Ruby Unit Test

 require 'test/unit'

 module Test::Unit::Assertions
     def assert_equal_unorder(exp, act, msg = nil)
         # msg = message(msg) {}
         assert_equal(exp.to_set, act.to_set, msg)
     end
 end

 class TestKitty < Test::Unit::TestCase
     def test_kitty
         assert_equal_unorder([[]], partition(""))
         assert_equal_unorder([["a"]], partition("a"))
         assert_equal_unorder([["aa"], ["a", "a"]], partition("aa"))
         assert_equal_unorder([["a", "a"], ["aa"]], partition("aa"))
         assert_equal_unorder([["a", "b"]], partition("ab"))
         assert_equal_unorder([["aa","b"], ["a","a","b"]], partition("aab"))
     end
 end