public void OrderByTransaction_ChangeReplace_Update()
{
ExecutionEngine.Current = new SequentialExecutionEngine();
var update = false;
var dummy1 = new ObservableDummy <int>(1);
var dummy2 = new Dummy <int>(3);
var dummy3 = new Dummy <int>(5);
var coll = new NotifyCollection <Dummy <int> >()
{
dummy1, dummy2, dummy3
};
var newDummy = new Dummy <int>(2);
var test = coll.OrderBy(d => d.Item);
test.CollectionChanged += (o, e) => update = true;
test.AssertSequence(dummy1, dummy2, dummy3);
Assert.AreEqual(3, test.Sequences.Count());
Assert.IsFalse(update);
ExecutionEngine.Current.BeginTransaction();
dummy1.Item = 0;
coll[0] = newDummy;
Assert.IsFalse(update);
ExecutionEngine.Current.CommitTransaction();
test.AssertSequence(newDummy, dummy2, dummy3);
Assert.AreEqual(3, test.Sequences.Count());
Assert.IsTrue(update);
}