WeakReference SubscribeUnsubsribeCoreAlloc(EventOwner e, object sender, PropertyChangedEventArgs args, Action raise,
Action <EventOwner, EventArgs> raiseMyEvent1, Action <EventOwner, object, EventArgs> raiseMyEvent2,
Action <Subscriber, EventOwner> subscribe, Action <Subscriber, EventOwner> subscribeTwice, Action <Subscriber, EventOwner> unsubscribe)
{
var s = new Subscriber();
subscribe(s, e);
raise();
Assert.AreEqual(sender, s.Sender);
Assert.AreEqual(args, s.E);
Assert.AreEqual(1, s.Count);
raise();
Assert.AreEqual(sender, s.Sender);
Assert.AreEqual(args, s.E);
Assert.AreEqual(2, s.Count);
s.Clear();
subscribe(s, e);
raise();
Assert.AreEqual(sender, s.Sender);
Assert.AreEqual(args, s.E);
Assert.AreEqual(2, s.Count);
s.Clear();
unsubscribe(s, e);
raise();
Assert.AreEqual(sender, s.Sender);
Assert.AreEqual(args, s.E);
Assert.AreEqual(1, s.Count);
s.Clear();
unsubscribe(s, e);
raise();
Assert.AreEqual(null, s.Sender);
Assert.AreEqual(null, s.E);
Assert.AreEqual(0, s.Count);
s.Clear();
subscribeTwice(s, e);
raise();
Assert.AreEqual(sender, s.Sender);
Assert.AreEqual(args, s.E);
Assert.AreEqual(2, s.Count);
unsubscribe(s, e);
unsubscribe(s, e);
unsubscribe(s, e);
subscribe(s, e);
return(new WeakReference(s));
}
void SubscribeUnsubsribeCore(bool passSender, Action <EventOwner, EventArgs> raiseMyEvent1, Action <EventOwner, object, EventArgs> raiseMyEvent2,
Action <Subscriber, EventOwner> subscribe, Action <Subscriber, EventOwner> subscribeTwice, Action <Subscriber, EventOwner> unsubscribe)
{
var e = new EventOwner();
var s = new Subscriber();
var sender = passSender ? new object() : e;
var args = new PropertyChangedEventArgs("Test");
Action raise = () => {
if (passSender)
{
raiseMyEvent2(e, sender, args);
}
else
{
raiseMyEvent1(e, args);
}
};
subscribe(s, e);
raise();
Assert.AreEqual(sender, s.Sender);
Assert.AreEqual(args, s.E);
Assert.AreEqual(1, s.Count);
raise();
Assert.AreEqual(sender, s.Sender);
Assert.AreEqual(args, s.E);
Assert.AreEqual(2, s.Count);
s.Clear();
subscribe(s, e);
raise();
Assert.AreEqual(sender, s.Sender);
Assert.AreEqual(args, s.E);
Assert.AreEqual(2, s.Count);
s.Clear();
unsubscribe(s, e);
raise();
Assert.AreEqual(sender, s.Sender);
Assert.AreEqual(args, s.E);
Assert.AreEqual(1, s.Count);
s.Clear();
unsubscribe(s, e);
raise();
Assert.AreEqual(null, s.Sender);
Assert.AreEqual(null, s.E);
Assert.AreEqual(0, s.Count);
s.Clear();
subscribeTwice(s, e);
raise();
Assert.AreEqual(sender, s.Sender);
Assert.AreEqual(args, s.E);
Assert.AreEqual(2, s.Count);
unsubscribe(s, e);
unsubscribe(s, e);
unsubscribe(s, e);
subscribe(s, e);
WeakReference sRef = new WeakReference(s);
s = null;
MemoryLeaksHelper.CollectOptional(sRef);
MemoryLeaksHelper.EnsureCollected(sRef);
raise();
}