public void WatchListTriggersRemoveAll()
{
var wl = new WatchList<int>("carp");
bool triggered = false;
wl.AddRangeInternal(new int[] { 1, 2, 3 });
wl.OnCollectionChanged += new CollectionChanged<int>(delegate(string name, IEnumerable<int> collection)
{
triggered = true;
});
wl.RemoveAll(new Predicate<int>(p => p == 1));
Assert.IsTrue(triggered);
}