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Home Backend Development Golang How to pass protobuf object as a row to sqlmock.AddRow in golang?

How to pass protobuf object as a row to sqlmock.AddRow in golang?

Feb 11, 2024 am 11:03 AM

如何将 protobuf 对象作为一行传递给 golang 中的 sqlmock.AddRow?

php小编小新在这里为大家介绍一个问题:如何将 protobuf 对象作为一行传递给 golang 中的 sqlmock.AddRow?在使用 golang 开发中,我们经常会遇到需要将 protobuf 对象转换为数据库行的情况。而 sqlmock 是一个常用的 mock 数据库操作的工具,但是如何将 protobuf 对象传递给 sqlmock 的 AddRow 方法却是一个需要解决的问题。接下来,我们将详细介绍如何解决这个问题,让大家能够更好地应用 protobuf 和 sqlmock。

问题内容

我正在尝试使用 sqlmock 对我的 go 代码进行单元测试。 这是我试图测试的原始代码。

func enrollcourse(db *gorm.db, user_id string ,course_id string) error {
    user := &usermodels.user{}
    ref := db.first(user, "uuid = ?", user_id)
    userpb := user.protobuf()
    fmt.printf("user name %+v", user.name)
    ....
}
Copy after login

这是我的单元测试

func TestEnrollCourse(t *testing.T){
    db, mock, err := sqlmock.New()
    if err != nil {
        t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
    }
    defer db.Close()

    rows := sqlmock.NewRows([]string{"user_id","user_name"}).
        AddRow(1, "John")
    mock.ExpectQuery(regexp.QuoteMeta(`SELECT * FROM "users" WHERE uuid = $1`)).WithArgs("user-fd3746c8-d32f-4fb8-8f6a-b6d72dcf2969").WillReturnRows(rows)
    
    gdb, err := gorm.Open(postgres.New(postgres.Config{
                       Conn: db,
               }), &gorm.Config{})

    enrollCourse(gdb, "user-fd3746c8-d32f-4fb8-8f6a-b6d72dcf2969", "english_course")
    ....
}
Copy after login

我期待 fmt.printf("user name %+v", user.name) 打印用户名,但它为零。 如何正确地将 protobuf 对象传递给 addrow?

解决方法

您用于 AddRow 的数据类型似乎是字符串。在 sqlmock 中使用 protobuf 的最佳方法是借助存根文件中创建的构造函数来创建对象,并将其以字符串形式序列化并存储。然后在实际方法(enrollCourse)中,您可以获取此序列化消息并将 unmarshal 转换为适当的模型。

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