public void ObservableItemContentRangeCollection_WhenCreatedWithoutItems_CreatesEmptyCollection()
{
var collection = new ObservableItemContentRangeCollection <ObservableObject>();
Assert.IsAssignableFrom <ObservableCollection <ObservableObject> >(collection);
Assert.Empty(collection);
}
public void ObservableItemContentRangeCollection_WhenCreatedWithItems_AddsAllItems(
IEnumerable <ObservableObject> items)
{
var collection = new ObservableItemContentRangeCollection <ObservableObject>(items);
Assert.IsAssignableFrom <ObservableCollection <ObservableObject> >(collection);
Assert.Equal(items.Count(), collection.Count);
Assert.Equal(collection, items);
}
public void ObservableItemContentRangeCollection_WhenCreatedWithItems_DoesNotNotifyForRemovedItems()
{
var item = new TestObservableObject();
var items = new List <TestObservableObject>()
{
item, new TestObservableObject(), new TestObservableObject()
};
var collection = new ObservableItemContentRangeCollection <TestObservableObject>(items);
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);
}
