def test_push_first_a_few_elements(self): l = DoubleLinkedList() l.push_first(1) l.push_first(2) l.push_first(3) self.assertEqual(list(l), [3, 2, 1])
def test_push_first_one_element(self): l = DoubleLinkedList() l.push_first(1) self.assertEqual(list(l), [1])