1 files changed, 22 insertions, 0 deletions
diff --git a/test/ruby/test_io_m17n.rb b/test/ruby/test_io_m17n.rb
new file mode 100644
index 0000000000..43f3c3ce01
--- /dev/null
+++ b/test/ruby/test_io_m17n.rb
@@ -0,0 +1,22 @@
+require 'test/unit'
+require 'tmpdir'
+
+class TestIOM17N < Test::Unit::TestCase
+  def with_tmpdir
+    Dir.mktmpdir {|dir|
+      Dir.chdir dir
+      yield dir
+    }
+  end
+
+  def test_conversion
+    with_tmpdir {
+      open("tmp", "w") {|f| f.write "before \u00FF after" }
+      s = open("tmp", "r:iso-8859-1:utf-8") {|f|
+        f.gets("\xFF".force_encoding("iso-8859-1"))
+      }
+      assert_equal("before \xFF".force_encoding("iso-8859-1"), s, '[ruby-core:14288]')
+    }
+  end
+end
+