// Test with negative byte values
        byte[] data2 = { (byte) 0xFF, (byte) 0xFE, (byte) 0x80, 0x7F };
        assertEquals("FF", Hexdump.toHexString(data2, 0, 2)); // 2 chars = 1 byte
        assertEquals("FFF", Hexdump.toHexString(data2, 0, 3)); // 3 chars = 1.5 bytes (rounds up to 2)
        assertEquals("FFFE", Hexdump.toHexString(data2, 0, 4)); // 4 chars = 2 bytes

        dst[di] = (byte) (s & 0xFF);
        di++;
        dst[di] = (byte) (s >> 8 & 0xFF);
        return 2;
    }

    /**
     * Encodes a 32-bit unsigned integer in little-endian byte order.
     *
     * @param i the integer value to encode
     * @param dst the destination byte array
     * @param di the starting index in the destination array
     * @return the number of bytes written (4)

        // Test with file ID having maximum byte values
        byte[] maxFileId = new byte[16];
        Arrays.fill(maxFileId, (byte) 0xFF);
        Smb2FlushRequest maxRequest = new Smb2FlushRequest(mockConfig, maxFileId);

        byte[] buffer = new byte[256];
        int written = maxRequest.writeBytesWireFormat(buffer, 0);

        assertEquals(24, written);

        byte[] copiedFileId = new byte[16];

        @Test
        @DisplayName("fromUNIBytes should decode UTF-16LE bytes to string")
        void testFromUNIBytes() {
            // Given
            byte[] bytes = TEST_STRING.getBytes(StandardCharsets.UTF_16LE);

            // When
            String result = Strings.fromUNIBytes(bytes, 0, bytes.length);

            // Then

    public AvSingleHost(final Configuration cfg) {
        this(new byte[8], cfg.getMachineId());
    }

    /**
     * Constructs an AvSingleHost with custom data and machine ID
     *
     * @param customData custom data for the single host (8 bytes)
     * @param machineId the machine identifier (32 bytes)
     */
    public AvSingleHost(final byte[] customData, final byte[] machineId) {
        this(encode(customData, machineId));
    }

  internal const val OPCODE_FLAG_CONTROL = 8

  /**
   * Byte 1 flag for whether the payload data is masked.
   *
   * If this flag is set, the next four
   * bytes represent the mask key. These bytes appear after any additional bytes specified by [B1_MASK_LENGTH].
   */
  internal const val B1_FLAG_MASK = 128

  /**
   * Byte 1 mask for the payload length.
   *
   * If this value is [PAYLOAD_SHORT], the next two

   *
   * @throws IllegalArgumentException if {@code bytes} has fewer than 4 elements
   */
  public static int fromByteArray(byte[] bytes) {
    checkArgument(bytes.length >= BYTES, "array too small: %s < %s", bytes.length, BYTES);
    return fromBytes(bytes[0], bytes[1], bytes[2], bytes[3]);
  }

  /**
   * Returns the {@code int} value whose byte representation is the given 4 bytes, in big-endian

    public static final byte TRANS2_SET_FILE_INFORMATION = (byte) 0x08;

    /**
     * Network share enumeration subcommand
     */
    public static final byte NET_SHARE_ENUM = (byte) 0x00;
    /**
     * Network server enumeration subcommand version 2
     */
    public static final byte NET_SERVER_ENUM2 = (byte) 0x68;
    /**
     * Network server enumeration subcommand version 3
     */

        long expectedTimestamp = -1L; // Represents all bits set to 1 for an 8-byte long
        byte[] rawBytes = new byte[8];
        SMBUtil.writeInt8(expectedTimestamp, rawBytes, 0);
        AvTimestamp avTimestamp = new AvTimestamp(rawBytes);

        assertEquals(expectedTimestamp, avTimestamp.getTimestamp());
    }

    /**
     * Test round-trip conversion: long -> bytes -> long.
     */
    @Test

    DataInput in = new LittleEndianDataInputStream(new ByteArrayInputStream(data));
    byte[] b = new byte[data.length];
    in.readFully(b);
    assertEquals(Bytes.asList(data), Bytes.asList(b));
  }

  public void testReadUnsignedByte_eof() throws IOException {
    DataInput in = new LittleEndianDataInputStream(new ByteArrayInputStream(new byte[0]));
    assertThrows(EOFException.class, () -> in.readUnsignedByte());
  }