def METHOD_NAME(self):
    x = np.array([1])
    y = np.array([2])
    I0_sersic = 1
    R_sersic = 1
    n_sersic = 1
    phi_G = 1
    q = 0.9
    e1, e2 = param_util.phi_q2_ellipticity(phi_G, q)
    center_x = 0
    center_y = 0
    values = self.sersic_elliptic.function(
        x, y, I0_sersic, R_sersic, n_sersic, e1, e2, center_x, center_y
    )
    values_qphi = self.sersic_elliptic_qphi.function(
        x, y, I0_sersic, R_sersic, n_sersic, q, phi_G, center_x, center_y
    )
    npt.assert_almost_equal(values, values_qphi, decimal=6)