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31 lines
635 B
Python

import pytest
from solution import ListNode, Solution
def build(vals):
head = None
for v in reversed(vals):
head = ListNode(v, head)
return head
def to_list(node):
out = []
while node:
out.append(node.val)
node = node.next
return out
@pytest.mark.parametrize(
"l1,l2,expected",
[
([2, 4, 3], [5, 6, 4], [7, 0, 8]),
([0], [0], [0]),
([9, 9, 9, 9, 9, 9, 9], [9, 9, 9, 9], [8, 9, 9, 9, 0, 0, 0, 1]),
],
)
def test_add_two_numbers(l1, l2, expected):
result = Solution().addTwoNumbers(build(l1), build(l2))
assert to_list(result) == expected