public void FilteredHandlerLifeCycleTest()
{
var handler1Called = false;
var handler2Called = false;
var handler3Called = false;
var publisher = new TestEventPublisher();
var listener = new CollectionChangedEventListener(publisher);
//------------------
listener.RegisterHandler(NotifyCollectionChangedAction.Add, (sender, e) => { e.Action.Is(NotifyCollectionChangedAction.Add); handler1Called = true; });
listener.RegisterHandler(NotifyCollectionChangedAction.Remove, (sender, e) => { e.Action.Is(NotifyCollectionChangedAction.Remove); handler2Called = true; });
listener.RegisterHandler(NotifyCollectionChangedAction.Add, (sender, e) => { e.Action.Is(NotifyCollectionChangedAction.Add); handler3Called = true; });
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Remove, null);
handler1Called.Is(true);
handler2Called.Is(true);
handler3Called.Is(true);
//------------------
handler1Called = false;
handler2Called = false;
handler3Called = false;
listener.Dispose();
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Remove, null);
handler1Called.Is(false);
handler2Called.Is(false);
handler3Called.Is(false);
}
public void FilteredHandlerLifeCycleTest()
{
var handler1Called = false;
var handler2Called = false;
var handler3Called = false;
var publisher = new TestEventPublisher();
var listener = new CollectionChangedEventListener(publisher);
//------------------
listener.RegisterHandler(NotifyCollectionChangedAction.Add, (sender, e) => { e.Action.Is(NotifyCollectionChangedAction.Add); handler1Called = true; });
listener.RegisterHandler(NotifyCollectionChangedAction.Remove, (sender, e) => { e.Action.Is(NotifyCollectionChangedAction.Remove); handler2Called = true; });
listener.RegisterHandler(NotifyCollectionChangedAction.Add, (sender, e) => { e.Action.Is(NotifyCollectionChangedAction.Add); handler3Called = true; });
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Remove, null);
handler1Called.Is(true);
handler2Called.Is(true);
handler3Called.Is(true);
//------------------
handler1Called = false;
handler2Called = false;
handler3Called = false;
listener.Dispose();
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Remove, null);
handler1Called.Is(false);
handler2Called.Is(false);
handler3Called.Is(false);
}
public HandlerMemoryLeakTestClass(INotifyCollectionChanged publisher)
{
Listener = new CollectionChangedEventListener(publisher);
// This handler refers "this".
NotifyCollectionChangedEventHandler handler = (sender, e) => { ToString(); };
Listener.RegisterHandler(handler);
Listener.RegisterHandler(NotifyCollectionChangedAction.Reset, handler);
}
public void SourceReferenceMemoryLeakTest()
{
var handler1Success = false;
var publisherStrongReference = new TestEventPublisher();
var publisherWeakReference = new WeakReference <TestEventPublisher>(publisherStrongReference);
var listener = new CollectionChangedEventListener(publisherStrongReference);
listener.RegisterHandler((sender, e) => handler1Success = true);
publisherStrongReference.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
handler1Success.Is(true);
listener.Dispose();
publisherStrongReference = null;
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
TestEventPublisher resultPublisher = null;
publisherWeakReference.TryGetTarget(out resultPublisher).Is(false);
resultPublisher.IsNull();
}
public void BasicConstructorLifeCycleTest()
{
var listenerSuccess = false;
var publisher = new TestEventPublisher();
var listener = new CollectionChangedEventListener(publisher, (sender, e) => listenerSuccess = true);
//------------------
listenerSuccess.Is(false);
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
listenerSuccess.Is(true);
//------------------
listenerSuccess = false;
listener.Dispose();
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
listenerSuccess.Is(false);
try
{
listener.RegisterHandler((sender, e) => listenerSuccess = true);
}
catch (Exception e)
{
e.GetType().Is(typeof(ObjectDisposedException));
}
}
public void BasicConstructorLifeCycleTest()
{
var listenerSuccess = false;
var publisher = new TestEventPublisher();
var listener = new CollectionChangedEventListener(publisher, (sender, e) => listenerSuccess = true);
//------------------
listenerSuccess.Is(false);
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
listenerSuccess.Is(true);
//------------------
listenerSuccess = false;
listener.Dispose();
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
listenerSuccess.Is(false);
try
{
listener.RegisterHandler((sender, e) => listenerSuccess = true);
}
catch (Exception e)
