def evaluate(actual, expected)
      if expected == actual
        pass new_message.is_equal_to(expected)
      else
        fail expected_message(expected).not(actual)
      end
    end
def evaluate(actual, expected)
      if expected == actual
        pass new_message.is_equal_to(expected)
      else
        fail expected_message(expected).not(actual)
      end
    end
(see Riot::AssertionMacro#evaluate)
 @param [Object] expected the object value to compare actual to