def evaluate(actual, expected)
      if actual.include?(expected)
        pass new_message.includes(expected)
      else
        fail expected_message(actual).to_include(expected)
      end
    end
def evaluate(actual, expected)
      if actual.include?(expected)
        pass new_message.includes(expected)
      else
        fail expected_message(actual).to_include(expected)
      end
    end
(see Riot::AssertionMacro#evaluate)
 @param [Object] expected the object that is expected to be included