add try/finally block for always clean up resources

tests/test_keep_alive_timeout.py

@@ -241,6 +241,7 @@ def test_keep_alive_timeout_reuse():
     """If the server keep-alive timeout and client keep-alive timeout are
      both longer than the delay, the client _and_ server will successfully
      reuse the existing connection."""
+    try:
         loop = asyncio.new_event_loop()
         asyncio.set_event_loop(loop)
         client = ReuseableSanicTestClient(keep_alive_timeout_app_reuse, loop)
@@ -252,12 +253,14 @@ def test_keep_alive_timeout_reuse():
         request, response = client.get("/1")
         assert response.status == 200
         assert response.text == "OK"
+    finally:
         client.kill_server()
 
 
 def test_keep_alive_client_timeout():
     """If the server keep-alive timeout is longer than the client
     keep-alive timeout, client will try to create a new connection here."""
+    try:
         loop = asyncio.new_event_loop()
         asyncio.set_event_loop(loop)
         client = ReuseableSanicTestClient(keep_alive_app_client_timeout, loop)
@@ -276,6 +279,7 @@ def test_keep_alive_client_timeout():
         assert exception is not None
         assert isinstance(exception, ValueError)
         assert "got a new connection" in exception.args[0]
+    finally:
         client.kill_server()
 
 
@@ -284,6 +288,7 @@ def test_keep_alive_server_timeout():
     keep-alive timeout, the client will either a 'Connection reset' error
     _or_ a new connection. Depending on how the event-loop handles the
     broken server connection."""
+    try:
         loop = asyncio.new_event_loop()
         asyncio.set_event_loop(loop)
         client = ReuseableSanicTestClient(keep_alive_app_server_timeout, loop)
@@ -305,4 +310,5 @@ def test_keep_alive_server_timeout():
             "Connection reset" in exception.args[0]
             or "got a new connection" in exception.args[0]
         )
+    finally:
         client.kill_server()