def test_enqueue_one_element(self):
     queue = Queue(3)
     self.assertEqual(queue.enqueue(15), "success")
 def test_enqueue_full(self):
     queue = Queue(3)
     queue.enqueue(12)
     queue.enqueue(13)
     queue.enqueue(14)
     self.assertEqual(queue.enqueue(15), "queue full")