increase test coverage

app/tests/test_mqtt.py

@@ -190,10 +190,6 @@ async def test_mqtt_except_no_config(config_no_conn, monkeypatch, caplog):
 
     assert asyncio.get_running_loop()
 
-    on_connect =  asyncio.Event()
-    async def cb():
-        on_connect.set()
-
     async def my_aenter(self):
         raise MqttError('TestException') from None
     
@@ -204,10 +200,9 @@ async def test_mqtt_except_no_config(config_no_conn, monkeypatch, caplog):
     LOGGER.setLevel(logging.INFO)
 
     with caplog.at_level(logging.INFO):
-        m = Mqtt(cb)
+        m = Mqtt(None)
         assert m.task
         await asyncio.sleep(0)
-        assert not on_connect.is_set()
         try:
             await m.publish('homeassistant/status', 'online')
             assert False
@@ -225,10 +220,6 @@ async def test_mqtt_except_def_config(config_def_conn, monkeypatch, caplog):
 
     assert asyncio.get_running_loop()
 
-    on_connect =  asyncio.Event()
-    async def cb():
-        on_connect.set()
-
     async def my_aenter(self):
         raise MqttError('TestException') from None
     
@@ -239,10 +230,9 @@ async def test_mqtt_except_def_config(config_def_conn, monkeypatch, caplog):
     LOGGER.setLevel(logging.INFO)
 
     with caplog.at_level(logging.INFO):
-        m = Mqtt(cb)
+        m = Mqtt(None)
         assert m.task
         await asyncio.sleep(0)
-        assert not on_connect.is_set()
         try:
             await m.publish('homeassistant/status', 'online')
             assert False