public void Is_invalid_when_item_status_is_shipped()
 {
     var item = new OrderItem();
     item.OrderStatusID = OrderStatusConstants.SHIPPED_STATUS;
     var rule = new ValidOrderItemStatusForDeleteRule(item);
     rule.Validate().IsValid.ShouldBe(false);
     rule.ErrorMessage.ShouldNotBe(null);
 }
 public void Is_valid_when_item_status_is_not_shipped()
 {
     var item = new OrderItem();
     item.OrderStatusID = OrderStatusConstants.PENDING_STATUS;
     var rule = new ValidOrderItemStatusForDeleteRule(item);
     rule.Validate().IsValid.ShouldBe(true);
     rule.ErrorMessage.ShouldBe(null);
 }