@Test
    public void test_LuceneQueryParser() {
        QueryParser queryParser = new QueryParser();

        Query query = queryParser.createDefaultFilterChain().parse("fess");
        assertEquals(TermQuery.class, query.getClass());
        assertEquals("_default:fess", ((TermQuery) query).getTerm().toString());

        query = queryParser.createDefaultFilterChain().parse("title:fess");

        queryFieldConfig.init();
        ComponentUtil.register(queryFieldConfig, "queryFieldConfig");

        // Initialize QueryParser
        QueryParser queryParser = new QueryParser();
        queryParser.init();
        ComponentUtil.register(queryParser, "queryParser");

        // Initialize QueryProcessor if needed
        queryProcessor = new QueryProcessor();
        queryProcessor.init();

        queryFieldConfig.init();
        ComponentUtil.register(queryFieldConfig, "queryFieldConfig");

        // Initialize QueryParser
        QueryParser queryParser = new QueryParser();
        queryParser.init();
        ComponentUtil.register(queryParser, "queryParser");

        // Initialize QueryProcessor
        QueryProcessor queryProcessor = new QueryProcessor();
        queryProcessor.init();

        queryFieldConfig.init();
        ComponentUtil.register(queryFieldConfig, "queryFieldConfig");

        // Initialize QueryParser
        QueryParser queryParser = new QueryParser();
        queryParser.init();
        ComponentUtil.register(queryParser, "queryParser");

        // Initialize QueryProcessor
        QueryProcessor queryProcessor = new QueryProcessor();
        queryProcessor.init();

    }

    @Test
    public void test_hasQueryParser() {
        assertFalse(ComponentUtil.hasQueryParser());

        ComponentUtil.register(new Object(), "queryParser");
        assertTrue(ComponentUtil.hasQueryParser());
    }

    @Test
    public void test_hasViewHelper() {
        assertFalse(ComponentUtil.hasViewHelper());

    private static final String SSO_MANAGER = "ssoManager";

    private static final String PERMISSION_HELPER = "permissionHelper";

    private static final String QUERY_PARSER = "queryParser";

    private static final String DOCUMENT_HELPER = "documentHelper";

    private static final String ACTIVITY_HELPER = "activityHelper";

    private static final String LDAP_MANAGER = "ldapManager";