def test_U(self): l = DLlist() l.push_front('A') l.push_front('B') l.push_front('C') l.push_front('D') self.assertTrue(len(l) == 4 and l[-1] == 'A' and l[-2] == 'B' and l[-3] == 'C' and l[-4] == 'D')
def test_T(self): l = DLlist() l.push_front('A') l.push_front('B') l.push_front('C') l.push_front('D') self.assertTrue(len(l) == 4 and l[0] == 'D' and l[1] == 'C' and l[2] == 'B' and l[3] == 'A')