List<Sink> sinks = new ArrayList<>();
      for (int chunkSize = 4; chunkSize <= 32; chunkSize++) {
        for (int bufferSize = chunkSize; bufferSize <= chunkSize * 4; bufferSize += chunkSize) {
          // yes, that's a lot of sinks!
          sinks.add(new Sink(chunkSize, bufferSize));
          // For convenience, testing only with big endianness, to match DataOutputStream.

  private final int chunkSize;

  /**
   * Constructor for use by subclasses. This hasher instance will process chunks of the specified
   * size.
   *
   * @param chunkSize the number of bytes available per {@link #process(ByteBuffer)} invocation;
   *     must be at least 4
   */
  protected AbstractStreamingHasher(int chunkSize) {
    this(chunkSize, chunkSize);
  }

  /**

	}
	// Valid test cases for each chunk line.
	for i, tt := range testCases {
		chunkSize, chunkSignature, err := readChunkLine(tt.reader)
		if err != tt.expectedErr {
			t.Errorf("Test %d: Expected %s, got %s", i+1, tt.expectedErr, err)
		}
		if !bytes.Equal(chunkSize, tt.chunkSize) {
			t.Errorf("Test %d: Expected %s, got %s", i+1, string(tt.chunkSize), string(chunkSize))
		}
		if !bytes.Equal(chunkSignature, tt.chunkSignature) {

    headersBuilder.add(CHUNKED_BODY_HEADER)

    val bytesOut = Buffer()
    while (!body.exhausted()) {
      val chunkSize = minOf(body.size, maxChunkSize.toLong())
      bytesOut.writeHexadecimalUnsignedLong(chunkSize)
      bytesOut.writeUtf8("\r\n")
      bytesOut.write(body, chunkSize)
      bytesOut.writeUtf8("\r\n")
    }
    bytesOut.writeUtf8("0\r\n") // Last chunk. Trailers follow!
    this.body = bytesOut

      ByteStreams.copy(inChannel, outChannel);
    }
    byte[] actual = out.toByteArray();
    for (int i = 0; i < 500 * chunkSize; i += chunkSize) {
      assertThat(Arrays.copyOfRange(actual, i, i + chunkSize)).isEqualTo(dummyData);
    }
  }

  public void testReadFully() throws IOException {
    byte[] b = new byte[10];

    assertThrows(

      ByteStreams.copy(inChannel, outChannel);
    }
    byte[] actual = out.toByteArray();
    for (int i = 0; i < 500 * chunkSize; i += chunkSize) {
      assertThat(Arrays.copyOfRange(actual, i, i + chunkSize)).isEqualTo(dummyData);
    }
  }

  public void testReadFully() throws IOException {
    byte[] b = new byte[10];

    assertThrows(

func calculateStreamContentLength(dataLen, chunkSize int64) int64 {
	if dataLen <= 0 {
		return 0
	}
	chunksCount := dataLen / chunkSize
	remainingBytes := dataLen % chunkSize
	var streamLen int64
	streamLen += chunksCount * calculateSignedChunkLength(chunkSize)
	if remainingBytes > 0 {
		streamLen += calculateSignedChunkLength(remainingBytes)
	}

	const chunkSize = 1024
	chunks := int(size / chunkSize)
	// write size bytes plus "END\n" to a zip file
	buf := new(rleBuffer)
	w := NewWriter(buf)
	f, err := w.CreateHeader(&FileHeader{
		Name:   "huge.txt",
		Method: Store,
	})
	if err != nil {
		t.Fatal(err)
	}
	f.(*fileWriter).crc32 = fakeHash32{}
	chunk := make([]byte, chunkSize)
	for i := range chunk {
		chunk[i] = '.'

        val bytesOut = Buffer()
        while (!body.exhausted()) {
          val chunkSize = minOf(body.size, maxChunkSize.toLong())
          bytesOut.writeHexadecimalUnsignedLong(chunkSize)
          bytesOut.writeUtf8("\r\n")
          bytesOut.write(body, chunkSize)
          bytesOut.writeUtf8("\r\n")
        }
        bytesOut.writeUtf8("0\r\n") // Last chunk. Trailers follow!

          }

          chunked -> {
            chunkSizes = mutableListOf()
            hasBody = true
            while (true) {
              val chunkSize =
                socket.source
                  .readUtf8LineStrict()
                  .trim()
                  .toInt(16)
              if (chunkSize == 0) {
                readEmptyLine(socket.source)
                break