// Execute
        final InvalidQueryException exception = new InvalidQueryException(messageCode, message, middleCause);

        // Verify cause chain is preserved
        assertEquals(middleCause, exception.getCause());
        assertEquals(rootCause, exception.getCause().getCause());
    }

    public void test_emptyMessage() {
        // Setup

    private static final byte[] CONTEXT_NAME_BYTES = CONTEXT_NAME.getBytes();
    private static final int STRUCTURE_SIZE = 16;

    private long reserved; // Must be zero

    /**
     * Create a new durable handle request
     */
    public DurableHandleRequest() {
        this.reserved = 0;
    }

    @Override
    public byte[] getName() {
        return CONTEXT_NAME_BYTES;
    }

    @Override

   * the XML specification.
   *
   * <p>This escaper does not escape non-ASCII characters to their numeric character references
   * (NCR). Any non-ASCII characters appearing in the input will be preserved in the output.
   * Specifically "\r" (carriage return) is preserved in the output, which may result in it being
   * silently converted to "\n" when the XML is parsed.
   *
   * <p>This escaper does not treat surrogate pairs specially and does not perform Unicode

        assertThrows(IOException.class, () -> new NegTokenTarg(bad), "Malformed byte[] should cause IOException");
    }

    @Test
    @DisplayName("mechanism token empty array – preserved after round‑trip")
    void testEmptyMechanismToken() throws IOException {
        NegTokenTarg nt = new NegTokenTarg();
        nt.setResult(NegTokenTarg.REQUEST_MIC);

        final int start = dstIndex;

        SMBUtil.writeInt2(this.fid, dst, dstIndex);
        dstIndex += 2;
        dst[dstIndex] = (byte) 0x00; // Reserved
        dstIndex++;
        dst[dstIndex++] = (byte) 0x00; // Reserved
        SMBUtil.writeInt4(this.securityInformation, dst, dstIndex);
        dstIndex += 4;
        return dstIndex - start;
    }

    @Override

        bufferIndex += 4;

        this.leaseFlags = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        // LeaseDuration (8 bytes) - reserved, skip
        bufferIndex += 8;

        byte[] parentKeyBytes = new byte[16];
        System.arraycopy(buffer, bufferIndex, parentKeyBytes, 0, 16);
        this.parentLeaseKey = new Smb2LeaseKey(parentKeyBytes);

        int bytesWritten = smbComNtTransaction.writeParameterWordsWireFormat(dst, 0);

        // 1 (reserved) + 2 (reserved) + 4 (totalParameterCount) + 4 (totalDataCount) +
        // 4 (parameterCount) + 4 (parameterOffset) + 4 (parameterDisplacement) +
        // 4 (dataCount) + 4 (dataOffset) + 4 (dataDisplacement) + 1 (reserved)
        assertEquals(36, bytesWritten, "Number of bytes written should be 36 for secondary transaction");

        assertEquals((byte) (informationLevel & 0xFF), dst[0]);
        assertEquals((byte) ((informationLevel >> 8) & 0xFF), dst[1]);
        // Check reserved bytes
        for (int i = 2; i < 6; i++) {
            assertEquals((byte) 0x00, dst[i], "Reserved byte at index " + i + " should be 0.");
        }
        // Check filename
        byte[] filenameBytes = filename.getBytes();

        // dataDisplacement (4 bytes)
        SMBUtil.writeInt4(0, buffer, bufferIndex + 31);

        // setupCount (1 byte) + 1 reserved byte
        buffer[bufferIndex + 35] = 0x00; // setupCount = 0
        buffer[bufferIndex + 36] = 0x00; // reserved

        int bytesRead = response.readParameterWordsWireFormat(buffer, bufferIndex);

        // Verify the correct number of bytes were read (37 bytes total)

        final int start = bufferIndex;

        buffer[bufferIndex] = (byte) 0x00; // Reserved
        bufferIndex++;
        buffer[bufferIndex++] = (byte) 0x00; // Reserved
        buffer[bufferIndex++] = (byte) 0x00; // Reserved

        totalParameterCount = readInt4(buffer, bufferIndex);
        if (bufDataStart == 0) {
            bufDataStart = totalParameterCount;