods not able to find their views anymore, which results in the following page:
To test if all controllers can find their views, I'd like to write some automated unit tests for this.
I have came up with the following:
[TestMethod]
public void AboutTest()
{
var controller = new HomeController();
var result = controller.About() as ViewResult;
Assert.IsNotNull(result);
}
which tests the About-method in the following code:
public class HomeController : Controller
{
public ActionResult About()
{
return View();
}
public ActionResult Contact()
{
return View("~/Views/SomeFolder/Contact.cshtml");
}
}
But even when the HomeControllers About-method can not find a view, this assert succeeds, so this does not work for me.
I have found a solution online to use use ViewEngine.FindView() here. I don't think I can use this, since in some controllers the views are referenced by a hardcoded string (see the contact method in the example controller above) instead of just returning the default view (simularly named as its method). The ViewEngine.FindView(controller.ControllerContext, "about", "about"); will then fail, but the controller-method would not.
Another solution states to use Assert.IsEqual() and check if the result.ViewName is equal to a hardcoded string (for example: "About"). Since I do not set or know the title of the views I'm expecting to get returned, this would not be a solution either.
(How) would I be able to test my application for this?

Answer 1

You shouldn't check for null, it will return a ViewResult even when it doesn't render.
To test whether it actually renders use AssertViewRendered from mvccontrib.
[TestMethod]
public void AboutTest()
{
var controller = new HomeController();
var result = controller.About().AssertViewRendered();
}
You can even check for a specific view like so:
result.AssertViewRendered().ForView(MVC.Your.Views.AboutView);
Or supply data like so:
controller.page().AssertViewRendered().ForView("page").WithViewData<SomeModel>();
For an interactive tutorial with lots of pictures I can recommend: http://toreaurstad.blogspot.nl/2011/09/adventures-with-mvccontrib-testhelper.html
Edit:
You might also check out Selenium to test your entire app (incl. rendering of 200 routes).