Issue #20682: test_asyncio, _basetest_create_connection() checks also the
sockname, as _basetest_create_ssl_connection().
diff --git a/Lib/test/test_asyncio/test_events.py b/Lib/test/test_asyncio/test_events.py
index a0a4d02..15cc520 100644
--- a/Lib/test/test_asyncio/test_events.py
+++ b/Lib/test/test_asyncio/test_events.py
@@ -503,6 +503,7 @@
         tr, pr = self.loop.run_until_complete(connection_fut)
         self.assertIsInstance(tr, asyncio.Transport)
         self.assertIsInstance(pr, asyncio.Protocol)
+        self.assertIsNotNone(tr.get_extra_info('sockname'))
         self.loop.run_until_complete(pr.done)
         self.assertGreater(pr.nbytes, 0)
         tr.close()