def test_empty_results(method_under_test, query_string):
    """Test with an empty dataframe.

    See: https://github.com/pydata/pandas-gbq/issues/299
    """
    df = method_under_test(
        query_string,
        use_bqstorage_api=True,
    )
    assert len(df.index) == 0
Test with an empty dataframe.

    See: https://github.com/pydata/pandas-gbq/issues/299
    
tests/system/test_read_gbq_with_bqstorage.py