return errors.New("invalid item")
	}
	return nil
}

func (pi *ProductItem) AfterFind(*gorm.DB) error {
	pi.AfterFindCallTimes = pi.AfterFindCallTimes + 1
	return nil
}

func TestFailedToSaveAssociationShouldRollback(t *testing.T) {
	DB.Migrator().DropTable(&Product4{}, &ProductItem{})
	DB.AutoMigrate(&Product4{}, &ProductItem{})

	product := Product4{Name: "Product-1", Price: 100, Item: ProductItem{Code: "invalid"}}