{
e.GetType().Is(typeof(ObjectDisposedException));
}
}
public void MultipleHandlerLifeCycleTest()
{
var handler1Success = false;
var handler2Success = false;
var publisher = new TestEventPublisher();
var listener = new CollectionChangedEventListener(publisher);
//------------------
handler1Success.Is(false);
handler2Success.Is(false);
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
handler1Success.Is(false);
handler2Success.Is(false);
//------------------
listener.RegisterHandler((sender, e) => handler1Success = true);
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
handler1Success.Is(true);
handler2Success.Is(false);
//------------------
handler1Success = false;
handler2Success = false;
listener.RegisterHandler((sender, e) => handler2Success = true);
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
handler1Success.Is(true);
handler2Success.Is(true);
//------------------
handler1Success = false;
handler2Success = false;
listener.Dispose();
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
handler1Success.Is(false);
handler2Success.Is(false);
}
public void MultipleHandlerLifeCycleTest()
{
var handler1Success = false;
var handler2Success = false;
var publisher = new TestEventPublisher();
var listener = new CollectionChangedEventListener(publisher);
//------------------
handler1Success.Is(false);
handler2Success.Is(false);
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
handler1Success.Is(false);
handler2Success.Is(false);
//------------------
listener.RegisterHandler((sender, e) => handler1Success = true);
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
handler1Success.Is(true);
handler2Success.Is(false);
//------------------
handler1Success = false;
handler2Success = false;
listener.RegisterHandler((sender, e) => handler2Success = true);
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
handler1Success.Is(true);
handler2Success.Is(true);
//------------------
handler1Success = false;
handler2Success = false;
listener.Dispose();
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
handler1Success.Is(false);
handler2Success.Is(false);
}
public void MultiThreadHandlerTest()
{
var publisher = new TestEventPublisher();
var listener = new CollectionChangedEventListener(publisher);
var handlerCalledCount = 0;
var parentTask = new Task(() =>
{
var tf = new TaskFactory(TaskCreationOptions.AttachedToParent, TaskContinuationOptions.AttachedToParent);
for (int i = 0; i < 50; i++)
{
tf.StartNew(() =>
{
for (int f = 0; f < 500; f++)
{
listener.RegisterHandler(NotifyCollectionChangedAction.Add, (sender, e) => { e.Action.Is(NotifyCollectionChangedAction.Add); handlerCalledCount++; });
}
});
}
});
parentTask.Start();
parentTask.Wait();
handlerCalledCount.Is(0);
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
handlerCalledCount.Is(25000);
handlerCalledCount = 0;
listener.Dispose();
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
handlerCalledCount.Is(0);
}
public static ReadOnlyDispatcherCollection <TViewModel> CreateReadOnlyDispatcherCollection <TModel, TViewModel>(
[NotNull] IList <TModel> source, [NotNull] Func <TModel, TViewModel> converter,
[NotNull] Dispatcher dispatcher)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (converter == null)
{
throw new ArgumentNullException(nameof(converter));
}
if (dispatcher == null)
{
throw new ArgumentNullException(nameof(dispatcher));
}
if (!(source is INotifyCollectionChanged sourceAsNotifyCollection))
{
throw new ArgumentException("sourceがINotifyCollectionChangedを実装していません");
}
var initCollection = new ObservableCollection <TViewModel>();
foreach (var model in source)
{
initCollection.Add(converter(model));
}
var target = new DispatcherCollection <TViewModel>(initCollection, dispatcher);
var result = new ReadOnlyDispatcherCollection <TViewModel>(target);
var collectionChangedListener = new CollectionChangedEventListener(sourceAsNotifyCollection);
result.EventListeners.Add(collectionChangedListener);
collectionChangedListener.RegisterHandler((sender, e) =>
{
if (e == null)
{
throw new ArgumentNullException(nameof(e));
}
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
var vm = converter((TModel)e.NewItems?[0]);
InvokeOnDispatcher(() => target.Insert(e.NewStartingIndex, vm), dispatcher);
break;
case NotifyCollectionChangedAction.Move:
InvokeOnDispatcher(() => target.Move(e.OldStartingIndex, e.NewStartingIndex), dispatcher);
break;
case NotifyCollectionChangedAction.Remove:
if (typeof(IDisposable).IsAssignableFrom(typeof(TViewModel)))
{
((IDisposable)target[e.OldStartingIndex])?.Dispose();
