202407251323 go flag 别在init中使用

flag.StringVar(&appConfig, "conf", filepath.Join(env.ConfDir(), "app.toml"), "app config file")
flag.Parse()

flag 别在 init 中使用，否则在 go test 的时候会强制校验入参

参考：
go test flag: flag provided but not defined

flag.Parse() is being called before your flag is defined.
You have to make sure that all flag definitions happen before calling flag.Parse(), usually by defining all flags inside init() functions.