def test_zipLists(self, list1, list2):
list1 = LinkedList()
list2 = LinkedList()
list1.append(1)
list1.append(2)
list2.append(3)
list2.append(4)
zipLists(list1, list2)
assert zipLists.value == 1
assert zipLists.next.value == 3
assert zipLists.next.next.value == 2
assert zipLists.next.next.next.value == 4
def test_zip_edge_two(long_list, list_two):
"""
tests zip function when list two is longer than list one.
"""
returned = zipLists(list_two, long_list)
result = returned.__str__()
assert result == 'b -> a -> d -> c -> f -> e -> h -> g -> i'
def test_base_zip(list_one, list_two):
"""
tests zip function with no edge cases.
"""
returned = zipLists(list_one, list_two)
result = returned.__str__()
assert result == 'a -> b -> c -> d -> e -> f -> g -> h'
def test_zip_lists_same_length():
first_list = LinkedList([5, 6, 7, 8, 9, 10, 11])
second_list = LinkedList([12, 13, 14, 15, 16, 17, 18])
new_head = zipLists(first_list, second_list)
assert str(
first_list
) == '5 ->12 ->6 ->13 ->7 ->14 ->8 ->15 ->9 ->16 ->10 ->17 ->11 ->18'
def test_zip_lists_normal():
zipped_list = zipLists(llist_a, llist_b)
actual = str(zipped_list)
expected = '{213} -> {45} -> {454} -> {918} -> {981} -> {203} -> {123} -> {978} -> {415} -> {253} -> {98} -> {455} -> {23} -> {198} -> NULL'
assert actual == expected
def test_zip_lists_empty():
first_list = LinkedList()
second_list = LinkedList([12, 13, 14])
new_head = zipLists(first_list, second_list)
assert new_head.value == 12
def test_zip_lists_bad_input():
with pytest.raises(TypeError):
headless = zipLists('potato', 5)
def test_zip_lists_longer_second():
first_list = LinkedList([5, 6, 7])
second_list = LinkedList([12, 13, 14, 15, 16])
new_head = zipLists(first_list, second_list)
assert str(first_list) == '5 ->12 ->6 ->13 ->7 ->14 ->15 ->16'
def test_zip_lists_longer_first():
first_list = LinkedList([5, 6, 7, 8, 9])
second_list = LinkedList([12, 13, 14])
new_head = zipLists(first_list, second_list)
assert str(first_list) == '5 ->12 ->6 ->13 ->7 ->14 ->8 ->9'