@patch(sql)
def test_user_demo_test(mock_sql):
    mock_sql.return_value = pandas.DataFrame(data={'x': [1, 2], 'y': ['3', '4']})
    assert (my_wf().open().all() == pandas.DataFrame(data={'x': [1, 2], 'y': ['3', '4']})).all().all()
@patch(sql)
def test_user_demo_test(mock_sql):
    mock_sql.return_value = pandas.DataFrame(data={'x': [1, 2], 'y': ['3', '4']})
    assert (my_wf().open().all() == pandas.DataFrame(data={'x': [1, 2], 'y': ['3', '4']})).all().all()