テストプログラムの実行
 Loaded suite prog2
 Started
 .
 Finished in 0.001761 seconds.
 1 tests, 4 assertions, 0 failures, 0 errors
間違った場合 

 require 'test/unit'
 require 'romakana'
 class TestRomakana < Test::Unit::TestCase
 　def test_000
 　　assert_equal("kisya".roma2hiragana,"きしゃ")
 　　assert_equal("kisya","きしゃ".hiragana2roma)
 　end
 end