"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{}) {

	case int:
		return strconv.FormatInt(int64(v), 10)
	case int8:
		return strconv.FormatInt(int64(v), 10)
	case int16:
		return strconv.FormatInt(int64(v), 10)
	case int32:
		return strconv.FormatInt(int64(v), 10)
	case int64:
		return strconv.FormatInt(v, 10)
	case uint:
		return strconv.FormatUint(uint64(v), 10)
	case uint8:
		return strconv.FormatUint(uint64(v), 10)
	case uint16:

		},
		{
			SQL:           "create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at, email, role, pass) values ($3, $4, $1, $2, $7, $8, $5, $6, $9, $10, $11)",
			NumericRegexp: regexp.MustCompile(`\$(\d+)`),

		Field1 uint32  `gorm:"column:field1"`
		Field2 float32 `gorm:"column:field2"`
	}

	if err := DB.AutoMigrate(&AutoIncrementStruct{}); err != nil {
		t.Fatalf("AutoMigrate err: %v", err)
	}

	const ROWS = 10
	for idx := 0; idx < ROWS; idx++ {
		if err := DB.Create(&AutoIncrementStruct{}).Error; err != nil {
			t.Fatalf("create auto_increment_struct fail, err: %v", err)
		}
	}

	switch reflectValue.Kind() {
	case reflect.Struct:
		switch rel.Type {
		case schema.HasMany, schema.Many2Many:
			tx.AddError(rel.Field.Set(tx.Statement.Context, reflectValue, reflect.MakeSlice(rel.Field.IndirectFieldType, 0, 10).Interface()))
		default:
			tx.AddError(rel.Field.Set(tx.Statement.Context, reflectValue, reflect.New(rel.Field.FieldType).Interface()))
		}
	case reflect.Slice, reflect.Array:
		for i := 0; i < reflectValue.Len(); i++ {

		t.Errorf("json marshal is not empty slice, got %v", string(r))
	}
}

func TestPreloadGoroutine(t *testing.T) {
	var wg sync.WaitGroup

	wg.Add(10)
	for i := 0; i < 10; i++ {
		go func() {
			defer wg.Done()
			var user2 []User
			tx := DB.Where("id = ?", 1).Session(&gorm.Session{})

			if err := tx.Preload("Team").Find(&user2).Error; err != nil {
				t.Error(err)

	}
}

func TestLimit(t *testing.T) {
	users := []User{
		{Name: "LimitUser1", Age: 1},
		{Name: "LimitUser2", Age: 10},
		{Name: "LimitUser3", Age: 20},
		{Name: "LimitUser4", Age: 10},
		{Name: "LimitUser5", Age: 20},
		{Name: "LimitUser6", Age: 20},
	}

	DB.Create(&users)

	var users1, users2, users3 []User

				schema.err = fmt.Errorf("invalid serializer type %v", serializerName)
			}
		}
	}

	if num, ok := field.TagSettings["AUTOINCREMENTINCREMENT"]; ok {
		field.AutoIncrementIncrement, _ = strconv.ParseInt(num, 10, 64)
	}

	if v, ok := field.TagSettings["DEFAULT"]; ok {
		field.HasDefaultValue = true
		field.DefaultValue = v
	}

	if num, ok := field.TagSettings["SIZE"]; ok {