value = "zh_CN";
        assertEquals("zh_CN", systemHelper.normalizeLang(value));

        value = "zh-tw";
        assertEquals("zh_TW", systemHelper.normalizeLang(value));

        value = "zh_TW";
        assertEquals("zh_TW", systemHelper.normalizeLang(value));
    }

    public void test_createSearchRole() {
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {