test_gbq.py 文件源码

def test_should_properly_handle_null_timestamp(self):
        query = 'SELECT TIMESTAMP(NULL) AS null_timestamp'
        df = gbq.read_gbq(query, project_id=_get_project_id(),
                          private_key=_get_private_key_path())
        tm.assert_frame_equal(df, DataFrame({'null_timestamp': [NaT]}))