public void When_a_dead_actor_is_watched_Then_an_WatchedActorTerminated_message_is_sent_to_watcher()
{
var system = new TestActorSystem();
system.Start();
var mailbox = new TestMailbox(system.CreateDefaultMailbox());
var watchedActor = system.CreateActor(ActorCreationProperties.Create <StoppingActor>(), "WatchedActor");
var watcherProps = new DelegateActorCreationProperties(() => new WatchingActor(watchedActor))
{
MailboxCreator = () => mailbox
};
watchedActor.Send("stop", null);
var watcher = system.CreateActor(watcherProps, "Watcher");
mailbox.ClearEnqueuedSystemMessages();
mailbox.ClearEnqueuedMessages();
watcher.Send("watch", null);
var watchSystemMessages = mailbox.GetEnquedSystemMessagesOfType <ActorTerminated>();
watchSystemMessages.Should().HaveCount(1);
watchSystemMessages[0].TerminatedActor.Should().BeSameAs(watchedActor);
var watchMessages = mailbox.GetEnquedMessagesOfType <WatchedActorTerminated>();
watchMessages.Should().HaveCount(1);
watchMessages[0].TerminatedActor.Should().BeSameAs(watchedActor);
}
public void When_actor_Stops_Then_it_sends_ActorTerminated_message_to_supervisor()
{
var system = new TestActorSystem();
system.Start();
var parentMailbox = new TestMailbox(system.CreateDefaultMailbox());
ParentWithFailingChildActor parentInstance = null;
var props = new DelegateActorCreationProperties(() => parentInstance = new ParentWithFailingChildActor())
{
MailboxCreator = () => parentMailbox
};
var actor = system.CreateActor(props, "Parent");
actor.Send("A trigger message that will cause actor to fail", null);
var actorsTerminated = parentMailbox.GetStateChangesForEnquingSystemMessagesOfType <ActorTerminated>().ToList();
actorsTerminated.Should().HaveCount(1).And.ContainSingle(s => ((ActorTerminated)s.GetLastEnqueuedSystemMessage().Message).TerminatedActor == parentInstance.FailingChild);
}
public void When_an_actor_crashes_during_handling_message_Then_the_actors_mailbox_gets_suspended()
{
var system = new TestActorSystem();
system.Start();
var mailbox = new TestMailbox(system.CreateDefaultMailbox());
var props = new DelegateActorCreationProperties(() => AnonymousActor.Create <object>(_ => { throw new Exception(); }))
{
MailboxCreator = () => mailbox
};
var actor = system.CreateActor(props);
actor.Send("A trigger message that will cause actor to fail", null);
var suspendCalls = mailbox.GetStateChangesFor(TestMailbox.StateChange.Suspend);
suspendCalls.Count.Should().Be(1);
}
public void When_watching_another_actor_Then_a_Watch_message_is_sent_to_that_actor()
{
var system = new TestActorSystem();
system.Start();
var mailbox = new TestMailbox(system.CreateDefaultMailbox());
var watchedActorProps = new DelegateActorCreationProperties(() => AnonymousActor.Create <object>(_ => { }))
{
MailboxCreator = () => mailbox
};
var watchedActor = system.CreateActor(watchedActorProps, "WatchedActor");
var watcher = system.CreateActor(ActorCreationProperties.Create(() => new WatchingActor(watchedActor)), "Watcher");
watcher.Send("watch", null);
var watchMessages = mailbox.GetEnquedSystemMessagesOfType <WatchActor>();
watchMessages.Should().HaveCount(1);
watchMessages[0].Watcher.Should().BeSameAs(watcher);
}
public void Given_supervisor_that_restarts_all_children_When_child_crashes_Then_all_its_siblings_are_restarted()
{
var system = new TestActorSystem();
system.Start();
var failingChildMailbox = new TestMailbox(system.CreateDefaultMailbox());
var childrenMailboxes = Enumerable.Range(1, 10).Select(_ => new TestMailbox(system.CreateDefaultMailbox())).ToList();
var parent = system.CreateActor(ActorCreationProperties.Create(() => new ParentWithFailingChildActor(failingChildMailbox, childrenMailboxes, AllForOneSupervisorStrategy.DefaultAllForOne)));
parent.Send("A trigger message that will cause the child actor to fail", null);
