assertTrue("Expected at least 500ms delay", elapsed >= 450); // default is 500ms
    }

    /**
     * Test delayForWaitingNewUrl with default delay
     */
    public void test_delayForWaitingNewUrl_defaultDelay() {
        final DefaultIntervalController controller = new DefaultIntervalController();

        final long start = System.nanoTime();
        controller.delayForWaitingNewUrl();