I have a couple of ActionMethods that queries the Controller.User for its role like this

```
bool isAdmin = User.IsInRole("admin");

```

acting conveniently on that condition.

I'm starting to make tests for these methods with code like this

```
[TestMethod]
public void HomeController_Index_Should_Return_Non_Null_ViewPage()
{
    HomeController controller  = new HomePostController();
    ActionResult index = controller.Index();

    Assert.IsNotNull(index);
}

```

and that Test Fails because Controller.User is not set.
Any idea?