responseData.setResponseBody(ResourceUtil.getResourceAsFile("extractor/test.xml"), false);
        responseData.setCharSet(Constants.UTF_8);
        final ResultData resultData = xmlTransformer.transform(responseData);
        assertEquals(result, new String(resultData.getData(), Constants.UTF_8));
    }

    public void test_transformNs() throws Exception {
        final String result = "<?xml version=\"1.0\"?>\n"//

        responseData.setCharSet("ISO-8859-1");
        responseData.setMimeType("text/html");
        final ResultData resultData = htmlTransformer.transform(responseData);
        assertEquals(content, new String(resultData.getData()));
        assertEquals(1, resultData.getChildUrlSet().size());
        assertEquals("http://hoge/test2.html", resultData.getChildUrlSet().iterator().next().getUrl());
    }

    public void test_transform_urllink() {

    @Override
    public ResultData transform(final ResponseData responseData) {
        if (responseData == null || !responseData.hasResponseBody()) {
            throw new CrawlingAccessException("No response body.");
        }

        // encoding
        updateCharset(responseData);

        final ResultData resultData = new ResultData();
        resultData.setTransformerName(getName());

        try {

        return fessConfig;
    }

    @Override
    public Logger getLogger() {
        return logger;
    }

    @Override
    protected void storeData(final ResponseData responseData, final ResultData resultData) {
        final DOMParser parser = getDomParser();
        try (final BufferedInputStream bis = new BufferedInputStream(responseData.getResponseBody())) {
            final byte[] bomBytes = new byte[UTF8_BOM_SIZE];

            buf.append(getResultDataFooter());

            final ResultData resultData = new ResultData();
            resultData.setTransformerName(getName());

            final String data = buf.toString().trim();
            try {
                resultData.setData(data.getBytes(charsetName));
            } catch (final UnsupportedEncodingException e) {

        responseData.setCharSet(Constants.UTF_8);
        final ResultData resultData = new ResultData();
        xpathTransformer.storeData(responseData, resultData);
        assertEquals(result, new String(resultData.getData(), Constants.UTF_8));
    }

    public void test_getData() throws Exception {
        final String value = "<?xml version=\"1.0\"?>\n"//

    @Override
    public ResultData transform(final ResponseData responseData) {
        if (responseData == null || !responseData.hasResponseBody()) {
            throw new CrawlingAccessException("No response body.");
        }

        final ResultData resultData = new ResultData();
        resultData.setTransformerName(getName());
        try {

            }
            final Transformer transformer = ((DefaultResponseProcessor) responseProcessor).getTransformer();
            final ResultData resultData = transformer.transform(responseData);
            final byte[] data = resultData.getData();
            if (data != null) {
                try {
                    return (Map<String, Object>) SerializeUtil.fromBinaryToObject(data);

            responseData.setSessionId("test-1");
            responseData.setStatus(0);
            responseData.setUrl("http://fess.codelibs.org/test.html");
            /*ResultData resultData =*/fessXpathTransformer.transform(responseData);
            // System.out.println(resultData.toString());
        }

        long margin = 5000000L;
        System.gc();
        for (int i = 0; i < 30; i++) {

                    final Transformer transformer = ((DefaultResponseProcessor) responseProcessor).getTransformer();
                    final ResultData resultData = transformer.transform(responseData);
                    final byte[] data = resultData.getData();
                    if (data != null) {
                        try {
                            @SuppressWarnings("unchecked")