public void Getting_an_unknown_child_that_exists_in_extraNames_Should_return_nobody()
{
var props = Props.Create<GuardianActor>(new OneForOneStrategy(e => Directive.Stop));
var rootGuardianActorRef = new RootGuardianActorRef((ActorSystemImpl)Sys, props, _dispatcher, () => Sys.Mailboxes.CreateMailbox(props, null), ActorRefs.Nobody, _rootActorPath, _deadLetters, _emptyExtraNames);
var actorRef = rootGuardianActorRef.GetSingleChild("unknown-child");
Assert.Same(ActorRefs.Nobody, actorRef);
}