scala - akka:如何测试 Actor 是否被停止

Question

我想知道测试 Actor 是否在 akka 中停止的规范方法是什么。这是我目前正在做的一个例子；我担心我把它复杂化了。

import akka.actor.{Terminated, Actor, Props, ActorSystem}
import akka.testkit.TestProbe

class MyActor extends Actor {
  import MyActor._
  override def receive: Receive = {
    case Stop => context.stop(self)
  }
}

object MyActor {
  def props = Props(new MyActor)
  case object Stop
}


object MyActorSpec {

  val system = ActorSystem()
  val myActor = system.actorOf(MyActor.props)
  val testProbe = TestProbe()

  case object MyActorStopped

  val watcher = system.actorOf(Props(new Actor {
    context.watch(myActor)
    override def receive: Actor.Receive = {
      case Terminated(`myActor`) => testProbe.ref ! MyActorStopped
    }
  }))

  myActor ! MyActor.Stop
  testProbe.expectMsg(MyActorStopped)
}

Answer 1

您可以摆脱单独的观察者 Actor ，而直接从 testProbe 观看目标 Actor 。 Actor :

val testProbe = TestProbe()
testProbe watch myActor
myActor ! MyActor.Stop
testProbe.expectTerminated(myActor)

见 here对于 Akka 测试文档的相关部分。