public static T AssertAllStagesStopped <T>(this AkkaSpec spec, Func <T> block, IMaterializer materializer)
{
var impl = materializer as ActorMaterializerImpl;
if (impl == null)
{
return(block());
}
var probe = spec.CreateTestProbe(impl.System);
probe.Send(impl.Supervisor, StreamSupervisor.StopChildren.Instance);
probe.ExpectMsg <StreamSupervisor.StoppedChildren>();
var result = block();
probe.Within(TimeSpan.FromSeconds(5), () =>
{
IImmutableSet <IActorRef> children = ImmutableHashSet <IActorRef> .Empty;
try
{
probe.AwaitAssert(() =>
{
impl.Supervisor.Tell(StreamSupervisor.GetChildren.Instance, probe.Ref);
children = probe.ExpectMsg <StreamSupervisor.Children>().Refs;
if (children.Count != 0)
{
throw new Exception($"expected no StreamSupervisor children, but got {children.Aggregate("", (s, @ref) => s + @ref + ", ")}");
}
});
}
catch
{
children.ForEach(c => c.Tell(StreamSupervisor.PrintDebugDump.Instance));
throw;
}
});
return(result);
}