public void When_same_event_is_pulled_and_pushed_it_is_processed_only_once()
{
var eventCollection = new TestEventCollection();
var pushSource = new FakePushSource();
var pullSource = new FakePullSource();
pullSource.PrepareSlice(eventCollection.GenerateEvent());
var selector = new EventSourceSelector(pullSource, pushSource, new FakeEventIdentityExtractor());
selector.Event += (s, e) => eventCollection.MarkAsProcessed(e.Event);
var duplicate = eventCollection.GenerateEvent();
pushSource.Started += (s, e) => pullSource.PrepareSlice(duplicate);
selector.Start();
pushSource.PushEvent(duplicate);
selector.Stop();
eventCollection.VerifyAllEventsProcessed();
}
public void When_some_events_are_pulled_after_push_is_started_they_are_processed_before_pushed_events()
{
var eventCollection = new TestEventCollection();
var pushSource = new FakePushSource();
var pullSource = new FakePullSource();
pullSource.PrepareSlice(eventCollection.GenerateEvent());
var selector = new EventSourceSelector(pullSource, pushSource, new FakeEventIdentityExtractor());
selector.Event += (s, e) => eventCollection.MarkAsProcessed(e.Event);
var pullAfterPushEvent = eventCollection.GenerateEvent();
pushSource.Started += (s, e) => pullSource.PrepareSlice(pullAfterPushEvent);
selector.Start();
pushSource.PushEvent(eventCollection.GenerateEvent());
selector.Stop();
eventCollection.VerifyAllEventsProcessed();
}
public void When_there_are_no_outstanding_events_it_switches_to_push_source()
{
var eventCollection = new TestEventCollection();
var pushSource = new FakePushSource();
var pullSource = new FakePullSource();
var selector = new EventSourceSelector(pullSource, pushSource, new FakeEventIdentityExtractor());
selector.Event += (s, e) => eventCollection.MarkAsProcessed(e.Event);
selector.Start();
pushSource.PushEvent(eventCollection.GenerateEvent());
selector.Stop();
eventCollection.VerifyAllEventsProcessed();
}
public void When_some_events_are_pulled_after_push_is_started_they_are_processed_before_pushed_events()
{
var eventCollection = new TestEventCollection();
var pushSource = new FakePushSource();
var pullSource = new FakePullSource();
pullSource.PrepareSlice(eventCollection.GenerateEvent());
var selector = new EventSourceSelector(pullSource, pushSource, new FakeEventIdentityExtractor());
selector.Event += (s, e) => eventCollection.MarkAsProcessed(e.Event);
var pullAfterPushEvent = eventCollection.GenerateEvent();
pushSource.Started += (s, e) => pullSource.PrepareSlice(pullAfterPushEvent);
selector.Start();
pushSource.PushEvent(eventCollection.GenerateEvent());
selector.Stop();
eventCollection.VerifyAllEventsProcessed();
}
public void When_same_event_is_pulled_and_pushed_it_is_processed_only_once()
{
var eventCollection = new TestEventCollection();
var pushSource = new FakePushSource();
var pullSource = new FakePullSource();
pullSource.PrepareSlice(eventCollection.GenerateEvent());
var selector = new EventSourceSelector(pullSource, pushSource, new FakeEventIdentityExtractor());
selector.Event += (s, e) => eventCollection.MarkAsProcessed(e.Event);
var duplicate = eventCollection.GenerateEvent();
pushSource.Started += (s, e) => pullSource.PrepareSlice(duplicate);
selector.Start();
pushSource.PushEvent(duplicate);
selector.Stop();
eventCollection.VerifyAllEventsProcessed();
}
public void When_there_are_some_outstanding_events_it_pulls_them_and_then_switches_to_push_source()
{
var eventCollection = new TestEventCollection();
var pushSource = new FakePushSource();
var pullSource = new FakePullSource();
pullSource.PrepareSlice(eventCollection.GenerateEvent());
var selector = new EventSourceSelector(pullSource, pushSource, new FakeEventIdentityExtractor());
selector.Event += (s, e) => eventCollection.MarkAsProcessed(e.Event);
selector.Start();
pushSource.PushEvent(eventCollection.GenerateEvent());
selector.Stop();
eventCollection.VerifyAllEventsProcessed();
}