Issue #13635: Add ssl.OP_CIPHER_SERVER_PREFERENCE, so that SSL servers
choose the cipher based on their own preferences, rather than on the
client's.
diff --git a/Lib/test/test_ssl.py b/Lib/test/test_ssl.py
index a2b4040..288b714 100644
--- a/Lib/test/test_ssl.py
+++ b/Lib/test/test_ssl.py
@@ -98,6 +98,7 @@
         ssl.CERT_NONE
         ssl.CERT_OPTIONAL
         ssl.CERT_REQUIRED
+        ssl.OP_CIPHER_SERVER_PREFERENCE
         self.assertIn(ssl.HAS_SNI, {True, False})
 
     def test_random(self):