import pytest
from unittest.mock import MagicMock


@pytest.fixture
def mock_sf():
    sf = MagicMock()
    mock_cur = MagicMock()
    mock_cur.fetchall.return_value = []
    mock_cur.fetchone.return_value = None
    mock_cur.description = []
    sf.cursor.return_value = mock_cur
    return sf