public void ExplicitRelease()
{
int onnext = 0;
Exception e = null;
bool isCompleted = false;
var observable = new OnDemandObservable <int>();
var dispose = observable.AsVeryWeakObservable()
.Subscribe(new DelegateObserver <int>(i => onnext += i, ex => e = ex, () => { isCompleted = true; }));
observable.OnNext(3);
onnext.Is(3);
observable.OnError(E);
e.IsNotNull();
observable.OnCompleted();
isCompleted.IsTrue();
// reset values.
e = null;
isCompleted = false;
// disposing to unsubscribe
dispose.Dispose();
observable.OnNext(6);
onnext.Is(3); // it should not be notified.
observable.OnError(E);
e.IsNull();
observable.OnCompleted();
isCompleted.IsFalse();
}
public void ImplicitReleaseByLostObserver()
{
int onnext = 0;
Exception e = null;
bool isCompleted = false;
var observable = new OnDemandObservable <int>();
IDisposable disposable = null;
WeakReference <IObserver <int> > weak = null;
void exec()
{
var o = new DelegateObserver <int>(i => onnext += i, ex => e = ex, () => { isCompleted = true; });
disposable = observable.AsVeryWeakObservable().Subscribe(o);
weak = new WeakReference <IObserver <int> >(o, true);
};
// execute inner method.
exec();
observable.OnNext(3);
onnext.Is(3);
observable.OnError(E);
Assert.NotNull(e);
observable.OnCompleted();
isCompleted.IsTrue();
// reset values.
e = null;
isCompleted = false;
// Force GC.
GC.Collect(0, GCCollectionMode.Forced);
GC.WaitForPendingFinalizers();
GC.Collect(0, GCCollectionMode.Forced); // just to be sure
System.Threading.Tasks.Task.Delay(100).Wait();
observable.OnNext(6);
onnext.Is(3); // it should not be notified.
observable.OnError(E);
e.IsNull();
observable.OnCompleted();
isCompleted.IsFalse();
}
public void KeepReferences()
{
int onnext = 0;
Exception e = null;
bool isCompleted = false;
var observable = new OnDemandObservable <int>();
var observer = new DelegateObserver <int>(i => onnext += i, ex => e = ex, () => { isCompleted = true; });
var dispose = observable.AsVeryWeakObservable().Subscribe(observer);
observable.OnNext(3);
onnext.Is(3);
observable.OnError(E);
e.IsNotNull();
observable.OnCompleted();
isCompleted.IsTrue();
// reset values.
e = null;
isCompleted = false;
// Force GC.
GC.Collect(0, GCCollectionMode.Forced);
GC.WaitForPendingFinalizers();
GC.Collect(0, GCCollectionMode.Forced);
System.Threading.Tasks.Task.Delay(100).Wait();
observable.OnNext(6);
onnext.Is(9); // to be notified
observable.OnError(E);
e.IsNotNull();
observable.OnCompleted();
isCompleted.IsTrue();
}