Improve assign_accessauth test and change already assigned to 409

app/controllers/aaManager.py

@@ -1,4 +1,4 @@
-from fastapi import APIRouter, Depends, HTTPException
+from fastapi import APIRouter, Depends, HTTPException, status
 from sqlmodel import Session, select
 from sqlalchemy.orm import selectinload
 from typing import List
@@ -44,7 +44,7 @@ def assign_accessauth(*, db: Session = Depends(get_session), group_id: int, aa_i
     if db_aa is None:
         raise HTTPException(status_code=404, detail="AA not found")
     if db_aa in db_group.accessauths:
-        raise HTTPException(status_code=200, detail="AA already assigned to group")
+        raise HTTPException(status_code=status.HTTP_409_CONFLICT, detail="AA already assigned to group")
     db_group.accessauths.append(db_aa)
     return add_and_refresh(db, db_group)