public void TestUpdate()
{
// View should not post events if data didn't change
_myView.Update(MakeBeans("f", 1), null);
CheckOldData(0);
CheckNewData(1);
_childView.LastNewData = null;
_childView.LastOldData = null;
_myView.Update(MakeBeans("f", 1), MakeBeans("f", 1));
Assert.IsNull(_childView.LastNewData);
Assert.IsNull(_childView.LastOldData);
}