Issue while testing route entries using mvccontrib test helper in MVC4

Question

I am trying to write test methods for Route entries and in my route config there were a lot of entries for different action. I am using MvcContrib.TestHelper for Testing . I am new to MVC as well as TDD. Kindly help me to solve this issue. My test case is failing and what can I do to make it pass .

Route Entry

 routes.MapRoute(
            name: "X1Details",
            url: "X1/{X1ID}",
            defaults: new { controller = "X1", action = "Index", X1ID = "X1ID" }
            );

X1Controller

   public ActionResult Index(int? instanceID = 0,  string  InfoMsg ="")
   {
   }

Test Method

[Test Method]
     public void Should_Route_X1Index()
            {

                "~/X1/"
                    .ShouldMapTo<X1Controller>(action => action.Index(null, ""));

            }

Error

Test method XXX.Tests.MVCContibRouteMapTest.Should_Route_X1IndexOf threw exception: MvcContrib.TestHelper.AssertionException: Value for parameter 'InfoMsg' did not match: expected '' but was ''; no value found in the route context action parameter named 'InfoMsg' - does your matching route contain a token called 'InfoMsg'?

Thanks in advance.

Answer 1

Default values don't work well with MVCContrib helper. You could modify your controller action like so:

public ActionResult Index(int? instanceID, string InfoMsg)
{
    ...
}

and then:

"~/X1".ShouldMapTo<X1Controller>(action => action.Index(null, null));

Answer 2

I've found this approach to work, which should allow your controllers to remain the same

[Test Method]
public void Should_Route_X1Index()
{
     var routeData = "~/X1/".Route();
     routeData.Values["InfoMsg "] = "";
     routeData.Values["instanceID"] = "0";
     routeData.ShouldMapTo<X1Controller>(action => action.Index(0, ""));
}