def test_search_works_with_zero_to_multiple(self):
ul = UnorderedList()
self.assertEqual(ul.search('first'), None)
first_node = Node('first')
ul.add(first_node)
self.assertEqual(ul.search('first'), first_node)
second_first = Node('first')
ul.add(second_first)
self.assertEqual(ul.search('first'), second_first)
