1 files changed, 11 insertions, 0 deletions
diff --git a/test/ruby/test_transcode.rb b/test/ruby/test_transcode.rb
index 25c9d24663..74190daba7 100644
--- a/test/ruby/test_transcode.rb
+++ b/test/ruby/test_transcode.rb
@@ -2080,4 +2080,15 @@ class TestTranscode < Test::Unit::TestCase
       assert_equal "\ufffd", str.encode(invalid: :replace), bug8995
     end
   end
+
+  def test_valid_dummy_encoding
+    bug9314 = '[ruby-core:59354] [Bug #9314]'
+    assert_separately(%W[- -- #{bug9314}], <<-'end;')
+    bug = ARGV.shift
+    result = assert_nothing_raised(TypeError) {break "test".encode(Encoding::UTF_16)}
+    assert_equal("\xFE\xFF\x00t\x00e\x00s\x00t", result.b)
+    result = assert_nothing_raised(TypeError) {break "test".encode(Encoding::UTF_32)}
+    assert_equal("\x00\x00\xFE\xFF\x00\x00\x00t\x00\x00\x00e\x00\x00\x00s\x00\x00\x00t", result.b)
+    end;
+  end
 end