vendor/plugins/rubyzip-0.9.1/lib/quiz1/t/solutions/Jim Menard/test.rb

   1 #! /usr/bin/env ruby
   2
   3 require 'test/unit.rb'
   4 require 'test/unit/ui/console/testrunner'
   5 require 'solitaire_cypher.rb'
   6
   7 class SolitaireCypherTest < Test::Unit::TestCase
   8
   9     KNOWN_PLAINTEXT = 'CODEI NRUBY LIVEL ONGER'
  10     KNOWN_CYPHER = 'GLNCQ MJAFF FVOMB JIYCB'
  11
  12     def setup
  13         @deck = Deck.new.key
  14         @crypt_keeper = CryptKeeper.new(@deck)
  15     end
  16
  17     def test_value_to_chr
  18         assert_equal('A', Card.value_to_chr(1))
  19         assert_equal('Z', Card.value_to_chr(26))
  20     end
  21
  22     def test_chr_to_value
  23         assert_equal(1, Card.chr_to_value("A"))
  24         assert_equal(26, Card.chr_to_value("Z"))
  25     end
  26
  27     def test_keystream
  28         expected = %w(D W J X H Y R F D G)
  29         deck = Deck.new.key
  30         expected.each { | exp |
  31             key = deck.next_keystream
  32             if exp != Card.value_to_chr(key)
  33                 @errors << "expected #{exp}, key = #{Card.value_to_chr(key)}"
  34             end
  35         }
  36     end
  37
  38     def test_decrypt_known_cypher
  39         assert_equal(KNOWN_PLAINTEXT, @crypt_keeper.decrypt(KNOWN_CYPHER))
  40     end
  41
  42     def test_encrypt_known_message
  43         assert_equal(KNOWN_CYPHER, @crypt_keeper.encrypt(KNOWN_PLAINTEXT))
  44     end
  45 end
  46
  47 Test::Unit::UI::Console::TestRunner.run(SolitaireCypherTest)