"512, FILE_NOTIFY_CHANGE_STREAM_NAME", "1024, FILE_NOTIFY_CHANGE_STREAM_SIZE", "2048, FILE_NOTIFY_CHANGE_STREAM_WRITE" })
    void testCompletionFilterConstants(int value, String description) {
        // Given & When
        request.setCompletionFilter(value);
        byte[] buffer = new byte[512];
        request.writeBytesWireFormat(buffer, 0);

        // Then

    void testWriteBytesWireFormatDirect() throws Exception {
        // Given
        byte[] buffer = new byte[512];
        int offset = 100;

        // First encode to set headerStart
        byte[] tempBuffer = new byte[512];
        request.encode(tempBuffer, 50);

        // When
        int bytesWritten = request.writeBytesWireFormat(buffer, offset);

        // Then

        assertEquals(131072, config.getRdmaMaxSendSize(), "Max send size should be 128KB");
        assertEquals(131072, config.getRdmaMaxReceiveSize(), "Max receive size should be 128KB");
        assertEquals(512, config.getRdmaCredits(), "Credits should be 512");
    }

    @Test
    public void testRdmaConfigurationInvalidValues() throws CIFSException {
        Properties props = new Properties();

        offset += 4;

        // free (4 bytes)
        SMBUtil.writeInt4(500000, buffer, offset);
        offset += 4;

        // bytesPerSect (2 bytes + 2 padding)
        SMBUtil.writeInt2(512, buffer, offset);
        offset += 4;

        // Set dataCount using reflection
        setDataCount(response, offset);

        int bytesRead = response.readDataWireFormat(buffer, 0, offset);

    /**
     * Number of bytes processed so far mod. 2 power of 64.
     */
    private long count;

    /**
     * 512 bits input buffer = 16 x 32-bit words holds until reaches 512 bits.
     */
    private byte[] buffer = new byte[BLOCK_LENGTH];

    /**
     * 512 bits work buffer = 16 x 32-bit words
     */
    private final int[] X = new int[16];

    // Constructors

            buffer.putLong(524288L); // Actual free allocation units (512K)
            buffer.putInt(8); // Sectors per allocation unit
            buffer.putInt(512); // Bytes per sector
            byte[] bufferArray = buffer.array();

            // When
            int bytesConsumed = fileFsFullSizeInfo.decode(bufferArray, 0, bufferArray.length);

            // Then

            buffer.putLong(1048576L); // Total allocation units (1M)
            buffer.putLong(524288L); // Free allocation units (512K)
            buffer.putInt(8); // Sectors per allocation unit
            buffer.putInt(512); // Bytes per sector
            byte[] bufferArray = buffer.array();

            // When
            int bytesConsumed = fileFsSizeInfo.decode(bufferArray, 0, bufferArray.length);

            // Then

    private static final int DEFAULT_HASH_ALGORITHM = HASH_ALGO_SHA512;
    private static final int SALT_SIZE = 32; // 32 bytes as per SMB 3.1.1 spec
    private static final int HASH_SIZE_SHA512 = 64; // SHA-512 produces 64-byte hashes

    // Session-specific preauth integrity contexts
    private final ConcurrentMap<String, PreauthIntegrityContext> sessionContexts = new ConcurrentHashMap<>();

    // Security configuration

    @Test
    public void testToStringContainsCount() {
        // Little-endian: count = 512 (0x0200)
        byte[] buf = new byte[12];
        buf[0] = 0x00;
        buf[1] = 0x02; // count = 512 in little-endian
        resp.readParameterWordsWireFormat(buf, 0);
        String str = resp.toString();
        assertTrue(str.contains("count=512"), "toString should include numeric count");
    }

    @Test

        when(mockConfig.getMinimumVersion()).thenReturn(DialectVersion.SMB210);
        request = new Smb2NegotiateRequest(mockConfig, Smb2Constants.SMB2_NEGOTIATE_SIGNING_REQUIRED);

        byte[] buffer = new byte[512];

        // When
        int bytesWritten = request.writeBytesWireFormat(buffer, 0);

        // Then
        assertTrue(bytesWritten > 0);

        // Verify structure size