def test_walk(self):
'''Test the method walk of ConstVectBase.
'''
j = 10
c1 = ConstVectValued(j, [SMFC([5, 5])], 0, None)
c2 = ConstDivision([c1], [1], SMFC([10]), 1)
c3 = ConstVectValuedHeckeOp(c2, 2)
c4 = ConstDivision([c1], [1], SMFC([12]), 1)
c5 = ConstDivision([c3, c4], [1, -1], SMFC([10]), 1)
self.assertEqual(list(c1.walk()), [c1])
self.assertEqual(list(c2.walk()), [c1, c2])
self.assertEqual(list(c3.walk()), [c1, c2, c3])
self.assertEqual(list(c4.walk()), [c1, c4])
self.assertEqual(list(c5.walk()), [c1, c2, c3, c1, c4, c5])
