public void private_methods_are_invalid()
 {
     Exception <InvalidActionFilterTypeException> .ShouldBeThrownBy(() =>
     {
         FilterAttribute.DetermineMethod(typeof(InvalidFilter3));
     });
 }
 public void one_method_is_valid()
 {
     FilterAttribute.DetermineMethod(typeof(ValidFilter))
     .Name.ShouldEqual("Filter");
 }