public void ResetTest()
{
ConcurrentObservableSortedCollection <int> subject = new ConcurrentObservableSortedCollection <int>();
// Use a fixed seed for consistency in results
Random random = new Random(2);
for (int item = 0; item < _itemsPerCollection; ++item)
{
// Ensure we have some duplicates by picking a random number
// less than half the number of items.
subject.Add(random.Next(_itemsPerCollection / 2));
}
subject.Reset(_testCollections.SelectMany(x => x).ToList());
// Compare test subject with expected result
Assert.AreEqual(subject.Count, _sortedCollection.Count);
bool itemsEqual = _sortedCollection
.Zip(subject, (a, b) => a == b)
.All(b => b);
Assert.IsTrue(itemsEqual);
// Compare collectionView
var view = subject.CollectionView;
Assert.AreEqual(view.Count, _sortedCollection.Count);
bool viewItemsEqual = _sortedCollection
.Zip(view, (a, b) => a == b)
.All(b => b);
Assert.IsTrue(viewItemsEqual);
}
public void Test_ConcurrentObservableSortedCollection_Reset()
{
var initial = Enumerable.Range(0, 100).ToList();
var toAdd = Enumerable.Range(100, 100).ToList();
var collection = new ConcurrentObservableSortedCollection <int>();
collection.AddRange(initial);
Assert.AreEqual(100, collection.Count);
// Record all the collection changed events
List <(object, NotifyCollectionChangedEventArgs)> returnedList = new List <(object, NotifyCollectionChangedEventArgs)>();
collection.CollectionChanged += (s, e) => returnedList.Add((s, e));
collection.Reset(toAdd);
// Check two collection changed events were fired
Assert.AreEqual(2, returnedList.Count);
(var returnedObject0, var returnedArgs0) = returnedList[0];
(var returnedObject1, var returnedArgs1) = returnedList[1];
Assert.IsNotNull(returnedObject0);
Assert.IsNotNull(returnedArgs0);
Assert.IsNotNull(returnedObject1);
Assert.IsNotNull(returnedArgs1);
Assert.AreEqual(returnedObject0, collection);
Assert.AreEqual(returnedObject1, collection);
Assert.AreEqual(NotifyCollectionChangedAction.Remove, returnedArgs0.Action);
Assert.AreEqual(NotifyCollectionChangedAction.Add, returnedArgs1.Action);
Assert.IsNull(returnedArgs0.NewItems);
Assert.IsNotNull(returnedArgs0.OldItems);
Assert.AreEqual(initial.Count(), returnedArgs0.OldItems.Count);
Assert.IsTrue(CollectionsAreEqual(initial, returnedArgs0.OldItems));
Assert.IsNull(returnedArgs1.OldItems);
Assert.IsNotNull(returnedArgs1.NewItems);
Assert.AreEqual(toAdd.Count(), returnedArgs1.NewItems.Count);
Assert.IsTrue(CollectionsAreEqual(toAdd, returnedArgs1.NewItems));
}
