/**
     * 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

	{"BETWEEN_64_KB_AND_256_KB", 64 * humanize.KiByte, 256*humanize.KiByte - 1},   // not exported, for support use only
	{"BETWEEN_256_KB_AND_512_KB", 256 * humanize.KiByte, 512*humanize.KiByte - 1}, // not exported, for support use only
	{"BETWEEN_512_KB_AND_1_MB", 512 * humanize.KiByte, humanize.MiByte - 1},       // not exported, for support use only
	{"BETWEEN_1024B_AND_1_MB", humanize.KiByte, humanize.MiByte - 1},

    @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

        // idFileSystem (4 bytes, skipped)
        writeInt4(100, buffer, 4); // sectPerAlloc
        writeInt4(1000, buffer, 8); // alloc
        writeInt4(500, buffer, 12); // free
        writeInt2(512, buffer, 16); // bytesPerSect

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

        assertEquals(20, bytesRead, "Should read 20 bytes");

        assertEquals(2048, result.length()); // 1024 bytes * 2 chars

        // Test partial conversion
        String partial = Hexdump.toHexString(data, 512, 256);
        assertEquals(512, partial.length()); // 256 bytes * 2 chars
        assertTrue(partial.startsWith("00010203")); // 512 % 256 = 0, so starts at 0
    }

        void testDataOffsetCalculation() {
            byte[] data = new byte[50];
            Arrays.fill(data, (byte) 0xAB);
            request.setData(data, 0, data.length);

            byte[] buffer = new byte[512];
            Arrays.fill(buffer, (byte) 0);

            int startIndex = 100;
            request.writeBytesWireFormat(buffer, startIndex);

            // Verify data is at correct position

            Smb2LockRequest req = new Smb2LockRequest(mockConfig, testFileId, locks);
            byte[] buffer = new byte[512];

            int bytesWritten = req.writeBytesWireFormat(buffer, 0);

            assertEquals(48, SMBUtil.readInt2(buffer, 0)); // Structure size
            assertEquals(3, SMBUtil.readInt2(buffer, 2)); // Lock count

        trans2SetFileInfo = new Trans2SetFileInformation(config, TEST_FID, mockFileInfo);

        byte[] buffer = new byte[512];
        int written = trans2SetFileInfo.writeParametersWireFormat(buffer, 0);

        // Should write 6 bytes: fid (2), info level (2), reserved (2)
        assertEquals(6, written);

        // Check FID

  }

  /** Returns a hash function implementing the SHA-512 algorithm (512 hash bits). */
  public static HashFunction sha512() {
    return Sha512Holder.SHA_512;
  }

  private static final class Sha512Holder {
    static final HashFunction SHA_512 =
        new MessageDigestHashFunction("SHA-512", "Hashing.sha512()");
  }

  /**

    }

    @Test
    void testWriteParametersWireFormat() {
        trans2QueryPathInfo = new Trans2QueryPathInformation(config, TEST_FILENAME, TEST_INFO_LEVEL);

        byte[] buffer = new byte[512];
        int written = trans2QueryPathInfo.writeParametersWireFormat(buffer, 0);

        // Check information level (first 2 bytes)
        int actualInfoLevel = SMBUtil.readInt2(buffer, 0);