Use multibyte proxy class on 1.9, refactor Unicode.

Makes String#mb_chars on Ruby 1.9 return an instance of ActiveSupport::Multibyte::Chars to work around 1.9's lack of Unicode case folding.

Refactors class methods from ActiveSupport::Multibyte::Chars into new Unicode module, adding other related functionality for consistency.

[#4594 state:resolved]

Signed-off-by: Jeremy Kemper <jeremy@bitsweat.net>

1 files changed, 3 insertions, 5 deletions

diff --git a/activesupport/test/core_ext/string_ext_test.rb b/activesupport/test/core_ext/string_ext_test.rb
index ea21e445e2..759b0ddcd6 100644
--- a/activesupport/test/core_ext/string_ext_test.rb
+++ b/activesupport/test/core_ext/string_ext_test.rb
@@ -245,11 +245,9 @@ class CoreExtStringMultibyteTest < ActiveSupport::TestCase
         assert_kind_of ActiveSupport::Multibyte.proxy_class, UNICODE_STRING.mb_chars
       end
     end
-  end
-
-  if RUBY_VERSION >= '1.9'
-    def test_mb_chars_returns_string
-      assert_kind_of String, UNICODE_STRING.mb_chars
+  else
+    def test_mb_chars_returns_instance_of_proxy_class
+      assert_kind_of ActiveSupport::Multibyte.proxy_class, UNICODE_STRING.mb_chars
     end
   end
 end