public void ShouldNotExecuteOnGarbageCollectedFilterReferenceWhenNotKeepAlive()
{
var CompositePresentationEvent = new TestableCompositePresentationEvent <string>();
bool wasCalled = false;
var actionEvent = new ActionHelper()
{
ActionToExecute = () => wasCalled = true
};
ExternalFilter filter = new ExternalFilter();
CompositePresentationEvent.Subscribe(actionEvent.Action, ThreadOption.PublisherThread, false, filter.AlwaysTrueFilter);
CompositePresentationEvent.Publish("testPayload");
Assert.IsTrue(wasCalled);
wasCalled = false;
WeakReference filterReference = new WeakReference(filter);
filter = null;
GC.Collect();
Assert.IsFalse(filterReference.IsAlive);
CompositePresentationEvent.Publish("testPayload");
Assert.IsFalse(wasCalled);
}
public void UnsubscribeShouldNotFailWithNonSubscriber()
{
TestableCompositePresentationEvent <string> compositePresentationEvent = new TestableCompositePresentationEvent <string>();
Action <string> subscriber = delegate { };
compositePresentationEvent.Unsubscribe(subscriber);
}
public void SubscribeDefaultsToPublisherThread()
{
var CompositePresentationEvent = new TestableCompositePresentationEvent <string>();
Action <string> action = delegate { };
var token = CompositePresentationEvent.Subscribe(action, true);
Assert.AreEqual(1, CompositePresentationEvent.BaseSubscriptions.Count);
Assert.AreEqual(typeof(EventSubscription <string>), CompositePresentationEvent.BaseSubscriptions.ElementAt(0).GetType());
}
public void CanSubscribeAndRaiseEvent()
{
TestableCompositePresentationEvent <string> compositePresentationEvent = new TestableCompositePresentationEvent <string>();
bool published = false;
compositePresentationEvent.Subscribe(delegate { published = true; }, ThreadOption.PublisherThread, true, delegate { return(true); });
compositePresentationEvent.Publish(null);
Assert.IsTrue(published);
}
public void SubscribeTakesExecuteDelegateThreadOptionAndFilter()
{
TestableCompositePresentationEvent <string> compositePresentationEvent = new TestableCompositePresentationEvent <string>();
var action = new ActionHelper();
compositePresentationEvent.Subscribe(action.Action);
compositePresentationEvent.Publish("test");
Assert.AreEqual("test", action.ActionArg <string>());
}
public void ContainsShouldSearchByToken()
{
var CompositePresentationEvent = new TestableCompositePresentationEvent <string>();
var emptyAction = new ActionHelper();
var token = CompositePresentationEvent.Subscribe(emptyAction.Action);
Assert.IsTrue(CompositePresentationEvent.Contains(token));
CompositePresentationEvent.Unsubscribe(emptyAction.Action);
Assert.IsFalse(CompositePresentationEvent.Contains(token));
}
public void RegisterReturnsTokenThatCanBeUsedToUnsubscribe()
{
var CompositePresentationEvent = new TestableCompositePresentationEvent <string>();
var emptyAction = new ActionHelper();
var token = CompositePresentationEvent.Subscribe(emptyAction.Action);
CompositePresentationEvent.Unsubscribe(token);
Assert.IsFalse(CompositePresentationEvent.Contains(emptyAction.Action));
}
public void InlineDelegateDeclarationsDoesNotGetCollectedIncorrectlyWithWeakReferences()
{
var CompositePresentationEvent = new TestableCompositePresentationEvent <string>();
bool published = false;
CompositePresentationEvent.Subscribe(delegate { published = true; }, ThreadOption.PublisherThread, false, delegate { return(true); });
GC.Collect();
CompositePresentationEvent.Publish(null);
Assert.IsTrue(published);
}
public void CanSubscribeAndRaiseCustomEvent()
{
var customEvent = new TestableCompositePresentationEvent <Payload>();
Payload payload = new Payload();
var action = new ActionHelper();
customEvent.Subscribe(action.Action);
customEvent.Publish(payload);
Assert.AreSame(action.ActionArg <Payload>(), payload);
}
public void ShouldUnsubscribeFromUIThread()
{
var CompositePresentationEvent = new TestableCompositePresentationEvent <string>();
var actionEvent = new ActionHelper();
