def test_remove_last(self):
n = Node(1)
ll = Linkedlist()
self.assertEqual(ll.remove_last(), None)
ll.insert_last(n)
self.assertEqual(ll.remove_last(), n)
self.assertEqual(ll.size, 0)
n = Node(2)
ll.insert_last(n)
n = Node(3)
ll.insert_last(n)
self.assertEqual(ll.remove_last(), n)
def test_get_last(self):
n = Node(1)
ll = Linkedlist()
self.assertEqual(ll.get_last(), None)
ll.insert_last(n)
self.assertEqual(ll.get_last(), n)