public void ExplicitRelease()
{
int onnext = 0;
Exception e = null;
bool isCompleted = false;
var observable = new OnDemandObservable <int>();
var dispose = observable.AsWeakObservable().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;
// 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.AsWeakObservable().Subscribe(o);
weak = new WeakReference <IObserver <int> >(o, true);
};
// execute inner method.
exec();
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); // just to be sure
System.Threading.Tasks.Task.Delay(100).Wait();
// It should be notified. Because reference of IDisposable is alive and not unsubscribe automatically,
// and so subscription is valid. Reference of IObserver<T> is kept internally, and was not collected by
// the garbage collector.
observable.OnNext(6);
onnext.Is(9);
observable.OnError(E);
e.IsNotNull();
observable.OnCompleted();
isCompleted.IsTrue();
}
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.VeryWeakSubscribe(o);
weak = new WeakReference <IObserver <int> >(o, true);
};
// execute inner method.
exec();
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); // 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 NoSpecifiedDelegates()
{
var testObservable = new OnDemandObservable <int>();
var observer = new DelegateObserver <int>();
testObservable.Subscribe(observer);
testObservable.OnNext(1);
testObservable.OnError(new ArgumentException());
testObservable.OnCompleted();
}
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.WeakSubscribe(observer);
// observer = null;
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); // just to be sure.
System.Threading.Tasks.Task.Delay(100).Wait();
observable.OnNext(6);
onnext.Is(9); // it should be notified.
observable.OnError(E);
e.IsNotNull();
observable.OnCompleted();
isCompleted.IsTrue();
}
public void SpecifyFull()
{
int t = 0;
bool completed = false;
Exception ee = null;
var testObservable = new OnDemandObservable <int>();
var observer = new DelegateObserver <int>(i => t = i, exception => ee = exception, () => completed = true);
testObservable.Subscribe(observer);
testObservable.OnNext(1);
t.Is(1);
testObservable.OnError(new Exception());
ee.IsNotNull();
testObservable.OnCompleted();
completed.IsTrue();
}