if DB.Save(&p2).Error == nil {
		t.Fatalf("An error from before save callbacks happened when update with invalid value")
	}

	p3 := Product{Code: "dont_delete", Price: 100}
	DB.Save(&p3)
	if DB.Delete(&p3).Error == nil {
		t.Fatalf("An error from before delete callbacks happened when delete")
	}

	if DB.Where("Code = ?", "dont_delete").First(&p3).Error != nil {
		t.Fatalf("An error from before delete callbacks happened")
	}

//
// Attrs only adds attributes if the record is not found.
//
//	// assign an email if the record is not found
//	db.Where(User{Name: "non_existing"}).Attrs(User{Email: "******@****.***"}).FirstOrInit(&user)
//	// user -> User{Name: "non_existing", Email: "******@****.***"}
//
//	// assign an email if the record is not found, otherwise ignore provided email

// Each conds must be a struct or map.
//
// Using FirstOrCreate in conjunction with Assign will result in an update to the database even if the record exists.
//
//	// assign an email if the record is not found
//	result := db.Where(User{Name: "non_existing"}).Attrs(User{Email: "******@****.***"}).FirstOrCreate(&user)

func (ct ColumnType) Name() string {
	if ct.NameValue.Valid {
		return ct.NameValue.String
	}
	return ct.SQLColumnType.Name()
}

// DatabaseTypeName returns the database system name of the column type. If an empty
// string is returned, then the driver type name is not supported.
// Consult your driver documentation for a list of driver data types. Length specifiers
// are not included.

	var cc2 CustomizeColumn
	DB.First(&cc2, "mapped_id = ?", 666)
	if cc2.Name != "bar" {
		t.Errorf("Failed to query CustomizeColumn")
	}
}

func TestCustomColumnAndIgnoredFieldClash(t *testing.T) {
	// Make sure an ignored field does not interfere with another field's custom
	// column name that matches the ignored field.
	type CustomColumnAndIgnoredFieldClash struct {
		Body    string `gorm:"-"`
		RawBody string `gorm:"column:body"`
	}

		t.Fatalf("Failed to auto migrate: error: %v", err)
	}

	// make new session to set custom logger tracer
	session := DB.Session(&gorm.Session{Logger: tracer})

	// The second AutoMigrate to catch an error
	if err := session.AutoMigrate(&MigrateInt{}); err != nil {
		t.Fatalf("Failed to auto migrate: error: %v", err)
	}
}

func TestAutoMigrateSelfReferential(t *testing.T) {
	type MigratePerson struct {

		Where("id = ?", elem.Id).
		Updates(&ElementWithIgnoredField{Value: "bar", IgnoredField: 100})

	var result ElementWithIgnoredField
	if err := DB.First(&result, elem.Id).Error; err != nil {
		t.Errorf("error getting an element from database: %s", err.Error())
	}

	if result.IgnoredField != 0 {
		t.Errorf("element's ignored field should not be updated")
	}
}

func TestUpdateFromSubQuery(t *testing.T) {