class Copilot ...
    case ReadyToGo ⇒
      implicit val timeout = Timeout(100 millis)
      pilot = Await.result[ActorRef](context.actorSelection(s"../$pilotName").resolveOne(), timeout.duration)
      context.watch(pilot)
  ...
}

class PilotsSpec ...
  def pilotsReadyToGo(): ActorRef = {
    val a = system.actorOf(Props(new IsolatedStopSupervisor with OneForOneStrategyFactory {
      def childStarter(): Unit = {
        context.actorOf(Props(new FakePilot()), pilotName)
        context.actorOf(Props(new Copilot(testActor, nilActor)), copilotName)
      }
    }), "pilots")
    Await.result(a ? IsolatedLifeCycleSupervisor.WaitForStart, askTimeout.duration)
    system.actorSelection(copilotPath) ! Pilots.ReadyToGo
    a
  }

  "Copilot" should {
    "take control when the pilot dies" in {
      pilotsReadyToGo()
      // race condition here?
      system.actorSelection(pilotPath) ! PoisonPill
      expectMsg(GiveMeControl)
      val ref = Await.result[ActorRef](system.actorSelection(copilotPath).resolveOne(), 100000 millis)
      lastSender should be(ref)
    }
  }
}