}
InvokeOnDispatcher(() => target.RemoveAt(e.OldStartingIndex), dispatcher);
break;
case NotifyCollectionChangedAction.Replace:
if (typeof(IDisposable).IsAssignableFrom(typeof(TViewModel)))
{
((IDisposable)target[e.NewStartingIndex])?.Dispose();
}
var replaceVm = converter((TModel)e.NewItems?[0]);
InvokeOnDispatcher(() => target[e.NewStartingIndex] = replaceVm, dispatcher);
break;
case NotifyCollectionChangedAction.Reset:
if (typeof(IDisposable).IsAssignableFrom(typeof(TViewModel)))
{
foreach (var item in target.OfType <IDisposable>())
{
item.Dispose();
}
}
InvokeOnDispatcher(target.Clear, dispatcher);
break;
default:
throw new ArgumentException();
}
});
return(result);
}
public void SourceReferenceMemoryLeakTest()
{
var handler1Success = false;
var publisherStrongReference = new TestEventPublisher();
var publisherWeakReference = new WeakReference<TestEventPublisher>(publisherStrongReference);
var listener = new CollectionChangedEventListener(publisherStrongReference);
listener.RegisterHandler((sender, e) => handler1Success = true);
publisherStrongReference.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
handler1Success.Is(true);
listener.Dispose();
publisherStrongReference = null;
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
TestEventPublisher resultPublisher = null;
publisherWeakReference.TryGetTarget(out resultPublisher).Is(false);
resultPublisher.IsNull();
}
public void MultiThreadHandlerTest()
{
var publisher = new TestEventPublisher();
var listener = new CollectionChangedEventListener(publisher);
var handlerCalledCount = 0;
var parentTask = new Task(() =>
{
var tf = new TaskFactory(TaskCreationOptions.AttachedToParent, TaskContinuationOptions.AttachedToParent);
for (int i = 0; i < 50; i++)
{
tf.StartNew(() =>
{
for (int f = 0; f < 500; f++)
{
listener.RegisterHandler(NotifyCollectionChangedAction.Add, (sender, e) => { e.Action.Is(NotifyCollectionChangedAction.Add); handlerCalledCount++; });
}
});
}
});
parentTask.Start();
parentTask.Wait();
handlerCalledCount.Is(0);
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
handlerCalledCount.Is(25000);
handlerCalledCount = 0;
listener.Dispose();
publisher.RaiseCollectionChanged(NotifyCollectionChangedAction.Add, null);
handlerCalledCount.Is(0);
}
public HandlerMemoryLeakTestClass(INotifyCollectionChanged publisher)
{
Listener = new CollectionChangedEventListener(publisher);
// This handler refers "this".
NotifyCollectionChangedEventHandler handler = (sender, e) => { ToString(); };
Listener.RegisterHandler(handler);
Listener.RegisterHandler(NotifyCollectionChangedAction.Reset, handler);
}
public static ReadOnlyDispatcherCollection <TViewModel> CreateReadOnlyDispatcherCollection <TModel, TViewModel>(IList <TModel> source, Func <TModel, TViewModel> converter, Dispatcher dispatcher)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
var sourceAsNotifyCollection = source as INotifyCollectionChanged;
if (sourceAsNotifyCollection == null)
{
throw new ArgumentException("sourceがINotifyCollectionChangedを実装していません");
}
var initCollection = new ObservableCollection <TViewModel>();
var internalLock = new object();
lock (internalLock)
{
var target = new DispatcherCollection <TViewModel>(initCollection, dispatcher);
var result = new ReadOnlyDispatcherCollection <TViewModel>(target);
var collectionChangedListener = new CollectionChangedEventListener(sourceAsNotifyCollection);
result.EventListeners.Add(collectionChangedListener);
collectionChangedListener.RegisterHandler((sender, e) =>
{
lock (internalLock)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
target.Insert(e.NewStartingIndex, converter((TModel)e.NewItems[0]));
break;
case NotifyCollectionChangedAction.Move:
target.Move(e.OldStartingIndex, e.NewStartingIndex);
break;
case NotifyCollectionChangedAction.Remove:
if (typeof(IDisposable).IsAssignableFrom(typeof(TViewModel)))
{
((IDisposable)target[e.OldStartingIndex]).Dispose();
}
target.RemoveAt(e.OldStartingIndex);
break;
case NotifyCollectionChangedAction.Replace:
if (typeof(IDisposable).IsAssignableFrom(typeof(TViewModel)))
{
((IDisposable)target[e.NewStartingIndex]).Dispose();
}
target[e.NewStartingIndex] = converter((TModel)e.NewItems[0]);
break;
case NotifyCollectionChangedAction.Reset:
if (typeof(IDisposable).IsAssignableFrom(typeof(TViewModel)))
{
foreach (IDisposable item in target)
{
item.Dispose();
}
}
target.Clear();
break;
default:
throw new ArgumentException();
}
}
});
foreach (var model in source)
{
initCollection.Add(converter(model));
}
return(result);
}
}
