def test5(self):
lst = LinkedList(1, 2, 3, 4, 5)
n = lst.get_node(3)
lst.get_node(5).next = n
self.assertEqual(is_circular(lst), True)
lst1 = LinkedList(1, 2, 3, 4)
self.assertEqual(is_circular(lst1), False)
def test3(self):
lst = LinkedList(1, 1, 3, 1, 1)
n = lst.get_node(3)
remove_node_from_middle(n)
required = LinkedList(1, 1, 1, 1)
self.assertEqual(lst, required)