// Given
            byte[] buffer = new byte[100];
            when(mockAllocInfo.decode(any(byte[].class), anyInt(), anyInt())).thenReturn(42);

            // When
            int result = mockAllocInfo.decode(buffer, 10, 50);

            // Then
            assertEquals(42, result);
            verify(mockAllocInfo, times(1)).decode(buffer, 10, 50);
        }

        @Test

fs.s3a.fast.upload.buffer=disk # Use disk as the buffer for uploads
fs.s3a.fast.upload=true # Turn on fast upload mode
fs.s3a.max.total.tasks=2048 # Maximum number of parallel tasks
fs.s3a.multipart.size=512M # Size of each multipart chunk
fs.s3a.multipart.threshold=512M # Size before using multipart uploads
fs.s3a.socket.recv.buffer=65536 # Read socket buffer hint
fs.s3a.socket.send.buffer=65536 # Write socket buffer hint

            byte[] innerDigest = "inner_digest".getBytes();
            byte[] expectedOutput = "output_data".getBytes();
            byte[] buffer = new byte[expectedOutput.length + 10]; // Buffer with extra space

            when(mockMd5.digest()).thenReturn(innerDigest);
            when(mockMd5.digest(buffer, 0, expectedOutput.length)).thenAnswer(invocation -> {
                byte[] b = invocation.getArgument(0);

            this.cacheScope = DirectoryCacheScope.values()[scopeOrdinal];
            dataOffset += 4;
            
            this.maxCacheAge = readInt8(buffer, dataOffset);
            dataOffset += 8;
            
            int flags = readInt4(buffer, dataOffset);
            dataOffset += 4;
            
            this.notificationFilter = readInt4(buffer, dataOffset);
        }

    /**
     * Constructs an SMB negotiation result.
     *
     * @param request the negotiation request
     * @param response the negotiation response
     * @param negoReqBuffer the raw request buffer
     * @param negoRespBuffer the raw response buffer
     *
     */
    public SmbNegotiation(final SmbNegotiationRequest request, final SmbNegotiationResponse response, final byte[] negoReqBuffer,
            final byte[] negoRespBuffer) {

        return 0;
    }

    @Override
    int readSetupWireFormat(final byte[] buffer, final int bufferIndex, final int len) {
        return 0;
    }

    @Override
    int readParametersWireFormat(final byte[] buffer, final int bufferIndex, final int len) {
        return 0;
    }

    @Override
    int readDataWireFormat(final byte[] buffer, final int bufferIndex, final int len) {
        return 0;
    }

    @Override

	v := metacache{}
	var buf bytes.Buffer
	msgp.Encode(&buf, &v)
	b.SetBytes(int64(buf.Len()))
	en := msgp.NewWriter(msgp.Nowhere)
	b.ReportAllocs()
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		v.EncodeMsg(en)
	}
	en.Flush()
}

func BenchmarkDecodemetacache(b *testing.B) {
	v := metacache{}
	var buf bytes.Buffer
	msgp.Encode(&buf, &v)
	b.SetBytes(int64(buf.Len()))

	b.n = 0
	return nil
}

// Available returns how many bytes are unused in the buffer.
func (b *Writer) Available() int { return len(b.buf) - b.n }

// AvailableBuffer returns an empty buffer with b.Available() capacity.
// This buffer is intended to be appended to and
// passed to an immediately succeeding [Writer.Write] call.
// The buffer is only valid until the next write operation on b.
func (b *Writer) AvailableBuffer() []byte {

                    result.getMissingArtifacts(),
                    request.getRemoteRepositories());
        }

        // this should never happen since we checked all possible error sources before but better be sure
        if (result.hasExceptions()) {
            throw new ArtifactResolutionException(
                    "Unknown error during artifact resolution, " + request + ", " + result.getExceptions(),

    out.write(b);

    verify(hashFunction).newHasher();
    verify(hasher).putByte((byte) b);
    verifyNoMoreInteractions(hashFunction, hasher);
  }

  public void testWrite_putByteArray() throws Exception {
    byte[] buf = new byte[] {'y', 'a', 'm', 's'};
    HashingOutputStream out = new HashingOutputStream(hashFunction, buffer);
    out.write(buf);