public void UpdatesAccordingly()
{
List <int> list = new List <int>();
var collection = new ObservableGroupedOrderedCollection <int>(i => i, i => i, i => i.ToString().Length);
collection.ReplaceWith(list);
var scheduler = new TestScheduler();
var observer = scheduler.CreateObserver <int>();
collection.TotalCount.Subscribe(observer);
collection.InsertItem(20);
collection.InsertItem(2);
collection.RemoveItemAt(0, 0);
collection.RemoveItemAt(0, 0);
observer.Messages.AssertEqual(
OnNext(0, 0),
OnNext(0, 1),
OnNext(0, 2),
OnNext(0, 1),
OnNext(0, 0)
);
}
public void SendsEventWhenFirstItemOfSectionAdded()
{
List <int> list = new List <int> {
8, 3, 1, 2
};
var collection = new ObservableGroupedOrderedCollection <int>(i => i, i => i, i => i.ToString().Length);
collection.ReplaceWith(list);
var scheduler = new TestScheduler();
var observer = scheduler.CreateObserver <CollectionChange>();
collection.CollectionChanges.SelectMany(l => l.ToObservable()).Subscribe(observer);
collection.InsertItem(20);
var change = new CollectionChange
{
Index = new SectionedIndex(1, 0),
Type = CollectionChangeType.AddSection
};
observer.Messages.AssertEqual(
OnNext(0, change)
);
}
public void SendsEventWhenItemAdded()
{
List <int> list = new List <int> {
40, 70, 8, 3, 1, 2
};
var collection = new ObservableGroupedOrderedCollection <int>(i => i, i => i, i => i.ToString().Length);
collection.ReplaceWith(list);
var scheduler = new TestScheduler();
var observer = scheduler.CreateObserver <ICollectionChange>();
collection.CollectionChange.Subscribe(observer);
collection.InsertItem(20);
ICollectionChange change = new AddRowCollectionChange <int>(new SectionedIndex(1, 0), 20);
observer.Messages.AssertEqual(
OnNext(0, change)
);
}