public void ShouldAllowSubscriberReferenceToBeCollected()
{
var alarm = new Alarm();
var sleepyReference = (null as WeakReference);
new Action(() =>
{
// Run this in a delegate to that the local variable gets garbage collected
var sleepy = new Sleepy(alarm);
alarm.Beep();
alarm.Beep();
Assert.AreEqual(2, sleepy.SnoozeCount);
sleepyReference = new WeakReference(sleepy);
})();
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
Assert.IsNull(sleepyReference.Target);
}
public void ShouldHandleEventWhenBothReferencesAreAlive()
{
var alarm = new Alarm();
var sleepy = new Sleepy(alarm);
alarm.Beep();
alarm.Beep();
Assert.AreEqual(2, sleepy.SnoozeCount);
}
public Sleepy(Alarm alarm)
{
_alarm = alarm;
_alarm.Beeped += new WeakEventHandler<PropertyChangedEventArgs>(Alarm_Beeped).Handler;
}
public void SubscriberShouldNotBeUnsubscribedUntilCollection()
{
var alarm = new Alarm();
var sleepy = new Sleepy(alarm);
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
alarm.Beep();
alarm.Beep();
Assert.AreEqual(2, sleepy.SnoozeCount);
}