assertFalse(protocolHelper.isValidWebProtocol(""));
        assertFalse(protocolHelper.isValidWebProtocol("xyz"));
    }

    public void test_isValidFileProtocol_validUrls() {
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            @Override
            public String getCrawlerWebProtocols() {
                return "http,https";
            }