def METHOD_NAME(self):
    """
    Test :func:`colour.colorimetry.uniformity.spectral_uniformity`
    definition.
    """
    from colour.quality.datasets import SDS_TCS
    np.testing.assert_array_almost_equal(
        spectral_uniformity(SDS_TCS.values()),
        DATA_UNIFORMITY_FIRST_ORDER_DERIVATIVES,
        decimal=7,
    )
    np.testing.assert_array_almost_equal(
        spectral_uniformity(
            SDS_TCS.values(), use_second_order_derivatives=True
        ),
        DATA_UNIFORMITY_SECOND_ORDER_DERIVATIVES,
        decimal=7,
    )