1 require File.expand_path(File.dirname(__FILE__) + '/edgecase')
3 # Project: Create a Proxy Class
5 # In this assignment, create a proxy class (one is started for you
6 # below). You should be able to initialize the proxy object with any
7 # object. Any messages sent to the proxy object should be forwarded
8 # to the target object. As each message is sent, the proxy should
9 # record the name of the method sent.
11 # The proxy class is started for you. You will need to add a method
12 # missing handler and any other supporting methods. The specification
13 # of the Proxy class is given in the AboutProxyObjectProject koan.
16 def initialize(target_object)
17 @object = target_object
24 # The proxy object should pass the following Koan:
26 class AboutProxyObjectProject < EdgeCase::Koan
27 def test_proxy_method_returns_wrapped_object
28 # NOTE: The Television class is defined below
29 tv = Proxy.new(Television.new)
31 assert tv.instance_of?(Proxy)
34 def test_tv_methods_still_perform_their_function
35 tv = Proxy.new(Television.new)
37 # HINT Proxy class is defined above, may need tweaking...
41 assert_equal 10, tv.channel
45 def test_proxy_records_messages_sent_to_tv
46 tv = Proxy.new(Television.new)
51 assert_equal [:power, :channel=], tv.messages
54 def test_proxy_handles_invalid_messages
55 tv = Proxy.new(Television.new)
57 assert_raise(NoMethodError) do
62 def test_proxy_reports_methods_have_been_called
63 tv = Proxy.new(Television.new)
68 assert tv.called?(:power)
69 assert ! tv.called?(:channel)
72 def test_proxy_counts_method_calls
73 tv = Proxy.new(Television.new)
79 assert_equal 2, tv.number_of_times_called(:power)
80 assert_equal 1, tv.number_of_times_called(:channel=)
81 assert_equal 0, tv.number_of_times_called(:on?)
84 def test_proxy_can_record_more_than_just_tv_objects
85 proxy = Proxy.new("Code Mash 2009")
90 assert_equal ["CODE", "MASH", "2009"], result
91 assert_equal [:upcase!, :split], proxy.messages
96 # ====================================================================
97 # The following code is to support the testing of the Proxy class. No
98 # changes should be necessary to anything below this comment.
100 # Example class using in the proxy testing above.
102 attr_accessor :channel
117 # Tests for the Television class. All of theses tests should pass.
118 class TelevisionTest < EdgeCase::Koan
126 def test_it_also_turns_off
135 def test_edge_case_on_off
149 def test_can_set_the_channel
153 assert_equal 11, tv.channel