public void TestThreeLevels()
        {
            var em = new EntityManager(shouldConnect: false);

            //Make two products - '100' and '200'
            var product1 = em.CreateEntity<Product>();
            product1.EntityAspect.AddToManager();
            product1.ProductID = 100;

            var product2 = em.CreateEntity<Product>();
            product2.EntityAspect.AddToManager();
            product2.ProductID = 200;

            //Create an Order
            var order = em.CreateEntity<Order>();
            order.EntityAspect.AddToManager();
            order.OrderID = 1;

            //And one detail that is currently pointing to Product 100
            var detail = em.CreateEntity<OrderDetail>();
            detail.EntityAspect.AddToManager();
            detail.ProductID = 100;

            order.OrderDetails.Add(detail);

            //Make an extra detail entity
            var extra = em.CreateEntity<OrderDetailExtraDetail>();
            extra.EntityAspect.AddToManager();
            extra.DetailID = 3;

            detail.OrderDetailRevisions.Add(extra);

            //Sanity check to make sure the extra entity is how we expect it
            Assert.AreEqual(1, extra.OrderID);
            Assert.AreEqual(100, extra.ProductID);
            Assert.AreEqual(3, extra.DetailID);

            //Now switch the detail to Product 200.  I would expect this change to cascade 
            //  to its child (the extra detail).  It sort of cascades but not in any sensible way...
            detail.ProductID = 200;

            //This fails:  the order ID somehow got set to 200?  But that was the Product ID not the Order ID
            Assert.AreEqual(1, extra.OrderID);

            //This also fails: The Product ID wasn't changed - it is still 100
            Assert.AreEqual(200, extra.ProductID);
            Assert.AreEqual(3, extra.DetailID);
        }