From ce1a4ee112f3796381cc7fc24ac4e7d145f9409a Mon Sep 17 00:00:00 2001
From: yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 21 May 2009 14:48:03 +0000
Subject: merges r23424 from trunk into ruby_1_9_1. -- *
 ext/stringio/stringio.c (strio_ungetbyte): encoding should not   be
 effective.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@23520 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/test_io.rb | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'test/ruby')

diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index 9082b76b61..776cf34147 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -77,6 +77,22 @@ class TestIO < Test::Unit::TestCase
     r.close
   end
 
+  def test_ungetbyte
+    t = make_tempfile
+    t.open
+    t.ungetbyte(0x41)
+    assert_equal(0x41, t.getbyte)
+    t.rewind
+    t.ungetbyte("qux")
+    assert_equal("quxfoo\n", t.gets)
+    t.set_encoding("utf-8")
+    t.ungetbyte(0x89)
+    t.ungetbyte(0x8e)
+    t.ungetbyte("\xe7")
+    t.ungetbyte("\xe7\xb4\x85")
+    assert_equal("\u7d05\u7389bar\n", t.gets)
+  end
+
   def test_each_byte
     r, w = IO.pipe
     w << "abc def"
-- 
cgit v1.2.3