}

	if count := tx.Model(&item).Association("Contents").Count(); count != 3 {
		t.Errorf("expected %d contents, got %d", 3, count)
	}

	var contents []ItemContent
	if err := tx.Find(&contents).Error; err != nil {
		t.Errorf("failed to find contents, got error: %v", err)
	}
	if len(contents) != 3 {
		t.Errorf("expected %d contents, got %d", 3, len(contents))
	}

	// test delete

	}
	Scan(rows, tx, ScanInitialized)
	return tx.Error
}

// Connection uses a db connection to execute an arbitrary number of commands in fc. When finished, the connection is
// returned to the connection pool.
func (db *DB) Connection(fc func(tx *DB) error) (err error) {
	if db.Error != nil {
		return db.Error
	}

	tx := db.getInstance()
	sqlDB, err := tx.DB()
	if err != nil {
		return
	}

	user := User{Name: "jinzhu", Account: Account{Number: "1"}}

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

	if err := DB.Model(&user).Association("Languages").Replace(Account{Number: "2"}); err == nil {
		t.Error("expected association error to be not nil")
	}

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

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

	user.Pets = []*Pet{{Name: "pet1"}, {Name: "pet2"}}
	if err := DB.Save(&user).Error; err != nil {
		t.Fatalf("errors happened when update: %v", err)
	}

	var user2 User
	DB.Preload("Pets").Find(&user2, "id = ?", user.ID)

		t.Fatalf("no error should happen when migrate scanner, valuer struct, got error %v", err)
	}

	data := SerializerStruct{}

	if err := DB.Create(&data).Error; err != nil {
		t.Fatalf("failed to create data, got error %v", err)
	}

	var result SerializerStruct
	if err := DB.First(&result, data.ID).Error; err != nil {
		t.Fatalf("failed to query data, got error %v", err)
	}

		t.Errorf("should return record not found error, but got %v", err)
	}

	DB.Delete(&namedUser)

	var result8 NamedUser
	if err := DB.Where("name1 = @name OR name2 = @name", map[string]interface{}{"name": "jinzhu-new"}).First(&result8).Error; err == nil || !errors.Is(err, gorm.ErrRecordNotFound) {
		t.Errorf("should return record not found error, but got %v", err)
	}

			{AssociationEmptyUserID: &id, Name: "foo"},
		},
	}

	err := DB.Session(&gorm.Session{FullSaveAssociations: true}).Create(&user).Error
	if err != nil {
		t.Fatalf("Failed to create, got error: %v", err)
	}

	var result AssociationEmptyUser
	err = DB.Preload("Pets").First(&result, &id).Error
	if err != nil {
		t.Fatalf("Failed to find, got error: %v", err)
	}

	AssertEqual(t, result, user)
}

		t.Fatalf("failed to create data from map, got error: %v", err)
	}

	var result User
	if err := DB.Where("name = ?", "create_from_map").First(&result).Error; err != nil || result.Age != 18 {
		t.Fatalf("failed to create from map, got error %v", err)
	}

	if err := DB.Model(&User{}).Create(map[string]interface{}{"name": "create_from_map_1", "age": 18}).Error; err != nil {

		}

		if err := tx.First(&User{}, "name = ?", user.Name).Error; err != nil {
			t.Fatalf("Should find saved record")
		}

		return errors.New("the error message")
	})

	if err != nil && err.Error() != "the error message" {
		t.Fatalf("Transaction return error will equal the block returns error")
	}

	if err := DB.First(&User{}, "name = ?", "transaction-block").Error; err == nil {

		t.Errorf("Should got no error when creating data, but got %v", err)
	}

	if err := DB.Model(&data).Update("password", EncryptedData("xnewpass")).Error; err == nil {
		t.Errorf("Should failed to update data with invalid data")
	}

	if err := DB.Model(&data).Update("password", EncryptedData("newpass")).Error; err != nil {
		t.Errorf("Should got no error update data with valid data, but got %v", err)
	}