65536, // 64KB per chunk
                    196608 // 192KB total (3 * 64KB)
            );

            int bytesDecoded = response.decode(buffer, 0, buffer.length);

            assertEquals(12, bytesDecoded);
            assertEquals(3, response.getChunksWritten());
            assertEquals(65536, response.getChunkBytesWritten());

        byte[] largeBuffer = new byte[65536]; // 64KB buffer

        // Act & Assert
        assertEquals(0, response.writeSetupWireFormat(largeBuffer, 0));
        assertEquals(0, response.writeParametersWireFormat(largeBuffer, 32768));
        assertEquals(0, response.writeDataWireFormat(largeBuffer, 65535));
        assertEquals(0, response.readSetupWireFormat(largeBuffer, 0, 65536));

	MOVBU	R4, 65536(R5)			// 1e020014de971000c4030029
	MOVBU	R4, 4096(R5)			// 3e000014de971000c4030029
	SC	R4, 65536(R5)			// 1e040010de971000c4030021
	SCV	R4, 65536(R5)			// 1e040010de971000c4030023
	LL	65536(R5), R4			// 1e040010de971000c4030020
	LLV	65536(R5), R4			// 1e040010de971000c4030022
	MOVW	y+65540(FP), R4			// 1e020014de8f1000c4338028
	MOVWU	y+65540(FP), R4			// 1e020014de8f1000c433802a

    }

    @Test
    void testWriteSingleByte() throws IOException, CIFSException {
        // Given
        when(mockTreeHandle.isSMB2()).thenReturn(true);
        when(mockTreeHandle.getSendBufferSize()).thenReturn(65536);
        when(mockFileHandle.isValid()).thenReturn(false, true); // First false to trigger ensureOpen, then true
        when(mockFileHandle.getFileId()).thenReturn(new byte[16]);

    public static final int MAX_DOMAIN_LENGTH = 255;
    public static final int MAX_SHARE_NAME_LENGTH = 80;
    public static final int MAX_BUFFER_SIZE = 65536; // 64KB default max buffer
    public static final int MAX_SMB2_BUFFER_SIZE = 8388608; // 8MB for SMB2/3
    public static final int MAX_CREDITS = 65535;

    // Patterns for validation
    private static final Pattern VALID_USERNAME = Pattern.compile("^[a-zA-Z0-9._\\-@]+$");

    @Test
    @DisplayName("Test edge case with maximum buffer index")
    void testReadBytesWireFormatMaxBufferIndex() throws SMBProtocolDecodingException {
        byte[] buffer = new byte[65536]; // Large buffer
        int bufferIndex = 65534; // Near the end

        // Set structure size to 2
        SMBUtil.writeInt2(2, buffer, bufferIndex);

        int result = response.readBytesWireFormat(buffer, bufferIndex);

        byte[] largeBuffer = new byte[65536]; // 64KB buffer

        // Act & Assert
        assertEquals(0, response.writeSetupWireFormat(largeBuffer, 0));
        assertEquals(0, response.writeParametersWireFormat(largeBuffer, 32768));
        assertEquals(0, response.writeDataWireFormat(largeBuffer, 65535));
        assertEquals(0, response.readSetupWireFormat(largeBuffer, 0, 65536));

	ADDV	$65536, R4		// 1e02001484f81000
	ADDV	$4096, R4		// 3e00001484f81000
	AND	$65536, R4, R5		// 1e02001485f81400
	AND	$4096, R4, R5		// 3e00001485f81400
	AND	$65536, R4		// 1e02001484f81400
	AND	$4096, R4		// 3e00001484f81400
	SGT	$65536, R4, R5		// 1e02001485781200
	SGT	$4096, R4, R5		// 3e00001485781200
	SGT	$65536, R4		// 1e02001484781200
	SGT	$4096, R4		// 3e00001484781200
	SGTU	$65536, R4, R5		// 1e02001485f81200

    assertThat(UnsignedLongs.remainder(0xfffffffffffffffdL, 0xfffffffffffffffeL))
        .isEqualTo(0xfffffffffffffffdL);
    assertThat(UnsignedLongs.remainder(0xfffffffffffffffeL, 65535)).isEqualTo(65534L);
    assertThat(UnsignedLongs.remainder(0xfffffffffffffffeL, 2)).isEqualTo(0);
    assertThat(UnsignedLongs.remainder(0xfffffffffffffffeL, 5)).isEqualTo(4);
  }

  private static final int BYTE_MAX_SIZE = 1 << Byte.SIZE; // 2^8 = 256
  private static final int BYTE_MASK = (1 << Byte.SIZE) - 1; // 2^8 - 1 = 255

  private static final int SHORT_MAX_SIZE = 1 << Short.SIZE; // 2^16 = 65_536
  private static final int SHORT_MASK = (1 << Short.SIZE) - 1; // 2^16 - 1 = 65_535

  /**
   * Returns the power of 2 hashtable size required to hold the expected number of items or the