prevRune int   // index of previous rune; or < 0
}

// Len returns the number of bytes of the unread portion of the
// slice.
func (r *Reader) Len() int {
	if r.i >= int64(len(r.s)) {
		return 0
	}
	return int(int64(len(r.s)) - r.i)
}

// Size returns the original length of the underlying byte slice.
// Size is the number of bytes available for reading via [Reader.ReadAt].

        this.newLeaseState = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        // BreakReason (4 bytes)
        this.breakReason = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        // AccessMaskHint (4 bytes)
        this.accessMaskHint = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        // ShareAccessHint (4 bytes)

        this.leaseFlags = leaseFlags;
    }

    @Override
    public int size() {
        // Context header: 16 bytes
        // Name: 4 bytes ("RqLs")
        // Padding: 4 bytes (to align data to 8-byte boundary)
        // Data: 32 bytes (lease V1 structure)
        return 16 + 4 + 4 + 32;
    }

    @Override
    public int encode(byte[] dst, int dstIndex) {

  private val readCompleteLatch = CountDownLatch(1)

  // The lists are held as a large array of UTF-8 bytes. This is to avoid allocating lots of strings
  // that will likely never be used. Each rule is separated by '\n'. Please see the
  // PublicSuffixListGenerator class for how these lists are generated.
  // Guarded by this.
  override lateinit var bytes: ByteString
  override lateinit var exceptionBytes: ByteString

        // Create message with 5 bytes of data
        byte[] data = new byte[] { 10, 20, 30, 40, 50 };
        InputStream in = new ByteArrayInputStream(concat(messageHeader(5), data));
        SocketInputStream sis = new SocketInputStream(in);

        // Skip 3 bytes
        assertEquals(3, sis.skip(3));

        // Read remaining 2 bytes
        byte[] remaining = new byte[2];

    }

    /**
     * Encodes this SPNEGO token to a byte array
     * @return the encoded token bytes
     */
    public abstract byte[] toByteArray();

    /**
     * Parses the provided token bytes to populate this SPNEGO token
     * @param token the token bytes to parse
     * @throws IOException if parsing fails
     */
    protected abstract void parse(byte[] token) throws IOException;

import (
	"bytes"
	"testing"

	"github.com/tinylib/msgp/msgp"
)

func TestMarshalUnmarshalhealingTracker(t *testing.T) {
	v := healingTracker{}
	bts, err := v.MarshalMsg(nil)
	if err != nil {
		t.Fatal(err)
	}
	left, err := v.UnmarshalMsg(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {
		t.Errorf("%d bytes left over after UnmarshalMsg(): %q", len(left), left)
	}

                bytes[byteIndex++] = (byte) (0xE0 | (c >> 12));
                bytes[byteIndex++] = (byte) (0x80 | ((c >> 6) & 0x3F));
                bytes[byteIndex++] = (byte) (0x80 | (c & 0x3F));
            }
        }

        return Arrays.copyOf(bytes, byteIndex);
    }

    /**
     * Convert byte array to char array (UTF-8)
     */
    private char[] bytesToChars(byte[] bytes) {
        if (bytes == null) {

     */
    public void setLength(final int length) {
        deferred.length = length;
    }

    /**
     * Advances the buffer index by the specified number of bytes.
     *
     * @param n the number of bytes to advance
     */
    public void advance(final int n) {
        index += n;
        if (index - start > deferred.length) {
            deferred.length = index - start;
        }

        // Verify total data count (4 bytes at position 7)
        assertEquals(200, SMBUtil.readInt4(dst, 7));

        // Verify max parameter count (4 bytes at position 11)
        assertEquals(1024, SMBUtil.readInt4(dst, 11));

        // Verify max data count (4 bytes at position 15)
        assertEquals(2048, SMBUtil.readInt4(dst, 15));

        // Verify parameter count (4 bytes at position 19)