@Test
        @DisplayName("Decode error handling should work correctly")
        void testDecodeErrorHandling() throws Exception {
            // Given
            when(mockHandle.getMaxXmit()).thenReturn(1024);
            when(mockHandle.getMaxRecv()).thenReturn(1024);
            DcerpcBind bindMessage = new DcerpcBind(mockBinding, mockHandle);

            // When - Decode with error response

                    .thenReturn(0); // cancel count

            message.decode(mockBuffer);

            assertEquals(DcerpcConstants.RPC_PT_RESPONSE, message.ptype);
            assertEquals(100, message.alloc_hint);
        }

        @Test
        @DisplayName("decode should handle FAULT ptype correctly")
        void testDecodeFaultPtype() throws NdrException {

     * @throws NdrException if encoding fails
     */
    public abstract void encode_in(NdrBuffer buf) throws NdrException;

    /**
     * Decode the output parameters from this DCERPC message.
     * @param buf the buffer to decode from
     * @throws NdrException if decoding fails
     */
    public abstract void decode_out(NdrBuffer buf) throws NdrException;

    }

    @Override
    public int decode(byte[] buffer, int bufferIndex, int len) throws SMBProtocolDecodingException {
        // Reconnect response has no data - length should be 0
        if (len != 0) {
            throw new SMBProtocolDecodingException("Invalid durable handle reconnect response length: " + len);
        }

        // No data to decode
        return 0;
    }

    /**

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

/**
 * JUnit 5 tests for AndXServerMessageBlock in legacy smb1 package.
 *
 * The tests use small stub subclasses to drive encode/decode paths and
 * validate batching, chaining, signing, and NT_CREATE_ANDX extended handling.
 */
class AndXServerMessageBlockTest {

    /**
     * Test stub for AndXServerMessageBlock to control read/write logic.
     */

    public long getFree() {
        return this.free * this.sectPerAlloc * this.bytesPerSect;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.Decodable#decode(byte[], int, int)
     */
    @Override
    public int decode(final byte[] buffer, int bufferIndex, final int len) throws SMBProtocolDecodingException {
        final int start = bufferIndex;

        // Read total allocation units.

     * @param len the length of data to decode
     * @throws IOException if an I/O error occurs during decoding
     */
    public FileNotifyInformationImpl(final byte[] buffer, final int bufferIndex, final int len) throws IOException {
        decode(buffer, bufferIndex, len);
    }

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

        bufferIndex += i.decode(buffer, bufferIndex, len);
        this.notifyInformation.add(i);

        while (i.getNextEntryOffset() > 0) {
            bufferIndex = elemStart + i.getNextEntryOffset();
            elemStart = bufferIndex;

            i = new FileNotifyInformationImpl();
            bufferIndex += i.decode(buffer, bufferIndex, len);
            this.notifyInformation.add(i);

                0xA5A5A5A5, fileId);
        byte[] packet = buildPacket(header, body, null, null);

        int read = resp.decode(packet, 0, false);
        assertTrue(read >= SMB2_HEADER_LENGTH + body.length, "Should decode at least header+body");

        // Validate simple getters
        assertEquals((byte) 0x7, resp.getOplockLevel());
        assertEquals((byte) 0x2, resp.getOpenFlags());

            _dst = _dst.derive(_nodei);
            for (int _i = 0; _i < _nodes; _i++) {
                _dst.enc_ndr_small(node[_i]);
            }
        }

        @Override
        public void decode(NdrBuffer _src) throws NdrException {
            _src.align(4);
            time_low = _src.dec_ndr_long();
            time_mid = (short) _src.dec_ndr_short();
            time_hi_and_version = (short) _src.dec_ndr_short();