golang打开系统浏览器

项目的日常接口测试中有个需求是: 输入需要测试买手id, 打开浏览器进行自动登录,于是就有了如下的代码

golang打开系统浏览器，代码如下：

package desktop

import (
    "fmt"
    "os/exec"
    "runtime"
)

var commands = map[string]string{
    "windows": "start",
    "darwin":  "open",
    "linux":   "xdg-open",
}

var Version = "0.1.0"

// Open calls the OS default program for uri
func Open(uri string) error {
    run, ok := commands[runtime.GOOS]
    if !ok {
        return fmt.Errorf("don't know how to open things on %s platform", runtime.GOOS)
    }

    cmd := exec.Command(run, uri)
    return cmd.Start()
}

从上面的代码可以看出：打开浏览器是通过调用各个平台打开文件的命令来实现。如果系统没有安装对应文件的打开工具，
cmd.Start应该会返回err。
osx苹果平台的open命令的参数如果是一个url，则会调用系统默认的浏览器打开指定的URL。

open -h
Usage: open [-e] [-t] [-f] [-W] [-R] [-n] [-g] [-h] [-b <bundle identifier>] [-a <application>] [filenames] [--args arguments]
Help: Open opens files from a shell.
      By default, opens each file using the default application for that file.
      If the file is in the form of a URL, the file will be opened as a URL.
Options:
      -a 通过指定的应用打开
      -b 通过指定标示符的应用打开
      -e 通过编辑器打开
      -t 通过默认的编辑器打开
      -f 从标准输入读取输入内容并用编辑器打开
      -F  --fresh       Launches the app fresh, that is, without restoring windows. Saved persistent state is lost, excluding Untitled documents.
      -R, --reveal      Selects in the Finder instead of opening.
      -W, --wait-apps   Blocks until the used applications are closed (even if they were already running).
          --args        All remaining arguments are passed in argv to the application's main() function instead of opened.
      -n, --new 新开一个进程打开指定的文件
      -j, --hide        Launches the app hidden.
      -g, --background  后台打开
      -h, --header      Searches header file locations for headers matching the given filenames, and opens them.