// This is expected behavior as seen in the implementation at line 131
        assertEquals((byte) 0xCC, buffer[4]);
        assertEquals((byte) 0xCC, buffer[5]);
        assertEquals((byte) 0xCC, buffer[6]);
        assertEquals((byte) 0xCC, buffer[7]);

        // FileId (16 bytes) - should match our test file ID
        byte[] wireFileId = new byte[16];

            uuid.time_hi_and_version = (short) 0xDEF0;
            uuid.clock_seq_hi_and_reserved = (byte) 0x11;
            uuid.clock_seq_low = (byte) 0x22;
            uuid.node = new byte[] { (byte) 0xAA, (byte) 0xBB, (byte) 0xCC, (byte) 0xDD, (byte) 0xEE, (byte) 0xFF };

            // Mock the derive method to return a buffer for node encoding
            when(mockNdrBuffer.derive(anyInt())).thenReturn(mockNdrBuffer);

        assertEquals(24, SMBUtil.readInt2(buffer, 0));

        // Reserved1 (2 bytes) - should be 0 (bytes were initialized to 0xCC, so they weren't written)
        // This is expected behavior - the reserved fields are not explicitly written to 0

        // Reserved2 (4 bytes) - should be 0 (bytes were initialized to 0xCC, so they weren't written)
        // This is expected behavior - the reserved fields are not explicitly written to 0

    void testEquals() {
        byte[] testBytes1 = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10 };
        byte[] testBytes2 = Arrays.copyOf(testBytes1, 16);
        byte[] testBytes3 = new byte[] { 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20 };

        Smb2LeaseKey key1 = new Smb2LeaseKey(testBytes1);

    private static final byte CLOCK_SEQ_HI_AND_RESERVED = (byte) 0x88;
    private static final byte CLOCK_SEQ_LOW = (byte) 0x99;
    private static final byte[] NODE = { (byte) 0xAA, (byte) 0xBB, (byte) 0xCC, (byte) 0xDD, (byte) 0xEE, (byte) 0xFF };

    @Nested
    @DisplayName("Constructor Tests")
    class ConstructorTests {

        @Test

        byte[] header = buildHeader(NtStatus.NT_STATUS_INVALID_PARAMETER);
        byte[] body = buildErrorBody(2, 3, new byte[] { (byte) 0xAA, (byte) 0xBB, (byte) 0xCC });
        byte[] packet = new byte[header.length + body.length];
        System.arraycopy(header, 0, packet, 0, header.length);
        System.arraycopy(body, 0, packet, header.length, body.length);

            buffer[2] = 0x01; // Oplock level
            buffer[3] = (byte) 0xAA; // Reserved byte

            // Reserved2 field (4 bytes at offset 4)
            buffer[4] = (byte) 0xBB;
            buffer[5] = (byte) 0xCC;
            buffer[6] = (byte) 0xDD;
            buffer[7] = (byte) 0xEE;

            byte[] fileId = createTestData(16);
            System.arraycopy(fileId, 0, buffer, 8, 16);

            int flags = NegTokenInit.DELEGATION | NegTokenInit.INTEGRITY;
            byte[] mechToken = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05 };
            byte[] mic = new byte[] { (byte) 0xAA, (byte) 0xBB, (byte) 0xCC };

            NegTokenInit original = new NegTokenInit(mechs, flags, mechToken, mic);
            byte[] firstEncoding = original.toByteArray();

            // Multiple round-trips should produce identical results

        Configuration config = Mockito.mock(Configuration.class);
        Smb2CreateResponse resp = new Smb2CreateResponse(config, "file.txt");

        byte[] fileId = new byte[16];
        Arrays.fill(fileId, (byte) 0xCC);

        byte[] header = buildSmb2Header();
        int ctxOffsetFromHeader = 256; // arbitrary aligned location beyond header
        byte[] baseBody = buildCreateBodyWithContext(fileId, ctxOffsetFromHeader);

        int namedPipeState = 0x02;
        int readDataAvailable = 256;
        int numberOfMessages = 5;
        int messageLength = 128;
        byte[] testData = { (byte) 0xFF, (byte) 0xEE, (byte) 0xDD, (byte) 0xCC, (byte) 0xBB, (byte) 0xAA, (byte) 0x99, (byte) 0x88 };

        // Write values to buffer at offset
        SMBUtil.writeInt4(namedPipeState, buffer, bufferIndex);