def test_zipped_list():
ll1 = LinkedList(Node('1', Node('3', Node('5'))))
ll2 = LinkedList(Node('2', Node('4', Node('6'))))
zipped_list(ll1, ll2)
actual = ll1.__str__()
expected = "{'1'} ->{'2'} ->{'3'} ->{'4'} ->{'5'} ->{'6'} -> None "
assert actual == expected
def test_insert():
list = LinkedList(Node("Buddy"))
assert list.head.data == "Buddy"
list.insert('Guy')
list.insert('Friend')
assert list.head.data == 'Friend'
def test_head():
node = Node('rubber')
actual = node.next
expected = None
assert actual == expected
def test_if_list_includes_two():
node = Node(50)
actual = LinkedList(node).includes(49)
expected = False
assert actual == expected
def test_list_head():
node = Node(45)
actual = LinkedList(node).head
expected = node
assert actual == expected
def test_list_includes_one():
node = Node(100)
actual = LinkedList(node).includes(100)
expected = True
assert actual == expected
def node():
return Node("some value")
def test_first_node():
node = Node()
actual = node.next
expect = None
assert actual == expect
def test_nine():
ll = LinkedList(Node(1, Node(2, Node(3, Node(4, Node(5))))))
actual = ll.kthFromEnd(5)
expected = 'Same length'
assert actual == expected
def test_eight():
ll = LinkedList(Node(1, Node(2, Node(3, Node(4, Node(5))))))
actual = ll.kthFromEnd(0)
expected = 5
assert actual == expected
def test_a():
node1 = Node("apple")
actual = node1.value
expected = "apple"
assert actual == expected
assert node1.next == None
def test_three():
node1 = Node("a")
ll1 = LinkedList(node1)
actual = ll1.head.value
expected = "a"
assert actual == expected
def test_twelve():
ll = LinkedList(Node(1, Node(2, Node(3, Node(4, Node(5))))))
actual = ll.kthFromEnd(3)
expected = 2
assert actual == expected
def test_eleven():
ll = LinkedList(Node(1))
actual = ll.kthFromEnd(0)
expected = 1
assert actual == expected
def test_ten():
ll = LinkedList(Node(1, Node(2, Node(3, Node(4, Node(5))))))
actual = ll.kthFromEnd(-1)
expected = 'Negative numbers not allowed'
assert actual == expected