我是Golang的新手。我试图使用go-sqlmock模拟我的postgres，但我得到了这个错误
{“time”：“2023-10- 01 T18：07：05.495811+03：00”，“level”：“FATAL”，“prefix”：“-"，“file”：“repository.go”，“line”：“15”，“message”：“执行对ExecQuery 'insert into public'的查询调用时出错。“（“Id”，“Name”，“Email”）值（$1，$2，$3）'，带args [{Name：Ordinal：1 Value：e918 b 0 bc-76 f3 -4380-a1 fb-a14 ca 5a 08 fc 3} {姓名：序号：2数值：Jon Snow} {姓名：序号：3数值：email protected(https://stackoverflow.com/cdn-cgi/l/email-protection)}]，不期望，下一个期望是：ExpectedBegin =>期望数据库事务Begin”}
我试图测试的方法是添加到数据库用户。我谷歌这个错误，但不能的东西。为什么我得到这个错误？

myTest file

var user = &User{
    Id:    userIdUuid,
    Name:  "Jon Snow",
    Email: "[email protected]",
}
func TestUserRepository_create_whenEverythingIsOk(t *testing.T) {
    t.Parallel()
    //arrange
    db, mock, err := sqlmock.New()
    if err != nil {
        t.Fatalf("an error '%s' was not expoected when opening a stub database connection", err)
    }
    defer db.Close()
    mock.ExpectBegin()
    mock.ExpectExec(`insert into public."Users" ("Id", "Name", "Email") values ($1,$2,$3)`).WithArgs(user.Id, user.Name, user.Email)
    mock.ExpectCommit()
    repository := NewUserRepository(db)
    if err := repository.Create(*user); err != nil {
        t.Errorf("error was not expected while inserting user: %s", err)
    }

    if err := mock.ExpectationsWereMet(); err != nil {
        t.Errorf("there were unfulfilled expectations: %s", err)
    }
}
 
my repository func

func (repo *userRepository) Create(user User) (err error) {
    query := `insert into public."Users" ("Id", "Name", "Email") values ($1,$2,$3)`
    _, err := repo.db.Exec(query, user.Id, user.Name, user.Email)
    if err != nil {
        log.Fatalf("An error occurred while executing the query  %v", err)
    }
    return
}

    my db initilization
func NewDb() (*sql.DB, error) {
    var config configs.Config
    if err := viper.Unmarshal(&config); err != nil {
        fmt.Println(err)
        return nil, err
    }
    db, err := sql.Open("postgres", fmt.Sprintf("%s", config.PostgresConnection[0]["connectionstring"]))

    if err != nil {
        panic("failed to connect database")
    }
    if err := db.Ping(); err != nil {
        log.Fatalf("unable to reach database: %v", err)
    }
    return db, nil
}


func Installer(e *echo.Echo) {

    db, err := db_helper.NewDb()
    if err != nil {
        panic(err)
    }
    userRepo := entities.NewUserRepository(db)
    userService := entities.NewUserService(userRepo)
    controller := entities.NewUserHandler(userService)

    e.GET("api/user/:id", controller.GetById)
    e.POST("api/user", controller.Create)
    e.GET("api/user", controller.GetUsers)
}

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