def test_linked_list_kth_negative_int():
ll = LinkedList()
ll.append(1)
ll.append(3)
ll.append(8)
ll.append(2)
with pytest.raises(Exception):
ll.kthFromEnd(-4)
def test_linked_list_kth_equal_length():
ll = LinkedList()
ll.append(1)
ll.append(3)
ll.append(8)
ll.append(2)
with pytest.raises(Exception):
ll.kthFromEnd(4)
def test_linked_list_kth_greater_than():
ll = LinkedList()
ll.append(1)
ll.append(3)
ll.append(8)
ll.append(2)
with pytest.raises(Exception):
ll.kthFromEnd(6)
def test_linked_list_kth_middle():
ll = LinkedList()
ll.append(1)
ll.append(3)
ll.append(8)
ll.append(2)
actual = ll.kthFromEnd(2)
expected = 3
assert actual == expected
def test_linked_list_kth_size_one_pass():
ll = LinkedList()
ll.append(1)
actual = ll.kthFromEnd(0)
expected = 1
assert actual == expected
def test_linked_list_kth_size_one_fail():
ll = LinkedList()
ll.append(1)
with pytest.raises(Exception):
ll.kthFromEnd(1)
