internal void EventDispatching(
Type eventType,
string[] expectedInvocations,
MessageDispatcher dispatcher,
Messenger m,
Messenger sub,
List <string> invocations
)
{
GIVEN["a Messenger with some registrations a subordinate Messenger"] = () => {
invocations = new List <string>();
dispatcher = new MessageDispatcher(m = new Messenger());
m.Apply <DerivedEvent>(e => invocations.Add("ROOT-DE"));
m.Register(sub = new Messenger());
m.Apply <BaseEvent>(e => invocations.Add("ROOT-BE"));
sub.Apply <DerivedEvent>(e => invocations.Add("SUB-DE"));
sub.Apply <TestEvent>(e => invocations.Add("SUB-TE"));
};
WHEN["applying the event"] = () => m.ApplyChange((IEvent)Activator.CreateInstance(eventType));
THEN["the expected handlers are invoked"] = () => invocations.Should().BeEquivalentTo(expectedInvocations);
WHEN["a subordinate Messenger applies the event"] = () => {
invocations.Clear();
sub.ApplyChange((IEvent)Activator.CreateInstance(eventType));
};
THEN["the same handlers are invoked"] = () => invocations.Should().BeEquivalentTo(expectedInvocations);
}