public void test_setCacheExpireAfterWrite() {
        crawlerStatsHelper.setCacheExpireAfterWrite(30000);
        assertEquals(30000, crawlerStatsHelper.cacheExpireAfterWrite);
    }

    public void test_recordWithStatsAction() {
        String key = "test";
        crawlerStatsHelper.begin(key);
        crawlerStatsHelper.record(key, StatsAction.ACCESSED);
        crawlerStatsHelper.record(key, StatsAction.FINISHED);