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)

		return
	}
}

func TestJoinCount(t *testing.T) {
	companyA := Company{Name: "A"}
	companyB := Company{Name: "B"}
	DB.Create(&companyA)
	DB.Create(&companyB)

	user := User{Name: "kingGo", CompanyID: &companyB.ID}
	DB.Create(&user)

	query := DB.Model(&User{}).Joins("Company")

	var total int64
	query.Count(&total)

	var result User

	}

	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"

	}
}

func TestFirstOrCreateWithPrimaryKey(t *testing.T) {
	company := Company{ID: 100, Name: "company100_with_primarykey"}
	DB.FirstOrCreate(&company)

	if company.ID != 100 {
		t.Errorf("invalid primary key after creating, got %v", company.ID)
	}

	companies := []Company{
		{ID: 101, Name: "company101_with_primarykey"},
		{ID: 102, Name: "company102_with_primarykey"},
	}
	DB.Create(&companies)

			References:  []Reference{{"ID", "User", "OwnerID", "Toy", "", true}, {"", "", "OwnerType", "Toy", "users", false}},
		},
		{
			Name: "Company", Type: schema.BelongsTo, Schema: "User", FieldSchema: "Company",
			References: []Reference{{"ID", "Company", "CompanyID", "User", "", false}},
		},
		{
			Name: "Manager", Type: schema.BelongsTo, Schema: "User", FieldSchema: "User",

	}

	DB.First(&result, user.ID)
	if result.Name != "new company name" {
		t.Errorf("name should be %v, but got %v", user.Company.Name, result.Name)
	}
}

func TestIdempotentSave(t *testing.T) {
	create := Company{
		Name: "company_idempotent",
	}
	DB.Create(&create)

	var company Company
	if err := DB.Find(&company, "id = ?", create.ID).Error; err != nil {

	}

	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++ {

	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;"`

		*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}),

            "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",