Fix test infra (#3337)

Author: zhangyunhao116

CHANGES/3337.bugfix

@@ -0,0 +1 @@
+Fix tests/test_connector.py typo and tests/autobahn/server.py duplicate loop def.

tests/autobahn/server.py

@@ -50,8 +50,6 @@ async def finish(app, srv, handler):
     loop = asyncio.get_event_loop()
     logging.basicConfig(level=logging.DEBUG,
                         format='%(asctime)s %(levelname)s %(message)s')
-
-    loop = asyncio.get_event_loop()
     app, srv, handler = loop.run_until_complete(main(loop))
     try:
         loop.run_forever()

tests/test_connector.py

@@ -209,7 +209,7 @@ def test_del_with_closed_loop(loop) -> None:
     assert exc_handler.called
 
 
-def test_del_empty_conector(loop) -> None:
+def test_del_empty_connector(loop) -> None:
     conn = aiohttp.BaseConnector(loop=loop)
 
     exc_handler = mock.Mock()