class LinkedListTest(unittest.TestCase):
def setUp(self) -> None:
self.linkedlist = LinkedList()
node1 = Node()
node2 = Node()
node1.next = node2
node3 = Node()
node2.next = node3
self.linkedlist.head = node1
def tearDowm(self) -> None:
pass
def test_linkedlist_length(self):
self.assertEqual(3, self.linkedlist.len())
def test_insert_at_begining(self):
node_begining = Node
self.linkedlist.insert_at_begining(node_begining)
self.assertEqual(4, self.linkedlist.len())
def test_insert_at_end(self):
node_end = Node()
self.linkedlist.insert_at_end(node_end)
self.assertEqual(4, self.linkedlist.len())
def test_insert_at_position(self):
node_pos = Node()
self.linkedlist.insert_at_position(0, node_pos)
self.assertEqual(4, self.linkedlist.len())
node1 = Node()
node1.data = 1
node2 = Node()
node2.data = 2
node1.next = node2
node3 = Node()
node3.data = 3
node2.next = node3
llst.head = node1
#inserting the value at the begining.
node = Node()
node.data = 0
llst.insert_at_begining(node)
#inserting the value at the end
node4 = Node()
node4.data = 4
llst.insert_at_end(node4)
#insert value at given position
node23 = Node()
node23.data = 23
llst.insert_at_position(0, node23)
print(llst.len())