routers/ai/tests/conftest.py

import pytest
from app.crud import CRUD

@pytest.fixture
def mock_crud(monkeypatch):
    def mock_create_engine(*args, **kwargs):
        return 'mock_engine'

    monkeypatch.setattr('sqlalchemy.create_engine', mock_create_engine)
    return CRUD('postgresql://user:password@localhost/dbname')