def test_with_invalid_sorting_order(self):
    with self.assertRaises(ValueError):
        np_box_list_ops.sort_by_field(self.boxlist, 'scores', 'Descending')
def test_with_invalid_sorting_order(self):
    with self.assertRaises(ValueError):
        np_box_list_ops.sort_by_field(self.boxlist, 'scores', 'Descending')