const int orderId = 10248;

//I can get the order details out of the EM like this - so I know they are in the cache
var details1 = em.OrderDetails.With(QueryStrategy.CacheOnly).Where(od => od.OrderID == orderId).ToList();

//details1 will now have 3 items in it

//Grab the order and then try to get it's details with the navigation property...
var order = em.Orders.With(QueryStrategy.CacheOnly).Single(o => o.OrderID == orderId);
//order is the correct entity

var details2 = order.OrderDetails.ToList();
//details2 is just an empty list!

var em = new NorthwindIBEntities();
        
//Grab a particular employee and his/her orders (testing on the server so we can do it synchronously)
var employeeAndOrders = em.Employees.Include(e => e.Orders).Single(e => e.EmployeeID == 5);
        
//See what Orders are in the cache
var orders1 = em.FindEntities<Order>(EntityState.AllButDetached).ToList();
        
//See what Orders are in the Navigation Property
var orders2 = employeeAndOrders.Orders.ToList();

//There should be 42 in both
Assert.AreEqual(42, orders1.Count);
Assert.AreEqual(42, orders2.Count);

Employee.PropertyMetadata.Orders.ReferenceStrategy = EntityReferenceStrategy.NoLoad;