def test_sum(self):
one = LinkedList(1)
four = LinkedList(4)
five = one.sum(four)
self.assertListEqual(five.getList(), [5])
num318 = LinkedList(8)
num318.listBuilder([1, 3])
num1094 = LinkedList(4)
num1094.listBuilder([9, 0, 1])
sum = num1094.sum(num318)
self.assertListEqual(sum.getList(), [2, 1, 4, 1])
