public void TestMultipleUnlistenWeak()
{
StreamSink <int> s = Stream.CreateSink <int>();
List <int> @out = new List <int>();
((Action)(() =>
{
// ReSharper disable once UnusedVariable
IWeakListener l = s.ListenWeak(@out.Add);
s.Send(1);
l.Unlisten();
l.Unlisten();
s.Send(2);
l.Unlisten();
}))();
s.Send(3);
s.Send(4);
Assert.AreEqual(1, @out.Count);
}
internal IStrongListener ListenImpl(Action <T> handler)
{
IWeakListener innerListener = this.ListenWeakImpl(handler);
StrongListener listener = null;
listener = new StrongListener(
() =>
{
innerListener.Unlisten();
// ReSharper disable AccessToModifiedClosure
if (listener != null)
{
lock (this.KeepListenersAlive)
{
this.KeepListenersAlive.StopKeepingListenerAlive(listener);
}
}
// ReSharper restore AccessToModifiedClosure
},
innerListener);
lock (this.KeepListenersAlive)
{
this.KeepListenersAlive.KeepListenerAlive(listener);
}
return(listener);
}