assertTrue("Expected at least 1000ms delay", elapsed >= 950); // default is 1000ms
    }

    /**
     * Test delayForWaitingNewUrl with custom delay
     */
    public void test_delayForWaitingNewUrl_customDelay() {
        final DefaultIntervalController controller = new DefaultIntervalController();
        controller.setDelayMillisForWaitingNewUrl(200L);

        final long start = System.nanoTime();