public void AddRangeRaisesCorrectCollectionChangedEvent()
{
var collection = new RangedObservableCollection <int>();
collection.CollectionChanged += (s, e) =>
{
Assert.Equal(NotifyCollectionChangedAction.Add, e.Action);
Assert.Null(e.OldItems);
Assert.Equal(ItemsToAdd, e.NewItems);
};
collection.AddRange(ItemsToAdd);
Assert.Equal(ItemsToAdd, collection.ToArray());
}
public void RemoveRangeRaisesCorrectCollectionChangedEventForNonExistentRemoves()
{
var collection = new RangedObservableCollection <int>();
collection.AddRange(ItemsToAdd);
collection.CollectionChanged += (s, e) =>
{
Assert.Equal(NotifyCollectionChangedAction.Remove, e.Action);
Assert.Equal(new[] { 1, 2, 3, 4, 5 }, e.OldItems);
Assert.Null(e.NewItems);
};
collection.RemoveRange(new[] { 1, 2, 3, 4, 5, 60, 70, 80, 90, 100 });
Assert.Equal(new[] { 6, 7, 8, 9, 0 }, collection.ToArray());
}
