@DisplayName("connects to server")
@Test
void connect() {

  InetSocketAddress address = InetSocketAddress.createUnresolved("localhost", 0);
  TcpServerTransport serverTransport = TcpServerTransport.create(address);
  serverTransport
      .start(duplexConnection -> Mono.empty())
      .flatMap(context -> TcpClientTransport.create(context.address()).connect())
      .as(StepVerifier::create)
      .expectNextCount(1)
      .verifyComplete();
}