def METHOD_NAME(self):
    for n in 1, 2, 3:
        with self.subTest(n=n):
            points, weights = self.ref.getischeme('vertex{}'.format(n))
            for (ctrans, cref), vals in zip(self.ref.children, self.ref.child_divide(points, n)):
                if cref:
                    cpoints, cweights = cref.getischeme('vertex{}'.format(n-1))
                    self.assertAllEqual(ctrans.apply(cpoints), vals)