var childRestarts = childrenMailboxes.Select(m => m.GetStateChangesForEnquingSystemMessagesOfType <RecreateActor>()).ToList();
childRestarts.Count.Should().Be(10);
for (int i = 0; i < childRestarts.Count; i++)
{
var suspendCalls = childRestarts[i];
suspendCalls.Count.Should().Be(1, "Mailbox for child " + i + " should have been restarted.");
}
}
public void Given_an_actor_with_children_When_it_crashes_during_handling_message_Then_its_children_terminates_and_sends_ActorTerminated_to_their_parent()
{
//The children get created since their parent gets created
var system = new TestActorSystem();
system.Start();
var mailbox = new TestMailbox(system.CreateDefaultMailbox());
var props = new DelegateActorCreationProperties(() => new ParentWhichFailsWithChildrenActor(2, childName: i => "Child" + i))
{
MailboxCreator = () => mailbox
};
var actor = system.CreateActor(props, "Parent");
actor.Send("A trigger message that will cause actor to fail", null);
var actorTerminatedMessages = mailbox.GetStateChangesForEnquingSystemMessagesOfType <ActorTerminated>();
actorTerminatedMessages.Count.Should().Be(2);
var terminatedActorNames = actorTerminatedMessages.Select(m => ((ActorTerminated)m.GetLastEnqueuedSystemMessage().Message).TerminatedActor.Name).OrderBy(n => n).ToList();
terminatedActorNames.Should().ContainInOrder(new [] { "Child1", "Child2" });
}
public void When_a_child_actor_is_created_Then_it_sends_SuperviseActor_message_to_parent()
{
var system = new TestActorSystem();
system.Start();
var mailbox = new TestMailbox(system.CreateDefaultMailbox());
ParentWithChildActor parent = null;
var parentProps = new DelegateActorCreationProperties(() =>
{
parent = new ParentWithChildActor();
return(parent);
})
{
MailboxCreator = () => mailbox
};
var parentRef = system.CreateActor(parentProps, "Parent");
var stateChanges = mailbox.GetStateChangesForEnquingSystemMessagesOfType <SuperviseActor>();
stateChanges.Count.Should().Be(1);
((SuperviseActor)stateChanges.First().GetLastEnqueuedSystemMessage().Message).ActorToSupervise.Should().BeSameAs(parent.Child);
}
public void Given_an_actor_with_children_When_it_crashes_during_handling_message_Then_its_children_are_stopped()
{
var system = new TestActorSystem();
system.Start();
var childrenMailboxes = Enumerable.Range(1, 10).Select(_ => new TestMailbox(system.CreateDefaultMailbox())).ToList();
var mailbox = new TestMailbox(system.CreateDefaultMailbox());
var props = new DelegateActorCreationProperties(() => new ParentWhichFailsWithChildrenActor(childrenMailboxes))
{
MailboxCreator = () => mailbox
};
var actor = system.CreateActor(props);
actor.Send("A trigger message that will cause actor to fail", null);
var childTerminations = childrenMailboxes.Select(m => m.GetStateChangesForEnquingSystemMessagesOfType <TerminateActor>()).ToList();
childTerminations.Count.Should().Be(10);
for (int i = 0; i < childTerminations.Count; i++)
{
var terminateCalls = childTerminations[i];
terminateCalls.Count.Should().Be(1, "Mailbox for child " + i + " should have been terminated.");
}
}
public void When_an_actor_crashes_during_handling_message_Then_its_children_gets_suspended()
{
var system = new TestActorSystem();
system.Start();
var childrenMailboxes = Enumerable.Range(1, 10).Select(_ => new TestMailbox(system.CreateDefaultMailbox())).ToList();
var parent = system.CreateActor(ActorCreationProperties.Create(() => new ParentWhichFailsWithChildrenActor(childrenMailboxes)));
parent.Send("A trigger message that will cause the parent actor to fail", null);
var childSuspends = childrenMailboxes.Select(m => m.GetStateChangesFor(TestMailbox.StateChange.Suspend)).ToList();
childSuspends.Count.Should().Be(10);
for (int i = 0; i < childSuspends.Count; i++)
{
var suspendCalls = childSuspends[i];
suspendCalls.Count.Should().Be(1, "Mailbox for child " + i + " should have been suspended.");
}
}