Move multibyte test helpers to a separate file and make the conformance tests run again.

activesupport/test/multibyte_chars_test.rb

 # encoding: utf-8
 
 require 'abstract_unit'
-
-module MultibyteTest
-  UNICODE_STRING = 'こにちわ'
-  ASCII_STRING = 'ohayo'
-  BYTE_STRING = "\270\236\010\210\245"
-
-  def chars(str)
-    ActiveSupport::Multibyte::Chars.new(str)
-  end
-
-  def inspect_codepoints(str)
-    str.to_s.unpack("U*").map{|cp| cp.to_s(16) }.join(' ')
-  end
-
-  def assert_equal_codepoints(expected, actual, message=nil)
-    assert_equal(inspect_codepoints(expected), inspect_codepoints(actual), message)
-  end
-end
+require 'multibyte_test_helpers'
 
 class String
   def __method_for_multibyte_testing_with_integer_result; 1; end
@@ -27,7 +10,7 @@ def __method_for_multibyte_testing!; 'result'; end
 end
 
 class MultibyteCharsTest < Test::Unit::TestCase
-  include MultibyteTest
+  include MultibyteTestHelpers
 
   def setup
     @proxy_class = ActiveSupport::Multibyte::Chars
@@ -113,7 +96,7 @@ def test_concatenate_should_return_proxy_instance
 end
 
 class MultibyteCharsUTF8BehaviourTest < Test::Unit::TestCase
-  include MultibyteTest
+  include MultibyteTestHelpers
 
   def setup
     @chars = UNICODE_STRING.dup.mb_chars
@@ -445,7 +428,7 @@ def test_acts_like_string
 # for the implementation of these features should run on all Ruby versions and shouldn't be tested
 # through the proxy methods.
 class MultibyteCharsExtrasTest < Test::Unit::TestCase
-  include MultibyteTest
+  include MultibyteTestHelpers
 
   if RUBY_VERSION >= '1.9'
     def test_tidy_bytes_is_broken_on_1_9_0

activesupport/test/multibyte_conformance.rb

+# encoding: utf-8
+
 require 'abstract_unit'
+require 'multibyte_test_helpers'
+
 require 'fileutils'
 require 'open-uri'
 require 'tmpdir'
@@ -22,7 +26,7 @@ def self.download(from, to)
 end
 
 class MultibyteConformanceTest < Test::Unit::TestCase
-  include MultibyteTest
+  include MultibyteTestHelpers
   
   UNIDATA_URL = "http://www.unicode.org/Public/#{ActiveSupport::Multibyte::UNICODE_VERSION}/ucd"
   UNIDATA_FILE = '/NormalizationTest.txt'

activesupport/test/multibyte_test_helpers.rb

+module MultibyteTestHelpers
+  UNICODE_STRING = 'こにちわ'
+  ASCII_STRING = 'ohayo'
+  BYTE_STRING = "\270\236\010\210\245"
+
+  def chars(str)
+    ActiveSupport::Multibyte::Chars.new(str)
+  end
+
+  def inspect_codepoints(str)
+    str.to_s.unpack("U*").map{|cp| cp.to_s(16) }.join(' ')
+  end
+
+  def assert_equal_codepoints(expected, actual, message=nil)
+    assert_equal(inspect_codepoints(expected), inspect_codepoints(actual), message)
+  end
+end
\ No newline at end of file