@Test fun clientEmptyPing() {
    clientWriter.writePing(EMPTY)
    assertData("898060b420bb")
  }

  @Test fun serverPingWithPayload() {
    serverWriter.writePing("Hello".encodeUtf8())
    assertData("890548656c6c6f")
  }

  @Test fun clientPingWithPayload() {
    clientWriter.writePing("Hello".encodeUtf8())
    assertData("898560b420bb28d14cd70f")
  }

  @Test fun serverEmptyPong() {