public async Task Is_invalid_when_item_status_is_shipped_async()
 {
     var item = new OrderItem();
     item.OrderStatusID = OrderStatusConstants.SHIPPED_STATUS;
     var rule = new ValidOrderItemStatusForDeleteRule(item);
     await rule.ValidateAsync();
     rule.IsValid.ShouldBe(false);
     rule.ErrorMessage.ShouldNotBe(null);
 }