public void Remove_TwoItems_ItemsAreRemovedAndCollectionChangedRaised()
{
var collectionChangedEventArgsList = new List <NotifyCollectionChangedEventArgs>();
var collection = new ExtendedObservableCollection <int> {
123, 456, 789
};
collection.CollectionChanged += (_, args) => collectionChangedEventArgsList.Add(args);
collection.Remove(123);
collection.Remove(456);
Assert.Single(collection);
Assert.Equal(789, collection[0]);
Assert.Equal(2, collectionChangedEventArgsList.Count);
Assert.Equal(NotifyCollectionChangedAction.Remove, collectionChangedEventArgsList[0].Action);
Assert.NotNull(collectionChangedEventArgsList[0].OldItems);
Assert.Single(collectionChangedEventArgsList[0].OldItems);
Assert.Equal(123, collectionChangedEventArgsList[0].OldItems[0]);
Assert.Equal(NotifyCollectionChangedAction.Remove, collectionChangedEventArgsList[1].Action);
Assert.NotNull(collectionChangedEventArgsList[1].OldItems);
Assert.Single(collectionChangedEventArgsList[1].OldItems);
Assert.Equal(456, collectionChangedEventArgsList[1].OldItems[0]);
}
public static void Main(string[] args)
{
var collection = new ExtendedObservableCollection <string>();
collection.CollectionChanged += Collection_CollectionChanged;
collection.Add("item1");
collection.AddRange(new string[] { "item2", "item3", "item4" });
collection[0] = "item1 mk2";
collection.Move(0, 3);
collection.Remove("item3");
collection.Clear();
}
