@Test
  fun dynamicTableSizeHasAnUpperBound() {
    hpackWriter!!.resizeHeaderTable(1048576)
    assertThat(hpackWriter!!.maxDynamicTableByteCount).isEqualTo(16384)
  }

  @Test
  fun huffmanEncode() {
    hpackWriter = Hpack.Writer(4096, true, bytesOut)
    hpackWriter!!.writeHeaders(headerEntries("foo", "bar"))
    val expected =
      Buffer()
        .writeByte(0x40) // Literal header, new name.

      @Throws(IOException::class)
      fun readByteString(): ByteString {
        val firstByte = readByte()
        val huffmanDecode = firstByte and 0x80 == 0x80 // 1NNNNNNN
        val length = readInt(firstByte, PREFIX_7_BITS).toLong()

        return if (huffmanDecode) {
          val decodeBuffer = Buffer()
          Huffman.decode(source, length, decodeBuffer)
          decodeBuffer.readByteString()

import okio.BufferedSink
import okio.BufferedSource
import okio.ByteString

/**
 * This class was originally composed from the following classes in
 * [Twitter Hpack][twitter_hpack].
 *
 *  * `com.twitter.hpack.HuffmanEncoder`
 *  * `com.twitter.hpack.HuffmanDecoder`
 *  * `com.twitter.hpack.HpackUtil`
 *
 * [twitter_hpack]: https://github.com/twitter/hpack
 */
object Huffman {
  // Appendix C: Huffman Codes