assertEquals(outlen, expanded.length);

        // Test vectors from RFC 3961 Appendix A.1
        // 64-fold("012345")
        verifyNfold("012345", 8,
                new byte[] { (byte) 0xbe, (byte) 0x07, (byte) 0x26, (byte) 0x31, (byte) 0x27, (byte) 0x6b, (byte) 0x19, (byte) 0x55 });

        // 56-fold("password")
        verifyNfold("password", 7,

    }

    @Test
    @DisplayName("writeSecurityBuffer copies data and sets fields")
    void testWriteSecurityBufferNonZero() {
        byte[] dest = new byte[8 + 4];
        byte[] payload = { 0x55, 0x66, 0x77 };
        NtlmMessage.writeSecurityBuffer(dest, 0, 8, payload);
        assertEquals(3, NtlmMessage.readUShort(dest, 0), "Length field must be 3");

        assertEquals((byte) 0x56, dst[2]);
        assertEquals((byte) 0x78, dst[3]);
    }

    @Test
    void testReadInt2() {
        byte[] src = { (byte) 0x12, (byte) 0x34 };
        assertEquals(0x1234, NameServicePacket.readInt2(src, 0));
    }

    @Test
    void testReadInt4() {
        byte[] src = { (byte) 0x12, (byte) 0x34, (byte) 0x56, (byte) 0x78 };

     *      jcifs.internal.smb1.com.SmbComNTCreateAndXResponse)
     */
    @Override
    protected void customizeCreate(final SmbComNTCreateAndX request, final SmbComNTCreateAndXResponse response) {
        request.addFlags0(0x16);
        response.setExtended(true);
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.smb.SmbFile#getType()
     */
    @Override
    public int getType() throws SmbException {

    void testTransactionCommandConstants() {
        assertEquals((byte) 0x25, SmbComTransaction.SMB_COM_TRANSACTION);
        assertEquals((byte) 0xA0, SmbComTransaction.SMB_COM_NT_TRANSACT);
        assertEquals((byte) 0x26, SmbComTransaction.SMB_COM_TRANSACTION_SECONDARY);
        assertEquals((byte) 0xA1, SmbComTransaction.SMB_COM_NT_TRANSACT_SECONDARY);
    }

    @Test
    @DisplayName("Test sub-command constants")

     * SMB command to close a file handle.
     */
    public static final byte SMB_COM_CLOSE = (byte) 0x04;

    /**
     * SMB command to delete a file.
     */
    public static final byte SMB_COM_DELETE = (byte) 0x06;

    /**
     * SMB command to rename a file.
     */
    public static final byte SMB_COM_RENAME = (byte) 0x07;

    /**
     * SMB command to query file information.
     */

    /**
     * UTF-7 Byte Order Mark definition.
     */
    protected static final ByteOrderMark BOM_UTF_7 = new ByteOrderMark("UTF-7", 0x2B, 0x2F, 0x76);

    /**
     * HTML4 unescape translator.
     */
    protected static final CharSequenceTranslator UNESCAPE_HTML4 = new AggregateTranslator(

                // OID length claims more than available
                Arguments.of("oid length exceeds buffer", new byte[] { 0x04, 0x01, 0x00, 0x10, 0x06 }, IllegalArgumentException.class),

                // Missing NAME_LEN (not enough bytes for 4-byte length)
                Arguments.of("missing NAME_LEN bytes", new byte[] { 0x04, 0x01, 0x00, (byte) der.length, der[0] },

        src[srcIndex + 7] = 0x00;
        src[srcIndex + 8] = 0x00;
        src[srcIndex + 9] = 0x00;
        // rDataLength (2 bytes)
        src[srcIndex + 10] = 0x00;
        src[srcIndex + 11] = 0x06; // 6 bytes of data

        // Initialize questionName to avoid NPE
        Field questionNameField = NameServicePacket.class.getDeclaredField("questionName");
        questionNameField.setAccessible(true);

        buf[bodyStart + 2] = 0x02; // errorContextCount
        buf[bodyStart + 3] = 0x00; // reserved
        int bc = 4;
        SMBUtil.writeInt4(bc, buf, bodyStart + 4);
        byte[] err = new byte[] { 0x55, 0x66, 0x77, 0x01 };
        System.arraycopy(err, 0, buf, bodyStart + 8, bc);

        int decoded = resp.decode(buf, headerStart);
        assertTrue(decoded > 0);