type (
		Level0 struct {
			ID       uint
			Value    string
			Level1ID uint
		}
		Level1 struct {
			ID         uint
			Value      string
			Level2ID   *uint
			Level2_1ID *uint
			Level0s    []Level0 `json:",omitempty"`
		}
		Level2 struct {
			ID       uint
			Level1s  []Level1
			Level3ID uint
		}
		Level2_1 struct {
			ID       uint
			Level1s  []Level1 `json:",omitempty"`

func TestCompositePrimaryKeyWithAutoIncrement(t *testing.T) {
	type Product struct {
		ProductID    uint `gorm:"primaryKey;autoIncrement"`
		LanguageCode uint `gorm:"primaryKey"`
		Code         string
		Name         string
	}
	type ProductNonAutoIncrement struct {
		ProductID    uint `gorm:"primaryKey;autoIncrement:false"`
		LanguageCode uint `gorm:"primaryKey"`
		Code         string
		Name         string
	}

	type Toy struct {
		ID        int
		Name      string
		OwnerID   int
		OwnerType string
	}
	type User struct {
		ID  int
		Cat struct {
			Name string
			Toy  Toy   `gorm:"polymorphic:Owner;"`
			Toys []Toy `gorm:"polymorphic:Owner;"`
		} `gorm:"embedded;embeddedPrefix:cat_"`
		Dog struct {
			ID     int
			Name   string
			UserID int
			Toy    Toy   `gorm:"polymorphic:Owner;"`

		switch lowerVal {
		case Bool, Int, Uint, Float, String, Time, Bytes:
			field.DataType = lowerVal
		default:
			field.DataType = DataType(val)
		}
	}

	if field.Size == 0 {
		switch reflect.Indirect(fieldValue).Kind() {
		case reflect.Int, reflect.Int64, reflect.Uint, reflect.Uint64, reflect.Float64:
			field.Size = 64
		case reflect.Int8, reflect.Uint8:
			field.Size = 8

	type (
		Furniture struct {
			gorm.Model
			OwnerID *uint
		}

		Owner struct {
			gorm.Model
			Furnitures []Furniture
			CompanyID  *uint
			Company    Company
		}

		Building struct {
			gorm.Model
			Name    string
			OwnerID *uint
			Owner   Owner
		}
	)

	DB.Migrator().DropTable(&Building{}, &Owner{}, &Furniture{})

	}
}

func TestMigrateIgnoreRelations(t *testing.T) {
	type RelationModel1 struct {
		ID uint
	}
	type RelationModel2 struct {
		ID uint
	}
	type RelationModel3 struct {
		ID               uint
		RelationModel1ID uint
		RelationModel1   *RelationModel1
		RelationModel2ID uint
		RelationModel2   *RelationModel2 `gorm:"-:migration"`
	}

	var err error

	AssertEqual(t, newUser.CreatedAt, curTime)
	AssertEqual(t, newUser.UpdatedAt, curTime)
}

func TestCreateWithNoGORMPrimaryKey(t *testing.T) {
	type JoinTable struct {
		UserID   uint
		FriendID uint
	}

	DB.Migrator().DropTable(&JoinTable{})
	if err := DB.AutoMigrate(&JoinTable{}); err != nil {
		t.Errorf("no error should happen when auto migrate, but got %v", err)
	}

)

type Blog struct {
	ID         uint   `gorm:"primary_key"`
	Locale     string `gorm:"primary_key"`
	Subject    string
	Body       string
	Tags       []Tag `gorm:"many2many:blog_tags;"`
	SharedTags []Tag `gorm:"many2many:shared_blog_tags;ForeignKey:id;References:id"`
	LocaleTags []Tag `gorm:"many2many:locale_blog_tags;ForeignKey:id,locale;References:id"`
}

type Tag struct {
	ID     uint   `gorm:"primary_key"`

// not nil. Values of string type are immutable.
type string string

// int is a signed integer type that is at least 32 bits in size. It is a
// distinct type, however, and not an alias for, say, int32.
type int int

// uint is an unsigned integer type that is at least 32 bits in size. It is a
// distinct type, however, and not an alias for, say, uint32.
type uint uint

// uintptr is an integer type that is large enough to hold the bit pattern of

func (z *BitrotAlgorithm) DecodeMsg(dc *msgp.Reader) (err error) {
	{
		var zb0001 uint
		zb0001, err = dc.ReadUint()
		if err != nil {
			err = msgp.WrapError(err)
			return
		}
		(*z) = BitrotAlgorithm(zb0001)
	}
	return
}

// EncodeMsg implements msgp.Encodable
func (z BitrotAlgorithm) EncodeMsg(en *msgp.Writer) (err error) {
	err = en.WriteUint(uint(z))
	if err != nil {
		err = msgp.WrapError(err)
		return
	}