package clause

// Limit limit clause
type Limit struct {
	Limit  *int
	Offset int
}

// Name where clause name
func (limit Limit) Name() string {
	return "LIMIT"
}

// Build build where clause
func (limit Limit) Build(builder Builder) {
	if limit.Limit != nil && *limit.Limit >= 0 {
		builder.WriteString("LIMIT ")
		builder.AddVar(builder, *limit.Limit)
	}
	if limit.Offset > 0 {

package schema

import (
	"regexp"
	"strings"

	"gorm.io/gorm/clause"
)

// reg match english letters and midline
var regEnLetterAndMidline = regexp.MustCompile(`^[\w-]+$`)

type CheckConstraint struct {
	Name       string
	Constraint string // length(phone) >= 10
	*Field
}

func (chk *CheckConstraint) GetName() string { return chk.Name }

func (chk *CheckConstraint) Build() (sql string, vars []interface{}) {

package tests_test

import (
	"fmt"
	"testing"

	. "gorm.io/gorm/utils/tests"
)

func BenchmarkCreate(b *testing.B) {
	user := *GetUser("bench", Config{})

	for x := 0; x < b.N; x++ {
		user.ID = 0
		DB.Create(&user)
	}
}

func BenchmarkFind(b *testing.B) {
	user := *GetUser("find", Config{})
	DB.Create(&user)

	for x := 0; x < b.N; x++ {
		DB.Find(&User{}, "id = ?", user.ID)
	}
}

package callbacks

import (
	"reflect"
	"testing"

	"gorm.io/gorm"
	"gorm.io/gorm/clause"
)

func TestLoadOrStoreVisitMap(t *testing.T) {
	var vm visitMap
	var loaded bool
	type testM struct {
		Name string
	}

	t1 := testM{Name: "t1"}
	t2 := testM{Name: "t2"}
	t3 := testM{Name: "t3"}

	vm = make(visitMap)
	if loaded = loadOrStoreVisitMap(&vm, reflect.ValueOf(&t1)); loaded {

package schema

import (
	"bytes"
	"context"
	"database/sql"
	"database/sql/driver"
	"encoding/gob"
	"encoding/json"
	"fmt"
	"reflect"
	"strings"
	"sync"
	"time"
)

var serializerMap = sync.Map{}

// RegisterSerializer register serializer
func RegisterSerializer(name string, serializer SerializerInterface) {
	serializerMap.Store(strings.ToLower(name), serializer)
}

// GetSerializer get serializer

package tests_test

import (
	"database/sql"
	"testing"
	"time"

	"gorm.io/gorm"
	. "gorm.io/gorm/utils/tests"
)

func TestUpdateHasOne(t *testing.T) {
	user := *GetUser("update-has-one", Config{})

	if err := DB.Create(&user).Error; err != nil {
		t.Fatalf("errors happened when create: %v", err)
	}

	user.Account = Account{Number: "account-has-one-association"}

	if err := DB.Save(&user).Error; err != nil {

package tests_test

import (
	"context"
	"errors"
	"sync"
	"testing"
	"time"

	"gorm.io/gorm"
	. "gorm.io/gorm/utils/tests"
)

func TestPreparedStmt(t *testing.T) {
	tx := DB.Session(&gorm.Session{PrepareStmt: true})

	if _, ok := tx.ConnPool.(*gorm.PreparedStmtDB); !ok {
		t.Fatalf("should assign PreparedStatement Manager back to database when using PrepareStmt mode")
	}

package tests_test

import (
	"context"
	"database/sql"
	"os"
	"reflect"
	"testing"

	"gorm.io/driver/mysql"
	"gorm.io/gorm"
	. "gorm.io/gorm/utils/tests"
)

type wrapperTx struct {
	*sql.Tx
	conn *wrapperConnPool
}

func (c *wrapperTx) PrepareContext(ctx context.Context, query string) (*sql.Stmt, error) {
	c.conn.got = append(c.conn.got, query)
	return c.Tx.PrepareContext(ctx, query)
}

package tests_test

import (
	"database/sql"
	"encoding/json"
	"errors"
	"regexp"
	"testing"

	"github.com/jinzhu/now"
	"gorm.io/gorm"
	. "gorm.io/gorm/utils/tests"
)

func TestSoftDelete(t *testing.T) {
	user := *GetUser("SoftDelete", Config{})
	DB.Save(&user)

	var count int64
	var age uint

	if DB.Model(&User{}).Where("name = ?", user.Name).Count(&count).Error != nil || count != 1 {

package tests_test

import (
	"database/sql/driver"
	"encoding/json"
	"errors"
	"reflect"
	"testing"
	"time"

	"gorm.io/gorm"
	. "gorm.io/gorm/utils/tests"
)

func TestEmbeddedStruct(t *testing.T) {
	type ReadOnly struct {
		ReadOnly *bool
	}

	type BasePost struct {
		Id    int64
		Title string
		URL   string
		ReadOnly
	}

	type Author struct {
		ID    string
		Name  string