logNotificationTarget.expired();
        logNotificationTarget.expired();
        logNotificationTarget.expired();
        // No exception means success
    }

    @Test
    public void test_expired_disabled_doesNotDrainBuffer() {
        // Disable log notification
        ComponentUtil.getFessConfig().setLogNotificationEnabled(false);

        // Add events to buffer
        ComponentUtil.getLogNotificationHelper()