From a8f4f427e8e5bb2261c9dbb78e36f9b9fe1b44cb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Mota?= <jose@josemota.net>
Date: Thu, 2 May 2013 21:02:49 +0100
Subject: [PATCH] Form Template Method.

---
 form-template-method/lib/after.rb  | 28 ++++++++++++++++++++++++++++
 form-template-method/lib/before.rb | 20 ++++++++++++++++++++
 form-template-method/test/test.rb  | 15 +++++++++++++++
 3 files changed, 63 insertions(+)

diff --git a/form-template-method/lib/after.rb b/form-template-method/lib/after.rb
index e69de29..ed75630 100644
--- a/form-template-method/lib/after.rb
+++ b/form-template-method/lib/after.rb
@@ -0,0 +1,28 @@
+class Ticket
+  attr_reader :price
+
+  def initialize
+    @price = 2.0
+  end
+
+  def price *args
+    @price * discount
+  end
+
+  def discount
+    1
+  end
+
+end
+
+class SeniorTicket < Ticket
+  def discount
+    0.75
+  end
+end
+
+class JuniorTicket < Ticket
+  def discount
+    0.5
+  end
+end
diff --git a/form-template-method/lib/before.rb b/form-template-method/lib/before.rb
index e69de29..ecb30c0 100644
--- a/form-template-method/lib/before.rb
+++ b/form-template-method/lib/before.rb
@@ -0,0 +1,20 @@
+class Ticket
+  attr_reader :price
+
+  def initialize
+    @price = 2.0
+  end
+
+end
+
+class SeniorTicket < Ticket
+  def price
+    @price * 0.75
+  end
+end
+
+class JuniorTicket < Ticket
+  def price
+    @price * 0.5
+  end
+end
diff --git a/form-template-method/test/test.rb b/form-template-method/test/test.rb
index a8f6974..355d826 100644
--- a/form-template-method/test/test.rb
+++ b/form-template-method/test/test.rb
@@ -3,3 +3,18 @@
 
 require 'before' if ENV["BEFORE"]
 require 'after' unless ENV["BEFORE"]
+
+describe Ticket do
+  it "has a calculated price" do
+    Ticket.new.price.must_equal 2.0
+  end
+
+  it "costs less if a senior" do
+    SeniorTicket.new.price.must_equal 1.5
+  end
+
+  it "costs less if a junior" do
+    JuniorTicket.new.price.must_equal 1.0
+  end
+
+end