mock InventoryTask.update_status

update_status uses result backend, which seems very hard to mock

test/per_router/test_celery_worker.py

@@ -133,9 +133,11 @@ def test_reload_router_config(mocked_worker_module, router, mocker):
         'inventory_provider.tasks.worker.snmp_refresh_interfaces.apply',
         _mocked_snmp_refresh_interfaces_apply)
 
+    def _mocked_update_status(self, **kwargs):
+        pass
     mocker.patch(
-        'inventory_provider.tasks.worker.snmp_refresh_interfaces.apply',
-        _mocked_snmp_refresh_interfaces_apply)
+        'inventory_provider.tasks.worker.InventoryTask.update_state',
+        _mocked_update_status)
 
     worker.reload_router_config(router)
     assert 'netconf:' + router in MockedRedis.db