What's the story of ActorTestKit?

hseeberger · March 19, 2018, 11:40am

ActorTestKit seems to not create an untyped system, so I run into issues when adapting the typed system to an untyped, e.g. for Http() or such.

Are you planing to change ActorTestKit such that it is based upon an untyped system? Or should there be another trait for that purpose?

patriknw · March 19, 2018, 2:14pm

That must be something else, it’s an untyped ActorSystem underneath.

github.com

akka/akka/blob/v2.5.11/akka-testkit-typed/src/main/scala/akka/testkit/typed/scaladsl/ActorTestKit.scala#L75


 * Configuration the actor system is created with, override to customize, or pass to constructor
 * if using [[ActorTestKit]] rather than [[ActorTestKit]]
 */
def config: Config = ActorTestKit.noConfigSet


/**
 * TestKit settings used in the tests, override or provide custom config to customize
 */
protected implicit def testkitSettings = TestKitSettings(system)


private val internalSystem: ActorSystem[ActorTestKitGuardian.TestKitCommand] =
  if (config eq ActorTestKit.noConfigSet) ActorSystem(ActorTestKitGuardian.testKitGuardian, name)
  else ActorSystem(ActorTestKitGuardian.testKitGuardian, name, config)


implicit final def system: ActorSystem[Nothing] = internalSystem


implicit def scheduler = system.scheduler
private val childName: Iterator[String] = Iterator.from(0).map(_.toString)


implicit val timeout = testkitSettings.DefaultTimeout

github.com

akka/akka/blob/v2.5.11/akka-actor-typed/src/main/scala/akka/actor/typed/ActorSystem.scala#L219


                              guardianProps:    Props                    = Props.empty,
                              config:           Option[Config]           = None,
                              classLoader:      Option[ClassLoader]      = None,
                              executionContext: Option[ExecutionContext] = None): ActorSystem[T] = {


  Behavior.validateAsInitial(guardianBehavior)
  require(Behavior.isAlive(guardianBehavior))
  val cl = classLoader.getOrElse(akka.actor.ActorSystem.findClassLoader())
  val appConfig = config.getOrElse(ConfigFactory.load(cl))
  val setup = ActorSystemSetup(BootstrapSetup(classLoader, config, executionContext))
  val untyped = new a.ActorSystemImpl(name, appConfig, cl, executionContext,
    Some(PropsAdapter(() ⇒ guardianBehavior, guardianProps, isGuardian = true)), setup)
  untyped.start()


  untyped.guardian ! GuardianActorAdapter.Start
  ActorSystemAdapter.AdapterExtension(untyped).adapter
}


/**
 * Wrap an untyped [[akka.actor.ActorSystem]] such that it can be used from
 * Akka Typed [[Behavior]].

I was thinking it could be https://github.com/akka/akka-http/issues/1873 but that is fixed in 10.1.0. Can you share error message and stack trace?

hseeberger · March 19, 2018, 3:59pm

Ah, yes. Was using BehaviorTestKit. Sorry for the confusion.

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What's the story of ActorTestKit?

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