def METHOD_NAME(self):
    from pyscf.pbc.df.aft import AFTDF
    mf = pbcdft.RKS(cell)
    mf.with_df = AFTDF(cell)
    mf.xc = 'camb3lyp'
    mf.kernel()
    self.assertAlmostEqual(mf.e_tot, -2.4745140705800446, 7)