public void RaisesSingleEventWhileRemovingRange()
{
var counter = 0;
var fastCollection = new FastObservableCollection <int>(new[] { 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5 });
fastCollection.AutomaticallyDispatchChangeNotifications = false;
fastCollection.CollectionChanged += (sender, e) => counter++;
fastCollection.RemoveItems(new[] { 1, 2, 3, 4, 5 });
Assert.AreEqual(1, counter);
fastCollection.RemoveItems(new[] { 1, 2, 3, 4, 5 }, SuspensionMode.Removing);
Assert.AreEqual(2, counter);
fastCollection.RemoveItems(new ArrayList(new[] { 1, 2, 3, 4, 5 }));
Assert.AreEqual(3, counter);
fastCollection.RemoveItems(new ArrayList(new[] { 1, 2, 3, 4, 5 }), SuspensionMode.Removing);
Assert.AreEqual(4, counter);
}
public void RaisesSingleEventWhileAddingRange()
{
int counter = 0;
var fastCollection = new FastObservableCollection<int>(new [] { 1, 2, 3, 4, 5 });
fastCollection.AutomaticallyDispatchChangeNotifications = false;
fastCollection.CollectionChanged += (sender, e) => counter++;
fastCollection.RemoveItems(new[] { 1, 2, 3, 4, 5 });
Assert.AreEqual(1, counter);
}
public void RaisesSingleRemoveEventWhileRemovingRangeWithoutSuspensionMode()
{
var eventArgs = default(NotifyCollectionChangedEventArgs);
var fastCollection = new FastObservableCollection <int>(new[] { 1, 2, 3, 4, 5 });
fastCollection.AutomaticallyDispatchChangeNotifications = false;
fastCollection.CollectionChanged += (sender, e) => eventArgs = e;
fastCollection.RemoveItems(new[] { 1, 2, 3, 4, 5 });
Assert.AreEqual(NotifyCollectionChangedAction.Reset, eventArgs.Action);
}
public void RaisesSingleEventWhileAddingRange()
{
int counter = 0;
var fastCollection = new FastObservableCollection <int>(new [] { 1, 2, 3, 4, 5 });
fastCollection.AutomaticallyDispatchChangeNotifications = false;
fastCollection.CollectionChanged += (sender, e) => counter++;
fastCollection.RemoveItems(new[] { 1, 2, 3, 4, 5 });
Assert.AreEqual(1, counter);
}
public void RaisesTwoEvents()
{
var eventArgsList = new List <NotifyCollectionChangedEventArgs>();
var fastCollection = new FastObservableCollection <int>();
fastCollection.AddItems(new[] { 1, 2, 3, 4 });
fastCollection.CollectionChanged += (sender, args) => { eventArgsList.Add(args); };
using (fastCollection.SuspendChangeNotifications(SuspensionMode.Mixed))
{
fastCollection.RemoveItems(new[] { 4 });
fastCollection.AddItems(new[] { 5 });
}
Assert.AreEqual(2, eventArgsList.Count);
Assert.Contains(5, eventArgsList.First(args => args.Action == NotifyCollectionChangedAction.Add).NewItems);
Assert.Contains(4, eventArgsList.First(args => args.Action == NotifyCollectionChangedAction.Remove).OldItems);
}
public void RaisesSingleAddEventIfTheRemovedItemsAreASubSetOfTheAddedItems()
{
var count = 0;
NotifyCollectionChangedEventArgs eventArgs = null;
var fastCollection = new FastObservableCollection <int>();
fastCollection.CollectionChanged += (sender, args) =>
{
count++;
eventArgs = args;
};
using (fastCollection.SuspendChangeNotifications(SuspensionMode.Mixed))
{
fastCollection.AddItems(new[] { 1, 2, 3, 4 });
fastCollection.RemoveItems(new[] { 2, 3 });
}
Assert.AreEqual(NotifyCollectionChangedAction.Add, eventArgs.Action);
Assert.AreEqual(1, count);
Assert.AreEqual(new[] { 1, 4 }, eventArgs.NewItems.OfType <int>().ToArray());
}
public void ThrowsArgumentNullExceptionForNullCollection()
{
var fastCollection = new FastObservableCollection<int>();
ExceptionTester.CallMethodAndExpectException<ArgumentNullException>(() => fastCollection.RemoveItems(null));
}
public void ThrowsInvalidOperationExceptionForInvalidSuspensionMode()
{
var fastCollection = new FastObservableCollection <int>(new[] { 1, 2, 3, 4, 5 });
fastCollection.AutomaticallyDispatchChangeNotifications = false;
ExceptionTester.CallMethodAndExpectException <InvalidOperationException>(() => fastCollection.RemoveItems(new[] { 1, 2, 3, 4, 5 }, SuspensionMode.Adding));
}
public void ThrowsArgumentNullExceptionForNullCollection()
{
var fastCollection = new FastObservableCollection <int>();
fastCollection.AutomaticallyDispatchChangeNotifications = false;
ExceptionTester.CallMethodAndExpectException <ArgumentNullException>(() => fastCollection.RemoveItems(null));
ExceptionTester.CallMethodAndExpectException <ArgumentNullException>(() => fastCollection.RemoveItems(null, SuspensionMode.Removing));
}
public void ThrowsArgumentNullExceptionForNullCollection()
{
var fastCollection = new FastObservableCollection <int>();
ExceptionTester.CallMethodAndExpectException <ArgumentNullException>(() => fastCollection.RemoveItems(null));
}
