public void When_Adding_To_Collection_Via_Indexer_Status_Should_Be_Added()
{
IList<Order> list = Helper.GetOrdersIList();
var trackable = list.AsTrackable();
trackable[0] = new Order { Id = 999999999, CustomerNumber = "Customer" };
trackable.Single(o => o.Id == 999999999).CastToIChangeTrackable().ChangeTrackingStatus.Should().Be(ChangeStatus.Added);
}