fix(tests): fixed test runtime errors regarding database connection

.github/workflows/run-tests.yml

@@ -33,6 +33,7 @@ jobs:
       MARIADB_PASSWORD: apppass
       # Ensure the application uses MariaDB (async) during tests
       DATABASE_URL: mysql+asyncmy://appuser:apppass@127.0.0.1:3306/group_project
+      DISABLE_METRICS: "1"
 
     steps:
       - name: Check out repository code

7project/backend/app/app.py

@@ -59,11 +59,10 @@ fastApi.add_middleware(
     allow_headers=["*"],
 )
 
+if os.getenv("DISABLE_METRICS") != "1":
     prometheus = Instrumentator().instrument(fastApi)
-
     # Register custom metrics
     prometheus.add(number_of_users()).add(number_of_transactions())
-
     prometheus.expose(
         fastApi,
         endpoint="/metrics",