public void ObservableItemContentRangeCollection_WhenCreatedWithoutItems_DoesNotNotifyForRemovedItems()
{
var item = new TestObservableObject();
var collection = new ObservableItemContentRangeCollection <TestObservableObject>();
CustomAsserts.Assert_NotRaises <NotifyCollectionChangedEventArgs>(
handler => collection.CollectionChanged += (s, e) => handler.Invoke(s, e),
handler => { },
() => item.TestProperty = TestPropertyValue);
collection.Add(item);
collection.Remove(item);
CustomAsserts.Assert_NotRaises <NotifyCollectionChangedEventArgs>(
handler => collection.CollectionChanged += (s, e) => handler.Invoke(s, e),
handler => { },
() => item.TestProperty = TestPropertyValue2);
}
public void ObservableItemContentRangeCollection_WhenCreatedWithoutItems_NotifiesForAddedItems()
{
var item = new TestObservableObject();
var collection = new ObservableItemContentRangeCollection <TestObservableObject>();
collection.Add(item);
var itemIndex = collection.IndexOf(item);
var raisedEvent = Assert.Raises <NotifyCollectionChangedEventArgs>(
handler => collection.CollectionChanged += (s, e) => handler.Invoke(s, e),
handler => { },
() => item.TestProperty = TestPropertyValue);
Assert.NotNull(raisedEvent);
Assert.Equal(NotifyCollectionChangedAction.Replace, raisedEvent.Arguments.Action);
Assert.Equal(itemIndex, raisedEvent.Arguments.NewStartingIndex);
Assert.Equal(itemIndex, raisedEvent.Arguments.OldStartingIndex);
}
