}
	nativeDB, err := sql.Open("mysql", dbDSN)
	if err != nil {
		t.Fatalf("Should open db success, but got %v", err)
	}

	conn := &wrapperConnPool{
		db: nativeDB,
		expect: []string{
			"SELECT VERSION()",
			"INSERT INTO `users` (`created_at`,`updated_at`,`deleted_at`,`name`,`age`,`birthday`,`company_id`,`manager_id`,`active`) VALUES (?,?,?,?,?,?,?,?,?)",

	CreatedAt time.Time
	CreatedBy *int
	Created   *VersionUser `gorm:"foreignKey:CreatedBy"`
	UpdatedAt time.Time
	DeletedAt gorm.DeletedAt `gorm:"index"`
}

type VersionModel struct {
	BaseModel
	Version int
}

type VersionUser struct {
	VersionModel
	Name     string
	Age      uint
	Birthday *time.Time

		{Name: "CreatedBy", DBName: "created_by", BindNames: []string{"VersionModel", "BaseModel", "CreatedBy"}, DataType: schema.Uint, Size: 64},
		{Name: "Version", DBName: "version", BindNames: []string{"VersionModel", "Version"}, DataType: schema.Int, Size: 64},
	}

	for _, f := range fields {
		checkSchemaField(t, versionUser, &f, func(f *schema.Field) {
			f.Creatable = true
			f.Updatable = true