frame.writeInt(expectedStreamId and 0x7fffffff)
    frame.writeAll(headerBlock)
    reader.nextFrame(requireSettings = false, assertHeaderBlock())
    assertThat(frame.exhausted()).isTrue()
  }

  @Test fun tooLargeDataFrame() {
    assertFailsWith<IllegalArgumentException> {
      sendDataFrame(Buffer().write(ByteArray(0x1000000)))
    }.also { expected ->