public void NotKeepAliveShouldAllowDelegateToBeCollected()
{
var delegates = new TestClassHandler();
var delegateReference = new DelegateReference((Action<string>) delegates.DoEvent, false);
delegates = null;
GC.Collect();
Assert.That(delegateReference.Target, Is.Null);
}
public void KeepAliveShouldPreventDelegateFromBeingCollected()
{
var delegates = new TestClassHandler();
var delegateReference = new DelegateReference((Action<string>)delegates.DoEvent, true);
delegates = null;
GC.Collect();
Assert.That(delegateReference.Target, Is.Not.Null);
}
public void ShouldAllowCollectionOfOriginalDelegate()
{
var classHandler = new TestClassHandler();
Action<string> myAction = classHandler.MyAction;
var weakAction = new DelegateReference(myAction, false);
var originalAction = new WeakReference(myAction);
myAction = null;
GC.Collect();
Assert.That(originalAction.IsAlive, Is.False);
((Action<string>)weakAction.Target)("payload");
Assert.That(classHandler.MyActionArg, Is.EqualTo("payload"));
}
public void TargetShouldReturnAction()
{
var classHandler = new TestClassHandler();
Action<string> myAction = classHandler.MyAction;
var weakAction = new DelegateReference(myAction, false);
((Action<string>) weakAction.Target)("payload");
Assert.That(classHandler.MyActionArg, Is.EqualTo("payload"));
}
public void ShouldReturnNullIfTargetNotAlive()
{
var handler = new TestClassHandler();
var weakHandlerRef = new WeakReference(handler);
var action = new DelegateReference((Action<string>)handler.DoEvent, false);
handler = null;
GC.Collect();
Assert.That(weakHandlerRef.IsAlive, Is.False);
Assert.That(action.Target, Is.Null);
}