private val BINARY =
    Array(256) {
      format("%8s", Integer.toBinaryString(it)).replace(' ', '0')
    }

  init {
    FLAGS[FLAG_NONE] = ""
    FLAGS[FLAG_END_STREAM] = "END_STREAM"

    val prefixFlags = intArrayOf(FLAG_END_STREAM)

    FLAGS[FLAG_PADDED] = "PADDED"
    for (prefixFlag in prefixFlags) {
      FLAGS[prefixFlag or FLAG_PADDED] = FLAGS[prefixFlag] + "|PADDED"
    }

    // does. So we can't assume the client's empty DATA will be logged first.
    assertThat(countFrames(logs, "FINE: >> 0x00000003     0 DATA          END_STREAM"))
      .isEqualTo(1)
    assertThat(countFrames(logs, "FINE: >> 0x00000003     3 DATA          END_STREAM"))
      .isEqualTo(1)
  }

  @Test
  fun pingsTransmitted() {
    // Ping every 500 ms, starting at 500 ms.
    client =
      client

        outFinished = errorCode == null
      }
      if (!sink.finished) {
        // We have 0 or more frames of data, and 0 or more frames of trailers. We need to send at
        // least one frame with the END_STREAM flag set. That must be the last frame, and the
        // trailers must be sent after all of the data.
        val hasData = sendBuffer.size > 0L
        val hasTrailers = trailers != null
        when {

    val ping = peer.takeFrame()
    assertThat(ping.type).isEqualTo(Http2.TYPE_PING)
  }

  @Test fun serverWritesTrailersWithData() {
    // We buffer some outbound data and headers and confirm that the END_STREAM flag comes with the
    // headers (and not with the data).

    // Write the mocking script. for the client
    peer.setClient(true)

    // Write the mocking script.