*GetUser("bulk_5", Config{Account: false, Pets: 0, Toys: 3, Company: true, Manager: false, Team: 1, Languages: 3, Friends: 1}),
		*GetUser("bulk_6", Config{Account: true, Pets: 4, Toys: 3, Company: false, Manager: true, Team: 1, Languages: 3, Friends: 0}),
		*GetUser("bulk_7", Config{Account: true, Pets: 1, Toys: 3, Company: true, Manager: true, Team: 4, Languages: 3, Friends: 1}),

)

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")
	}

	ctx, cancel := context.WithTimeout(context.Background(), 500*time.Millisecond)
	defer cancel()
	txCtx := tx.WithContext(ctx)

	}
	return ""
}

const nestedRelationSplit = "__"

// NestedRelationName nested relationships like `Manager__Company`
func NestedRelationName(prefix, name string) string {
	return prefix + nestedRelationSplit + name
}

// SplitNestedRelationName Split nested relationships to `[]string{"Manager","Company"}`
func SplitNestedRelationName(name string) []string {
	return strings.Split(name, nestedRelationSplit)
}

			"create": {db: db},
			"query":  {db: db},
			"update": {db: db},
			"delete": {db: db},
			"row":    {db: db},
			"raw":    {db: db},
		},
	}
}

// callbacks gorm callbacks manager
type callbacks struct {
	processors map[string]*processor
}

type processor struct {
	db        *DB
	Clauses   []string
	fns       []func(*DB)
	callbacks []*callback
}

type callback struct {

		AssertObjEqual(t, user.Company, expect.Company, "ID", "Name")
	})

	t.Run("Manager", func(t *testing.T) {
		if user.Manager != nil {
			if user.ManagerID == nil {
				t.Errorf("Manager's foreign key should be saved")
			} else {
				var manager User
				db(unscoped).First(&manager, "id = ?", *user.ManagerID)
				AssertObjEqual(t, manager, user.Manager, "ID", "CreatedAt", "UpdatedAt", "DeletedAt", "Name", "Age",

	dryDB := DB.Session(&gorm.Session{DryRun: true, QueryFields: true})
	userQuery := "SELECT .*user.*id.*user.*created_at.*user.*updated_at.*user.*deleted_at.*user.*name.*user.*age" +
		".*user.*birthday.*user.*company_id.*user.*manager_id.*user.*active.* "

	r := dryDB.Table("`user`").Find(&User{}).Statement
	if !regexp.MustCompile(userQuery + "FROM `user`").MatchString(r.Statement.SQL.String()) {

		ID        uint
		Name      string
		ManagerID *uint
		Manager   *MigratePerson
	}

	DB.Migrator().DropTable(&MigratePerson{})

	if err := DB.AutoMigrate(&MigratePerson{}); err != nil {
		t.Fatalf("Failed to auto migrate, but got error %v", err)
	}

	if !DB.Migrator().HasConstraint("migrate_people", "fk_migrate_people_manager") {

	users := []User{
		{
			Name: "TestMergeNestedPreloadWithNestedJoin-1",
			Manager: &User{
				Name: "Alexis Manager",
				Tools: []Tools{
					{Name: "Alexis Tool 1"},
					{Name: "Alexis Tool 2"},
				},
			},
		},
		{
			Name: "TestMergeNestedPreloadWithNestedJoin-2",
			Manager: &User{
				Name: "Jinzhu Manager",
				Tools: []Tools{
					{Name: "Jinzhu Tool 1"},
					{Name: "Jinzhu Tool 2"},

	}

	result = dryDB.Not(DB.Where("manager IS NULL").Where("age >= ?", 20)).Find(&User{})
	if !regexp.MustCompile("SELECT \\* FROM .*users.* WHERE NOT \\(manager IS NULL AND age >= .+\\) AND .users.\\..deleted_at. IS NULL").MatchString(result.Statement.SQL.String()) {
		t.Fatalf("Build NOT condition, but got %v", result.Statement.SQL.String())
	}

	result = dryDB.Not(DB.Where("manager IS NULL").Or("age >= ?", 20)).Find(&User{})