assertNull(info.sort);
        assertNull(info.missing);
    }

    // Test init method with various configurations
    public void test_init_withAllFields() {
        FessConfig fessConfig = new FessConfig.SimpleImpl() {
            @Override
            public String getQueryFacetFields() {
                return "field1, field2, field3";
            }

            @Override
            public String getQueryFacetFieldsSize() {

    }

    public void test_setFessConfig_notNull() {
        FessConfig mockConfig = new FessConfig.SimpleImpl();
        ComponentUtil.setFessConfig(mockConfig);
        assertSame(mockConfig, ComponentUtil.getFessConfig());
    }

    public void test_getFessConfig_cached() {
        FessConfig mockConfig = new FessConfig.SimpleImpl();
        ComponentUtil.setFessConfig(mockConfig);

    }

    public void test_initializeClientFactory() {
        final Map<String, String> systemPropMap = new HashMap<>();
        FessProp.propMap.clear();
        FessConfig fessConfig = new FessConfig.SimpleImpl() {
            @Override
            public String getSystemProperty(final String key, final String defaultValue) {
                return systemPropMap.getOrDefault(key, defaultValue);
            }

    private TestLabelTypeHelper labelTypeHelper;
    private TestLanguageHelper languageHelper;
    private TestSearchEngineClient searchEngineClient;
    private TestIngestFactory ingestFactory;
    private FessConfig.SimpleImpl fessConfig;

    @Override
    public void setUp() throws Exception {
        super.setUp();

        // Clear cached components in ComponentUtil using reflection
        try {

     */
    protected void writeFessConfig(final ZipOutputStream zos, final String id) {
        if (fessConfig instanceof SimpleImpl) {
            final Properties prop = new Properties();
            ((SimpleImpl) fessConfig).keySet().stream().forEach(k -> prop.setProperty(k, fessConfig.get(k)));

            final ZipEntry entry = new ZipEntry(id + "/fess_config.properties");

        ComponentUtil.setFessConfig(createBaseFessConfig());
    }

    /**
     * Creates a base FessConfig implementation with common fields
     */
    protected FessConfig.SimpleImpl createBaseFessConfig() {
        return new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

            @Override
            public String get(String key) {

        // Assert result is empty when successful
        assertEquals("", result);
    }

    // Test configuration class extending FessConfig.SimpleImpl
    private static class TestFessConfig extends FessConfig.SimpleImpl {
        private static final long serialVersionUID = 1L;
    }

        assertEquals(1, headerMap.size());
        assertEquals("def", headerMap.get("X-Def"));
    }

    private FessConfig createFessConfigWithResponseHeaders(final String text) {
        return new FessConfig.SimpleImpl() {
            @Override
            public String getResponseHeaders() {
                return text;
            }
        };
    }

            assertTrue(true);
        }
    }

    public void test_getAvailableBoostDocumentRuleList() {
        // Mock FessConfig
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

            @Override
            public Integer getPageDocboostMaxFetchSizeAsInteger() {
                return 100;
            }

        assertEquals("guest", permissionHelper.encode("guest"));

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

            @Override
            public String getRoleSearchUserPrefix() {
                return fessConfig.getRoleSearchUserPrefix();
            }