add set of unit tests

the_app/api/stuff.py

@@ -1,6 +1,6 @@
 from uuid import UUID
 
-from fastapi import APIRouter, Depends
+from fastapi import APIRouter, Depends, status
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from the_app.database import get_db
@@ -10,7 +10,7 @@ from the_app.schemas.stuff import StuffResponse, StuffSchema
 router = APIRouter()
 
 
-@router.post("/", response_model=StuffResponse)
+@router.post("/", status_code=status.HTTP_201_CREATED)
 async def create_stuff(stuff: StuffSchema, db_session: AsyncSession = Depends(get_db)):
     stuff_id = await Stuff.create(db_session, stuff)
     return {**stuff.dict(), "id": stuff_id}