frame.writeByte(Http2.TYPE_DATA)
    frame.writeByte(FLAG_NONE)
    frame.writeInt(expectedStreamId and 0x7fffffff)
    frame.write(expectedData)

    // Check writer sends the same bytes.
    assertThat(sendDataFrame(Buffer().write(expectedData))).isEqualTo(frame)
    reader.nextFrame(
      requireSettings = false,
      object : BaseTestHandler() {
        override fun data(
          inFinished: Boolean,