verify(dataHelper).getUrlQueueList(oldSessionId);
        verify(dataHelper).addUrlQueueList(newSessionId, mockQueue);
        verify(dataHelper).removeUrlQueueList(oldSessionId);
    }

    public void test_poll() {
        // Setup
        String sessionId = "session123";
        UrlQueueImpl<Long> urlQueue = new UrlQueueImpl<>();
        urlQueue.setUrl("https://example.com");