keeping it real

Gemfile

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+source :rubygems
+gem 'httparty'

Gemfile.lock

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+GEM
+  remote: http://rubygems.org/
+  specs:
+    crack (0.1.8)
+    httparty (0.7.4)
+      crack (= 0.1.8)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  httparty

address_book/Rakefile

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+require 'rake/testtask'
+
+Rake::TestTask.new do |t|
+    t.libs << "test"
+    t.test_files = FileList['test/**/*_test.rb']
+    t.verbose = true
+  end

address_book/lib/person.rb

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+class Person
+  @people = {}
+  def initialize(name)
+    @name = name
+  end
+  def self.find_or_create(name)
+    @people[name] ||= Person.new(name)
+  end
+end

address_book/test/person_test.rb

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+require 'test/unit'
+require 'person'
+
+class PersonTest < Test::Unit::TestCase
+  def test_find_or_create
+    p1 = Person.find_or_create('Anthony Eden')
+    assert_not_nil p1
+    p2 = Person.find_or_create('Anthony Eden')
+    assert p1 == p2
+  end
+end