val windowUpdate = peer.takeFrame()
        assertThat(windowUpdate.type).isEqualTo(Http2.TYPE_WINDOW_UPDATE)
        windowUpdateStreamIds.add(windowUpdate.streamId)
        assertThat(windowUpdate.windowSizeIncrement).isEqualTo(windowUpdateThreshold.toLong())
      }
      // connection
      assertThat(windowUpdateStreamIds).contains(0)
      // stream
      assertThat(windowUpdateStreamIds).contains(3)
    }
  }