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

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

    public void test_recordWithStatsAction() {
        String key = "test";
        crawlerStatsHelper.begin(key);

    }

    /**
     * Sets the cache expiration time after write in milliseconds.
     *
     * @param cacheExpireAfterWrite the expiration time in milliseconds
     */
    public void setCacheExpireAfterWrite(final long cacheExpireAfterWrite) {
        this.cacheExpireAfterWrite = cacheExpireAfterWrite;
    }

    /**
     * Key object for statistics tracking that contains an identifier and optional URL.