[FIX] correct lifespan

Author: nolan1999

api/main.py

@@ -33,7 +33,7 @@ async def cron_backup_database(db: Database) -> None:
 
 @asynccontextmanager
 async def lifespan(app: FastAPI) -> AsyncGenerator[None, None]:
-    db = app.dependency_overrides.get(dependencies.db_dep, dependencies.db_dep)()
+    db = await app.dependency_overrides.get(dependencies.db_dep, dependencies.db_dep)()
     assert isinstance(db, Database)
     db.create()
     task_backup = asyncio.create_task(cron_backup_database(db))

tests/integration/conftest.py

@@ -133,10 +133,13 @@ def override_db_dep(
     rds_testing_instance: RDSTestingInstance,
     monkeypatch: pytest.MonkeyPatch,
 ) -> Generator[None, None, None]:
+    async def _override_db() -> Database:
+        return db
+
     monkeypatch.setitem(
         app.dependency_overrides,  # type: ignore
         db_dep,
-        lambda: db,
+        _override_db,
     )
     yield
     # Cleanup after every test