title: ASP.NET MVC test for action filters
body: <p>How can i write test case for action filters? I am using forms authentication.
  I have base controller decorated with RequiresAuthentication action filter. When i execute the controller's test case, i am not getting the loggedin user's data from the cookies.</p>
  
  <p>I am using Moq; does it provide a way to achieve my goal?</p>