public void OnCollectionChanged_Invoke_CallsHandler()
{
var collection = new SubBindingsCollection();
var eventArgs = new CollectionChangeEventArgs(CollectionChangeAction.Refresh, null);
int callCount = 0;
CollectionChangeEventHandler handler = (sender, e) =>
{
Assert.Same(collection, sender);
Assert.Same(eventArgs, e);
callCount++;
};
// Call with handler.
collection.CollectionChanged += handler;
collection.OnCollectionChanged(eventArgs);
Assert.Equal(1, callCount);
// Remove handler.
collection.CollectionChanged -= handler;
collection.OnCollectionChanged(eventArgs);
Assert.Equal(1, callCount);
}
