rowsAffected += result.RowsAffected
		batch++

		if result.Error == nil && result.RowsAffected != 0 {
			fcTx := result.Session(&Session{NewDB: true})
			fcTx.RowsAffected = result.RowsAffected
			tx.AddError(fc(fcTx, batch))
		} else if result.Error != nil {
			tx.AddError(result.Error)
		}

		if tx.Error != nil || int(result.RowsAffected) < batchSize {
			break
		}

		t.Fatalf("Failed, got error: %v, rows affected: %v", result.Error, result.RowsAffected)
	}

	tx2 := db.Begin()
	if result := tx2.Where("name=?", "zzjin").Delete(&User{}); result.Error != nil || result.RowsAffected != 0 {
		t.Fatalf("Failed, got error: %v, rows affected: %v", result.Error, result.RowsAffected)
	}
	tx2.Commit()
}

			BEGIN:
				initialized = false

				if update {
					if int(db.RowsAffected) >= reflectValue.Len() {
						return
					}
					elem = reflectValue.Index(int(db.RowsAffected))
					if onConflictDonothing {
						for _, field := range fields {
							if _, ok := field.ValueOf(db.Statement.Context, elem); !ok {
								db.RowsAffected++
								goto BEGIN
							}
						}
					}
				} else {

		return nil
	}); result.Error != nil || result.RowsAffected != 5 {
		t.Errorf("Failed to batch find, got error %v, rows affected: %v", result.Error, result.RowsAffected)
	}

	var sub2 []User
	// only offset
	if result := DB.Offset(3).Where("name = ?", users[0].Name).FindInBatches(&sub2, 2, func(tx *gorm.DB, batch int) error {
		return nil
	}); result.Error != nil || result.RowsAffected != 7 {

		db.Statement.Clauses["FROM"] = fromClause
	}
	if db.Error == nil && db.Statement.Schema != nil && !db.Statement.SkipHooks && db.Statement.Schema.AfterFind && db.RowsAffected > 0 {
		callMethod(db, func(value interface{}, tx *gorm.DB) bool {
			if i, ok := value.(AfterFindInterface); ok {
				db.AddError(i.AfterFind(tx))
				return true
			}
			return false
		})
	}

	}

	DB.Create(&users)

	query := make([]string, 0)
	sess := DB.Session(&gorm.Session{Logger: Tracer{
		Logger: DB.Config.Logger,
		Test: func(ctx context.Context, begin time.Time, fc func() (sql string, rowsAffected int64), err error) {
			sql, _ := fc()
			query = append(query, sql)
		},
	}})

	var result []User
	err := sess.
		Joins("Manager").
		Preload("Manager.Tools").

}

// Option gorm option interface
type Option interface {
	Apply(*Config) error
	AfterInitialize(*DB) error
}

// DB GORM DB definition
type DB struct {
	*Config
	Error        error
	RowsAffected int64
	Statement    *Statement
	clone        int
}

// Session session config when create session with Session() method
type Session struct {
	DryRun                   bool