boolean result = service.visited(newUrl);

        // Verify
        assertFalse(result);
    }

    public void test_saveSession() {
        // Execute - should be a no-op
        service.saveSession("session123");

        // No verification needed as it's a no-op method
    }

    public void test_generateUrlQueues() {
        // Setup
        String previousSessionId = "prevSession";

    }

    /**
     * Saves the session state (currently not implemented).
     *
     * @param sessionId The session ID.
     */
    @Override
    public void saveSession(final String sessionId) {
        // TODO use cache
    }

    /**
     * Checks if a URL has been visited by looking in both the queue and access results.
     *