public void AddingToOriginalCollectionFiresAddCollectionChangeEvent()
{
var originalCollection = new ObservableCollection <ItemMetadata>();
IViewsCollection viewsCollection = new ViewsCollection(originalCollection, (i) => true);
var eventTracker = new CollectionChangedTracker(viewsCollection);
originalCollection.Add(new ItemMetadata(new ContentView()));
Assert.Contains(NotifyCollectionChangedAction.Add, eventTracker.ActionsFired);
}
public void AddingToOriginalCollectionFiresResetNotificationIfSortComparisonSet()
{
// Reset is fired to support the need to resort after updating the collection
var originalCollection = new ObservableCollection <ItemMetadata>();
var viewsCollection = new ViewsCollection(originalCollection, (i) => true);
viewsCollection.SortComparison = (a, b) => { return(0); };
var eventTracker = new CollectionChangedTracker(viewsCollection);
originalCollection.Add(new ItemMetadata(new ContentView()));
Assert.Contains(NotifyCollectionChangedAction.Add, eventTracker.ActionsFired);
Assert.Equal(
1,
eventTracker.ActionsFired.Count(a => a == NotifyCollectionChangedAction.Reset));
}