動的クラスメソッド定義

# -*- coding: utf-8 -*-
module A

  def self.included(base)
    base.class_eval do
      extend ClassMethods
      test_class_method
    end
  end

  module ClassMethods
    def test_class_method
      puts "called test_class_method:"
      puts "self:"
      p self
      (class << self; self end).instance_eval do
        define_method 'test_method' do |*args|
          puts "called test_method"
        end
      end
    end
  end

end

class AA
  include A
end


#クラスメソッドが定義される
AA.test_method