def METHOD_NAME(self, chart_command):
    expected = pd.DataFrame(
        {
            "index--p5bJXXpQgvPz6yvQMFiy": [1, 2, 3, 1, 2, 3, 1, 2, 3],
            "color--p5bJXXpQgvPz6yvQMFiy": [
                "a",
                "a",
                "a",
                "b",
                "b",
                "b",
                "c",
                "c",
                "c",
            ],
            "value--p5bJXXpQgvPz6yvQMFiy": [11, 12, 13, 21, 22, 23, 31, 32, 33],
        }
    )
    element = chart_command(DATAFRAME)
    element._arrow_add_rows(NEW_ROWS)
    proto = bytes_to_data_frame(
        self.get_delta_from_queue().arrow_add_rows.data.data
    )
    pd.testing.assert_frame_equal(proto, expected)