crawler.sendMail(infoMap);
        } catch (Exception e) {
            fail("Should not throw exception: " + e.getMessage());
        }
    }

    @Test
    public void test_sendMail_withNotificationEnabled() {
        // Override fessConfig to enable notification
        FessConfig notificationConfig = new FessConfig.SimpleImpl() {
            @Override
            public boolean hasNotification() {