public void Setup()
{
_target = new MessageAggregator();
_listenerA = new ListenerA();
_listenerAB = new ListenerAB();
}
public async Task Publish_Removes_Zombie_References()
{
_target.AddListener(_listenerA);
_target.AddListener(_listenerAB);
_listenerA = null; // De-reference the listener
GC.Collect(0); // Force the Garbage Collector into action.
await _target.Publish(new ObservableA()).ConfigureAwait(false);
_target.Subscriptions.TryGetValue(typeof(IListenFor <ObservableA>), out var subscribers);
Assert.IsNotNull(subscribers);
Assert.AreEqual(1, subscribers.Count);
}