def test_search_for_item(self):
linked_list = LinkedList("Bob")
linked_list.insert_at_tail("Kim")
linked_list.insert_at_tail("Jim")
linked_list.insert_at_tail("Max")
result = linked_list.search_for_item("Max")
self.assertEqual(result, (3, "Max"))
empty_result = linked_list.search_for_item("Adrian")
self.assertIsNone(empty_result)
