start = System.currentTimeMillis();
        helper.delayByRules();
        end = System.currentTimeMillis();
        assertTrue(end - start >= 10); // Should wait for delay
    }

    public void test_setCrawlerRunning() {
        IntervalControlHelper helper = new IntervalControlHelper();

        // Test default state
        assertTrue(helper.isCrawlerRunning());

        // Test setting to false