crawlerStatsHelper.setMaxCacheSize(500);
        assertEquals(500, crawlerStatsHelper.maxCacheSize);
    }

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

    @Test
    public void test_recordWithStatsAction() {
        String key = "test";