public void When_AsTrackable_On_Collection_CastToIChangeTrackableCollection_Should_Not_Throw_InvalidCastException()
{
var orders = Helper.GetOrdersIList();
IList<Order> trackable = orders.AsTrackable();
trackable.Invoking(o => o.CastToIChangeTrackableCollection()).ShouldNotThrow<InvalidCastException>();
}