Implement PEP 393.
diff --git a/Lib/test/test_codecs.py b/Lib/test/test_codecs.py
index 7a9e38c..17038cb 100644
--- a/Lib/test/test_codecs.py
+++ b/Lib/test/test_codecs.py
@@ -622,6 +622,10 @@
b"abc\xed\xa0\x80def")
self.assertEqual(b"abc\xed\xa0\x80def".decode("utf-8", "surrogatepass"),
"abc\ud800def")
+ self.assertEqual("\U00010fff\uD800".encode("utf-8", "surrogatepass"),
+ b"\xf0\x90\xbf\xbf\xed\xa0\x80")
+ self.assertEqual(b"\xf0\x90\xbf\xbf\xed\xa0\x80".decode("utf-8", "surrogatepass"),
+ "\U00010fff\uD800")
self.assertTrue(codecs.lookup_error("surrogatepass"))
class UTF7Test(ReadTest):