fixed import/initialize issues

Author: Andrei Neagu

services/dynamic-scheduler/tests/conftest.py

@@ -6,6 +6,7 @@
 from pathlib import Path
 from typing import Final
 
+import nicegui
 import pytest
 import simcore_service_dynamic_scheduler
 import yaml
@@ -124,6 +125,9 @@ def disable_status_monitor_lifespan(mocker: MockerFixture) -> None:
 async def app(
     app_environment: EnvVarsDict, is_pdb_enabled: bool
 ) -> AsyncIterator[FastAPI]:
+    # forces rebuild of middleware stack on next test
+    nicegui.app.user_middleware.clear()
+    nicegui.app.middleware_stack = None
     test_app = create_app()
     async with LifespanManager(
         test_app,