public void When_registering_weak_event_then_it_should_still_be_here_when_target_referenced()
{
//// Arrange
var eventCalled = false;
var target = new MockEventTargetClass(() =>
{
eventCalled = true;
});
var obj = new MockObservableObject();
//// Act
WeakEvent.RegisterEvent<MockObservableObject, PropertyChangedEventArgs>(obj, "PropertyChanged", target.Callback);
obj.Name = "test1";
Assert.IsTrue(eventCalled);
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
eventCalled = false;
obj.Name = "test2";
//// Assert
Assert.IsTrue(eventCalled);
target.Action = null;
}
public void When_registering_typed_weak_event_then_it_should_still_be_here_when_target_referenced()
{
//// Arrange
var eventCalled = false;
var target = new MockEventTargetClass(() =>
{
eventCalled = true;
});
var obj = new MockObservableObject();
//// Act
WeakEvent.RegisterEvent<MockEventTargetClass, PropertyChangedEventHandler, PropertyChangedEventArgs>(
target,
h => obj.PropertyChanged += h,
h => obj.PropertyChanged -= h,
h => (o, e) => h(o, e),
(t, sender, args) => t.Callback(sender, args));
obj.Name = "test1";
Assert.IsTrue(eventCalled);
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
eventCalled = false;
obj.Name = "test2";
//// Assert
Assert.IsTrue(eventCalled);
target.Action = null;
}
