test that keyfile can be None

diff --git a/Lib/test/test_ssl.py b/Lib/test/test_ssl.py
index f95d3e52a255c5116337dd0615b9ca17ac558d22..7f1f40504471325fadf5b5554c33161087b6fdf7 100644 (file)
--- a/Lib/test/test_ssl.py
+++ b/Lib/test/test_ssl.py
@@ -727,7 +727,7 @@ class ContextTests(unittest.TestCase):
     def test_load_cert_chain(self):
         ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1)
         # Combined key and cert in a single file
-        ctx.load_cert_chain(CERTFILE)
+        ctx.load_cert_chain(CERTFILE, keyfile=None)
         ctx.load_cert_chain(CERTFILE, keyfile=CERTFILE)
         self.assertRaises(TypeError, ctx.load_cert_chain, keyfile=CERTFILE)
         with self.assertRaises(OSError) as cm: