# Thursday, 01 December 2011
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The Test Helpers are a great way to ease your testing needs with MVC.  If your using the Test Helpers to test your routing like so:

            "~/".ShouldMapTo<HomeController>(x => x.Index());

When you run your tests you’ll get the following error:

System.Security.VerificationException : Method MvcContrib.TestHelper.RouteTestingExtensions.ShouldMapTo: type argument 'Your Controller Name’ violates the constraint of type parameter 'TController'.

The fix is a binding direct.

Add an app.config to your test project and paste in the following:

    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
            <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
            <bindingRedirect oldVersion="" newVersion="" />

Happy Coding! Smile

Posted 12.01.2011  #    Comments [7]  |