From 030d9e240c8cc42d170d0290bb3a478072b9f6b5 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 14 Sep 2008 17:37:35 +0000
Subject: * transcode.c (str_encode): returns duplicated string if nothing  
 changed.  [ruby-core:18578]

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@19349 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/test_transcode.rb | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'test')

diff --git a/test/ruby/test_transcode.rb b/test/ruby/test_transcode.rb
index 5abeed88e..8770328bc 100644
--- a/test/ruby/test_transcode.rb
+++ b/test/ruby/test_transcode.rb
@@ -582,4 +582,10 @@ class TestTranscode < Test::Unit::TestCase
     assert_raise(Encoding::ConversionUndefined) { "\u203E".encode("CP51932") }
   end
 
+  def test_nothing_changed
+    a = "James".force_encoding("US-ASCII")
+    b = a.encode("Shift_JIS")
+    assert_equal(Encoding::US_ASCII, a.encoding)
+    assert_equal(Encoding::Shift_JIS, b.encoding)
+  end
 end
-- 
cgit