CompositePresentationEvent.Subscribe(
actionEvent.Action,
ThreadOption.UIThread);
Assert.IsTrue(CompositePresentationEvent.Contains(actionEvent.Action));
CompositePresentationEvent.Unsubscribe(actionEvent.Action);
Assert.IsFalse(CompositePresentationEvent.Contains(actionEvent.Action));
}
public void SubscribeDefaultsThreadOptionAndNoFilter()
{
TestableCompositePresentationEvent <string> compositePresentationEvent = new TestableCompositePresentationEvent <string>();
int calledThreadID = -1;
var myAction = new ActionHelper()
{
ActionToExecute =
() => calledThreadID = Thread.CurrentThread.ManagedThreadId
};
compositePresentationEvent.Subscribe(myAction.Action);
compositePresentationEvent.Publish("test");
Assert.AreEqual(Thread.CurrentThread.ManagedThreadId, calledThreadID);
}
public void ShouldNotGarbageCollectDelegateReferenceWhenUsingKeepAlive()
{
var CompositePresentationEvent = new TestableCompositePresentationEvent <string>();
var externalAction = new ExternalAction();
CompositePresentationEvent.Subscribe(externalAction.ExecuteAction, ThreadOption.PublisherThread, true);
WeakReference actionEventReference = new WeakReference(externalAction);
externalAction = null;
GC.Collect();
GC.Collect();
Assert.IsTrue(actionEventReference.IsAlive);
CompositePresentationEvent.Publish("testPayload");
Assert.AreEqual("testPayload", ((ExternalAction)actionEventReference.Target).PassedValue);
}
public void ShouldNotExecuteOnGarbageCollectedDelegateReferenceWhenNotKeepAlive()
{
var CompositePresentationEvent = new TestableCompositePresentationEvent <string>();
ExternalAction externalAction = new ExternalAction();
CompositePresentationEvent.Subscribe(externalAction.ExecuteAction);
CompositePresentationEvent.Publish("testPayload");
Assert.AreEqual("testPayload", externalAction.PassedValue);
WeakReference actionEventReference = new WeakReference(externalAction);
externalAction = null;
GC.Collect();
Assert.IsFalse(actionEventReference.IsAlive);
CompositePresentationEvent.Publish("testPayload");
}
public void FilterEnablesActionTarget()
{
TestableCompositePresentationEvent <string> compositePresentationEvent = new TestableCompositePresentationEvent <string>();
var goodFilter = new MockFilter {
FilterReturnValue = true
};
var actionGoodFilter = new ActionHelper();
var badFilter = new MockFilter {
FilterReturnValue = false
};
var actionBadFilter = new ActionHelper();
compositePresentationEvent.Subscribe(actionGoodFilter.Action, ThreadOption.PublisherThread, true, goodFilter.FilterString);
compositePresentationEvent.Subscribe(actionBadFilter.Action, ThreadOption.PublisherThread, true, badFilter.FilterString);
compositePresentationEvent.Publish("test");
Assert.IsTrue(actionGoodFilter.ActionCalled);
Assert.IsFalse(actionBadFilter.ActionCalled);
}
public void CanAddSubscriptionWhileEventIsFiring()
{
var CompositePresentationEvent = new TestableCompositePresentationEvent <string>();
var emptyAction = new ActionHelper();
var subscriptionAction = new ActionHelper
{
ActionToExecute = (() =>
CompositePresentationEvent.Subscribe(
emptyAction.Action))
};
CompositePresentationEvent.Subscribe(subscriptionAction.Action);
Assert.IsFalse(CompositePresentationEvent.Contains(emptyAction.Action));
CompositePresentationEvent.Publish(null);
Assert.IsTrue((CompositePresentationEvent.Contains(emptyAction.Action)));
}
public void ShouldUnsubscribeASingleDelegate()
{
var CompositePresentationEvent = new TestableCompositePresentationEvent <string>();
int callCount = 0;
var actionEvent = new ActionHelper()
{
ActionToExecute = () => callCount++
};
CompositePresentationEvent.Subscribe(actionEvent.Action);
CompositePresentationEvent.Subscribe(actionEvent.Action);
CompositePresentationEvent.Publish(null);
Assert.AreEqual <int>(2, callCount);
callCount = 0;
CompositePresentationEvent.Unsubscribe(actionEvent.Action);
CompositePresentationEvent.Publish(null);
Assert.AreEqual <int>(1, callCount);
}