def METHOD_NAME(self):
    mf = dft.RKS(h2o)
    mf.grids.prune = None
    mf.run(conv_tol=1e-14, xc='b3lypg')
    g = rks.Grad(mf)
    self.assertAlmostEqual(fp(g.grad()), 0.066541921001296467, 6)
    g.grid_response = True
    self.assertAlmostEqual(fp(g.grad()), 0.066543737224608879, 6)