* transcode.c (econv_primitive_putback): new method.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@18671 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 12 insertions, 0 deletions

diff --git a/test/ruby/test_econv.rb b/test/ruby/test_econv.rb
index 1f15a759a0..9ba5fcab29 100644
--- a/test/ruby/test_econv.rb
+++ b/test/ruby/test_econv.rb
@@ -415,4 +415,16 @@ class TestEncodingConverter < Test::Unit::TestCase
     assert_equal("\u{3042}", err.error_char)
   end
 
+  def test_putback
+    ec = Encoding::Converter.new("EUC-JP", "ISO-8859-1")
+    ret = ec.primitive_convert(src="abc\xa1def", dst="", nil, 10)
+    assert_equal(:invalid_byte_sequence, ret)
+    assert_equal(["abc", "ef"], [dst, src])
+    src = ec.primitive_putback(nil) + src
+    assert_equal(["abc", "def"], [dst, src])
+    ret = ec.primitive_convert(src, dst, nil, 10)
+    assert_equal(:finished, ret)
+    assert_equal(["abcdef", ""], [dst, src])
+  end
+
 end