UrlQueueImpl<Long> queue = new UrlQueueImpl<>();

        queue.setEncoding("UTF-8");
        assertEquals("UTF-8", queue.getEncoding());

        queue.setEncoding("ISO-8859-1");
        assertEquals("ISO-8859-1", queue.getEncoding());

        queue.setEncoding(null);
        assertNull(queue.getEncoding());
    }

    public void test_parentUrlGetterSetter() {

        final String originalEncoding = textExtractor.getEncoding();
        assertEquals("UTF-8", originalEncoding);

        textExtractor.setEncoding("ISO-8859-1");
        assertEquals("ISO-8859-1", textExtractor.getEncoding());

        // Reset
        textExtractor.setEncoding("UTF-8");
        assertEquals("UTF-8", textExtractor.getEncoding());
    }

    /**

                + "</doc>";

        final AccessResultDataImpl accessResultDataImpl = new AccessResultDataImpl();
        accessResultDataImpl.setData(value.getBytes(Constants.UTF_8));
        accessResultDataImpl.setEncoding(Constants.UTF_8);
        accessResultDataImpl.setTransformerName("xpathTransformer");

        final Object obj = xpathTransformer.getData(accessResultDataImpl);
        assertEquals(value, obj);
    }

    }

    @Test
    public void testEncoding() {
        CurlResponse response = new CurlResponse();
        String encoding = "UTF-8";

        response.setEncoding(encoding);

        assertEquals(encoding, response.getEncoding());
    }

    @Test
    public void testContentException() {
        CurlResponse response = new CurlResponse();
        Exception exception = new IOException("Test exception");

        AccessResultDataImpl<?> accessResultData = new AccessResultDataImpl<>();
        accessResultData.setData(xml.getBytes("UTF-8"));
        accessResultData.setEncoding("UTF-8");

        Map<String, Object> dataMap = XmlUtil.getDataMap(accessResultData);
        assertNotNull(dataMap);
        assertEquals("Test Title", dataMap.get("title"));
    }

                + "</doc>";

        final AccessResultDataImpl accessResultDataImpl = new AccessResultDataImpl();
        accessResultDataImpl.setData(value.getBytes(Constants.UTF_8));
        accessResultDataImpl.setEncoding(Constants.UTF_8);
        accessResultDataImpl.setTransformerName("xmlTransformer");

        final Object obj = xmlTransformer.getData(accessResultDataImpl);
        assertEquals(value, obj);
    }

    public void test_getData() throws Exception {
        final AccessResultDataImpl accessResultDataImpl = new AccessResultDataImpl();
        accessResultDataImpl.setData("hoge.txt".getBytes());
        accessResultDataImpl.setEncoding(Constants.UTF_8);
        accessResultDataImpl.setTransformerName("fileTransformer");

        setBaseDir();

        final Object obj = fileTransformer.getData(accessResultDataImpl);

    /**
     * Retrieves the encoding used for the access result data.
     *
     * @return the encoding as a String.
     */
    String getEncoding();

    /**
     * Sets the encoding for the access result data.
     *
     * @param encoding the encoding to set
     */
    void setEncoding(String encoding);

        final AccessResultDataImpl accessResultDataImpl = new AccessResultDataImpl();
        accessResultDataImpl.setData(value.getBytes());
        accessResultDataImpl.setEncoding(Constants.UTF_8);
        accessResultDataImpl.setTransformerName("htmlTransformer");

        final Object obj = htmlTransformer.getData(accessResultDataImpl);
        assertEquals(value, obj);
    }

            final UrlQueue<?> urlQueue = CrawlingParameterUtil.getUrlQueue();
            final ResultData resultData = new ResultData();
            resultData.setData(new byte[0]);
            resultData.setEncoding(Constants.UTF_8);
            resultData.setTransformerName(Constants.NO_TRANSFORMER);
            processResult(urlQueue, responseData, resultData);
        } else if (isSuccessful(responseData)) {