alias_method_chain quiz

gistfile1.rb

require 'test/unit'
require 'rubygems'
gem 'activesupport'
require 'active_support/core_ext/module'

class Original
  def hello
    "Original"
  end
end

module FeatureA
  def self.included(base)
    base.class_eval do
      alias_method_chain :hello, :feature_a
    end
  end

  def hello_with_feature_a
    hello_without_feature_a + "FeatureA"
  end
end

module FeatureB
  def self.included(base)
    base.class_eval do
      alias_method_chain :hello, :feature_b
    end
  end

  def hello_with_feature_b
    hello_without_feature_b + "FeatureB"
  end
end

Original.class_eval do
  include FeatureA
  include FeatureB
end


#### 수정내용 ######

class Original
  def hello_without_feature_b
    hello_without_feature_a + "FeatureC"
  end
end

# 테스트 가능하도록 메서드를 조금 변경했어요.
###################

class OriginalTest < Test::Unit::TestCase
  def setup
    @original = Original.new
  end

  # def teardown
  # end

  def test_hello
    assert_equal("OriginalFeatureCFeatureB", @original.hello)
  end
end