* The class is thread-safe and uses ThreadLocal to maintain Kryo instances
 * per thread to avoid synchronization overhead.
 * </p>
 *
 */
public class DataSerializer {

    /** Logger for this class. */
    private static final Logger logger = LogManager.getLogger(DataSerializer.class);

    /** Constant for JavaBin serializer type. */
    protected static final String JAVABIN = "javabin";

        super.tearDown(testInfo);
        serializer = null;
    }

    /**
     * Test DataSerializer can be instantiated
     */
    @Test
    public void test_constructor() {
        DataSerializer ds = new DataSerializer();
        assertNotNull(ds, "DataSerializer should be instantiable");
    }

    /**
     * Test serialization and deserialization of simple String
     */
    @Test

                if (data != null) {
                    try {
                        final DataSerializer dataSerializer = ComponentUtil.getComponent("dataSerializer");
                        @SuppressWarnings("unchecked")
                        final Map<String, Object> responseDataMap = (Map<String, Object>) dataSerializer.fromBinaryToObject(data);
                        return responseDataMap;

        if (logger.isDebugEnabled()) {
            logger.debug("Initializing {}", this.getClass().getSimpleName());
        }
        fessConfig = ComponentUtil.getFessConfig();
        dataSerializer = ComponentUtil.getComponent("dataSerializer");
    }

    /**
     * Gets the Fess configuration instance.
     *
     * @return the Fess configuration
     */
    @Override
    public FessConfig getFessConfig() {

                            try {
                                final DataSerializer dataSerializer = ComponentUtil.getComponent("dataSerializer");
                                @SuppressWarnings("unchecked")
                                final Map<String, Object> responseDataMap = (Map<String, Object>) dataSerializer.fromBinaryToObject(data);
                                mergeResponseData(dataMap, responseDataMap);

    /** Fess configuration instance */
    protected FessConfig fessConfig;

    /** Data serializer for converting objects to binary format */
    protected DataSerializer dataSerializer;

    /** Flag indicating whether to process Google on/off comments */
    protected boolean useGoogleOffOn = true;

    /** Map storing field pruning rules */

    /**
     * The Fess configuration.
     */
    protected FessConfig fessConfig;

    /**
     * The data serializer.
     */
    protected DataSerializer dataSerializer;

    /**
     * Get the extractor.
     * @param responseData The response data.
     * @return The extractor.
     */
    protected abstract Extractor getExtractor(ResponseData responseData);

public class FessFileTransformerTest extends UnitFessTestCase {

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        ComponentUtil.register(new DataSerializer(), "dataSerializer");
        // Setup protocolHelper with test configuration
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            @Override
            public String getCrawlerWebProtocols() {

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        ComponentUtil.register(new DataSerializer(), "dataSerializer");
        // Register protocolHelper - it doesn't need FessConfig for the methods used in tests
        ComponentUtil.register(new ProtocolHelper(), "protocolHelper");
    }

    @Test