def METHOD_NAME(self):
    """
    Test :func:`colour.models.ragoo2021.IPT_Ragoo2021_to_XYZ` definition.
    """
    np.testing.assert_array_almost_equal(
        IPT_Ragoo2021_to_XYZ(
            np.array([0.42248243, 0.29105140, 0.20410663])
        ),
        np.array([0.20654008, 0.12197225, 0.05136952]),
        decimal=7,
    )
    np.testing.assert_array_almost_equal(
        IPT_Ragoo2021_to_XYZ(
            np.array([0.54745257, -0.22795249, 0.10109646])
        ),
        np.array([0.14222010, 0.23042768, 0.10495772]),
        decimal=7,
    )
    np.testing.assert_array_almost_equal(
        IPT_Ragoo2021_to_XYZ(
            np.array([0.32151337, 0.06071424, -0.27388774])
        ),
        np.array([0.07818780, 0.06157201, 0.28099326]),
        decimal=7,
    )