final int len = str.length();
        int ch, size = 0;
        byte[] dst;

        for (int i = 0; i < len; i++) {
            ch = str.charAt(i);
            size += ch > 0x07F ? ch > 0x7FF ? 3 : 2 : 1;
        }
        dst = new byte[size];
        writeShort(size);
        try {
            Encdec.enc_utf8(str, dst, 0, size);
        } catch (final IOException ioe) {

     * @param dstIndex the starting index in the destination array
     * @param size the number of hex digits to write (will be left-padded with zeros)
     */
    public static void toHexChars(long val, final char dst[], final int dstIndex, int size) {
        while (size > 0) {
            dst[dstIndex + size - 1] = HEX_DIGITS[(int) (val & 0x000FL)];
            if (val != 0) {

     */
    public final byte[] getBlob() {
        return this.blob;
    }

    @Override
    protected int writeParameterWordsWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    protected int writeBytesWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    protected int readParameterWordsWireFormat(final byte[] buffer, int bufferIndex) {

        idx += 2;
        SMBUtil.writeInt4(0, data, idx); // Reserved
        idx += 4;

        return data;
    }

    @Override
    public int encode(byte[] dst, int dstIndex) {
        byte[] data = getData();
        System.arraycopy(data, 0, dst, dstIndex, data.length);
        return data.length;
    }

    @Override
    public int decode(byte[] buffer, int bufferIndex, int len) throws SMBProtocolDecodingException {

        public int size() {
            return testSize;
        }

        @Override
        protected int writeHeaderWireFormat(byte[] dst, int dstIndex) {
            return 64; // Simulate header writing
        }

        @Override
        public int encode(byte[] dst, int dstIndex) {
            // We need to override the parent ServerMessageBlock2's encode
            // to properly simulate setting the length field

      @Nullable Object[] src, int offset, int len, T[] dst) {
    checkPositionIndexes(offset, offset + len, src.length);
    if (dst.length < len) {
      dst = newArray(dst, len);
    } else if (dst.length > len) {
      @Nullable Object[] unsoundlyCovariantArray = dst;
      unsoundlyCovariantArray[len] = null;
    }
    arraycopy(src, offset, dst, 0, len);
    return dst;
  }

  /**

    }

    @Test
    void testWriteSetupWireFormat() {
        byte[] dst = new byte[100];
        int result = response.writeSetupWireFormat(dst, 0);
        assertEquals(0, result);
    }

    @Test
    void testWriteParametersWireFormat() {
        byte[] dst = new byte[100];
        int result = response.writeParametersWireFormat(dst, 0);
        assertEquals(0, result);
    }

    @Test

    }

    @Override
    protected int writeSetupWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    protected int writeParametersWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    protected int writeDataWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override

     * @param soff the offset in the source array
     * @param slen the length of data to process
     * @param dst the destination array for the result
     * @param doff the offset in the destination array
     */
    public void update(final byte[] src, int soff, final int slen, final byte[] dst, int doff) {
        int slim = soff + slen;
        while (soff < slim) {
            i = i + 1 & 0xff;

        // Test encode method
        byte[] dst = new byte[512];
        int dstIndex = 0;
        int expectedEncodeLength = 64;
        when(response.encode(dst, dstIndex)).thenReturn(expectedEncodeLength);
        assertEquals(expectedEncodeLength, response.encode(dst, dstIndex));

        // Test digest methods
        doNothing().when(response).setDigest(digest);