t.Errorf("Error happened when append company to user, got %v", err)
	}

	if users[0].CompanyID == nil || users[1].CompanyID == nil || *users[0].CompanyID != *users[1].CompanyID {
		t.Errorf("user's company id should exists and equal, but its: %v, %v", users[0].CompanyID, users[1].CompanyID)
	}

	DB.Model(&users[0]).Association("Company").Delete(&company)

	}

	user.Company = Company{Name: "company-belongs-to-association"}
	user.Manager = &User{Name: "manager-belongs-to-association"}
	if err := DB.Save(&user).Error; err != nil {
		t.Fatalf("errors happened when update: %v", err)
	}

	var user2 User
	DB.Preload("Company").Preload("Manager").Find(&user2, "id = ?", user.ID)
	CheckUser(t, user2, user)

	user.Company.Name += "new"
	user.Manager.Name += "new"

	Birthday  *time.Time
	Account   Account
	Pets      []*Pet
	NamedPet  *Pet
	Toys      []Toy   `gorm:"polymorphic:Owner"`
	Tools     []Tools `gorm:"polymorphicType:Type;polymorphicId:CustomID"`
	CompanyID *int
	Company   Company
	ManagerID *uint
	Manager   *User
	Team      []User     `gorm:"foreignkey:ManagerID"`
	Languages []Language `gorm:"many2many:UserSpeak;"`
	Friends   []*User    `gorm:"many2many:user_friends;"`

	}

	for i := 0; i < config.Tools; i++ {
		user.Tools = append(user.Tools, Tools{Name: name + "_tool_" + strconv.Itoa(i+1)})
	}

	if config.Company {
		user.Company = Company{Name: "company-" + name}
	}

	if config.Manager {
		user.Manager = GetUser(name+"_manager", Config{})
	}

	for i := 0; i < config.Team; i++ {

		"`Table`.`nAme`":     {"Table", "nAme"},
		"my_table.*":         {"my_table", "*"},
		"`my_table`.*":       {"my_table", "*"},
		"User__Company.*":    {"User__Company", "*"},
		"`User__Company`.*":  {"User__Company", "*"},
		`"User__Company".*`:  {"User__Company", "*"},
		`"table"."*"`:        {"", ""},
	} {
		if table, column := matchName(k); table != v[0] || column != v[1] {

		*GetUser("delete_slice_with_associations1", Config{Account: true, Pets: 4, Toys: 1, Company: true, Manager: true, Team: 1, Languages: 1, Friends: 4}),
		*GetUser("delete_slice_with_associations2", Config{Account: true, Pets: 3, Toys: 2, Company: true, Manager: true, Team: 2, Languages: 2, Friends: 3}),
		*GetUser("delete_slice_with_associations3", Config{Account: true, Pets: 2, Toys: 3, Company: true, Manager: true, Team: 3, Languages: 3, Friends: 2}),

	}

	joinTable2 := ns.JoinTableName("UserLanguage")
	if joinTable2 != "public.user_language" {
		t.Errorf("invalid join table generated, got %v", joinTable2)
	}

	tableName := ns.TableName("Company")
	if tableName != "public.company" {
		t.Errorf("invalid table name generated, got %v", tableName)
	}

	columdName := ns.ColumnName("", "NameCID")
	if columdName != "name_cid" {

)

func TestCountWithGroup(t *testing.T) {
	DB.Create([]Company{
		{Name: "company_count_group_a"},
		{Name: "company_count_group_a"},
		{Name: "company_count_group_a"},
		{Name: "company_count_group_b"},
		{Name: "company_count_group_c"},
	})

	var count1 int64
	if err := DB.Model(&Company{}).Where("name = ?", "company_count_group_a").Group("name").Count(&count1).Error; err != nil {

	}
	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)
}

            "publisher": "Collins Crime Club (London)",
            "type": "Hardcover",
            "pages": 256
        },
        {
            "year": 1934,
            "publisher": "Dodd Mead and Company (New York)",
            "type": "Hardcover",
            "pages": 302
        },
        {
            "year": 2011,
            "publisher": "Harper Collins",
            "type": "Paperback",