def test_where_k_and_the_length_of_the_list_are_the_same():
x = LinkedList()
x.insert("a")
x.insert("b")
x.insert("c")
x.insert("d")
x.insert("e")
actual = x.kth_from_end(5)
expected = "k is greater than length of linked list"
assert actual == expected
def test_where_k_is_not_a_positive_integer():
x = LinkedList()
x.insert("a")
x.insert("b")
x.insert("c")
x.insert("d")
x.insert("e")
actual = x.kth_from_end(-3)
expected = "you must enter a positive value"
assert actual == expected
def test_kth_from_end_returns_correct_node_value():
x = LinkedList()
x.insert("a")
x.insert("b")
x.insert("c")
x.insert("d")
x.insert("e")
actual = x.kth_from_end(2)
expected = "c"
assert actual == expected
def test_where_the_linked_list_is_of_a_size_1():
x = LinkedList()
x.insert("a")
actual = x.kth_from_end(0)
expected = "a"
assert actual == expected