Created
July 28, 2014 16:28
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# | |
# ruby implementation of | |
# https://github.com/domnikl/DesignPatternsPHP/tree/master/Structural/Adapter | |
# for reno developers meetup 2014-07-28 | |
# https://github.com/renodevelopers/meetups/issues/26 | |
# | |
module DesignPatterns | |
module Structural | |
module Adapter | |
# legacy interface (paper) | |
class Book | |
def open; 'open'; end | |
def turn_page; 'turn_page'; end | |
end | |
# book 2.0 (ebook) | |
class Kindle | |
def press_next; 'press_next'; end | |
def press_start; 'press_start'; end | |
end | |
class EBookToBookAdapter < Struct.new(:ebook) | |
def open | |
ebook.press_start | |
end | |
def turn_page | |
ebook.press_next | |
end | |
end | |
if $0 == __FILE__ | |
require 'test/unit' | |
class EBookToBookAdapterTest < Test::Unit::TestCase | |
def test | |
kindle = Kindle.new | |
kindle_book = EBookToBookAdapter.new(kindle) | |
assert_equal 'press_start', kindle_book.open | |
assert_equal 'press_next', kindle_book.turn_page | |
end | |
end | |
end | |
end | |
end | |
end |
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