final byte[] utf8Decoded = Base64Util.decode(utf8Encoded);
        assertEquals("Round trip should preserve UTF-8 data", utf8Text, new String(utf8Decoded, "UTF-8"));

        // Test with binary data
        final byte[] binaryData = new byte[] { 0, 1, 2, 3, 127, (byte) 128, (byte) 255 };
        final String binaryEncoded = Base64Util.encode(binaryData);

        final ExtractData result = filenameExtractor.getText(in, null);

        assertNotNull(result);
        assertEquals("", result.getContent());
    }

    /**
     * Test extraction with empty parameters map.
     */
    public void test_getText_withEmptyParams() {
        final InputStream in = new ByteArrayInputStream(new byte[0]);

        // Create a large byte array (1MB)
        byte[] data = new byte[1024 * 1024];
        for (int i = 0; i < data.length; i++) {
            data[i] = (byte) (i % 256);
        }

        ContentCache cache = new ContentCache(data);

        try (InputStream stream = cache.getInputStream()) {
            assertNotNull(stream);
            byte[] buffer = new byte[data.length];

        assertEquals("3", "2", b[1]);
    }

    /**
     * @throws Exception
     */
    public void testObjectAndBinary() throws Exception {
        final String o = "hoge";
        final byte[] binary = SerializeUtil.fromObjectToBinary(o);
        assertEquals(o, SerializeUtil.fromBinaryToObject(binary));
    }

    /**
     * Test default filter allows common safe classes
     *
     * @throws Exception

        // Create a file larger than MAX_BUF_SIZE (10MB)
        // Write 11MB of data
        try (FileOutputStream fos = new FileOutputStream(largeFile)) {
            final byte[] chunk = new byte[1024 * 1024]; // 1MB
            for (int i = 0; i < 11; i++) { // Write 11MB
                fos.write(chunk);
            }
        }

        try {
            FileUtil.readBytes(largeFile);

        // Test that read(byte[]) delegates to underlying stream
        byte[] data = "Hello World".getBytes();
        InputStream underlyingStream = new ByteArrayInputStream(data);
        IgnoreCloseInputStream stream = new IgnoreCloseInputStream(underlyingStream);

        byte[] buffer = new byte[5];
        int bytesRead = stream.read(buffer);

        assertEquals(5, bytesRead);

        }
    }

    public void test_createResponseBodyFile_binaryContent() throws Exception {
        // Test with binary content
        byte[] binaryData = new byte[] { 0x00, 0x01, 0x02, (byte) 0xFF, (byte) 0xFE, (byte) 0xFD };

        ResponseData responseData = new ResponseData() {
            @Override
            public InputStream getResponseBody() {

    /**
     * Encrypts the given data.
     *
     * @param data
     *            the data to encrypt
     * @return the encrypted data
     */
    public byte[] encrypt(final byte[] data) {
        final Cipher cipher = pollEncryptoCipher();
        byte[] encrypted;
        try {
            encrypted = cipher.doFinal(data);
        } catch (final IllegalBlockSizeException e) {

    /**
     * A byte array that holds the cached content data.
     */
    private final byte[] data;

    /**
     * The file that is used to cache the content.
     */
    private final File file;

    /**
     * Constructs a ContentCache with the given byte array data.
     *
     * @param data the byte array containing the content

        CurlResponse response = new CurlResponse();
        byte[] data = "test content".getBytes();
        ContentCache cache = new ContentCache(data);
        response.setContentCache(cache);

        try (InputStream stream = response.getContentAsStream()) {
            assertNotNull(stream);
            byte[] buffer = new byte[1024];
            int bytesRead = stream.read(buffer);