func runCmdInternal(dir string, cmd []string) error {
exec := exec.Command(cmd[0], cmd[1:]...)
exec.Dir = dir
exec.Stdin = os.Stdin
exec.Stdout = os.Stdout
exec.Stderr = os.Stderr
err := exec.Run()
return err
}
// execution helper
func execCmd(cmd string) bool {
log.Println("Exec:", cmd)
exec := exec.Command(strings.Fields(cmd)[0], strings.Fields(cmd)[1:]...)
err := exec.Run()
if err != nil {
return false
}
return true
}
func TestInvalidArg() {
// stdin, stdout, stderr
c := "gich" + exeExt
cmd, err := exec.Run(c, []string{c, "ZZZ"}, nil, "", exec.DevNull, exec.Pipe, exec.DevNull)
if err != nil {
panic("InvalidArg: " + err.String())
}
buf, err := ioutil.ReadAll(cmd.Stdout)
if err != nil {
panic("InvalidArg read:" + err.String())
}
if string(buf) != "" {
panic("InvalidArg helpMsg: got " + string(buf))
}
if err = cmd.Close(); err != nil {
panic("InvalidArg close: " + err.String())
}
}
func TestNoArgs() {
// stdin, stdout, stderr
c := "gich" + exeExt
cmd, err := exec.Run(c, []string{c}, nil, "", exec.DevNull, exec.Pipe, exec.DevNull)
if err != nil {
panic("NoArgs: " + err.String())
}
buf, err := ioutil.ReadAll(cmd.Stdout)
if err != nil {
panic("NoArgs read:" + err.String())
}
if string(buf) != helpMsg {
panic("NoArgs helpMsg: got " + string(buf))
}
if err = cmd.Close(); err != nil {
panic("NoArgs close: " + err.String())
}
}
func TestFlagHelp() {
// stdin, stdout, stderr
c := "./gich" + exeExt
cmd, err := exec.Run(c, []string{c, "-help"}, nil, "", exec.DevNull, exec.Pipe, exec.DevNull)
if err != nil {
panic("-help: " + err.String())
}
buf, err := ioutil.ReadAll(cmd.Stdout)
if err != nil {
panic("-help read:" + err.String())
}
if string(buf) != helpMsg {
panic("-help helpMsg: got " + string(buf))
}
if err = cmd.Close(); err != nil {
panic("-help close: " + err.String())
}
}
func TestMisc() {
// stdin, stdout, stderr
c := "gich" + exeExt
cmd, err := exec.Run(c, []string{c, "cat"}, nil, "", exec.DevNull, exec.Pipe, exec.DevNull)
if err != nil {
panic("TestMisc: " + err.String())
}
buf, err := ioutil.ReadAll(cmd.Stdout)
if err != nil {
panic("TestMisc read:" + err.String())
}
if string(buf) != "/bin/cat\n" {
panic("TestMisc cat: got " + string(buf))
}
if err = cmd.Close(); err != nil {
panic("-s close: " + err.String())
}
}
func TestFlagS1() {
// stdin, stdout, stderr
c := "gich" + exeExt
cmd, err := exec.Run(c, []string{c, "-s", "invalid_arg"}, nil, "", exec.DevNull, exec.Pipe, exec.DevNull)
if err != nil {
panic("-s: " + err.String())
}
buf, err := ioutil.ReadAll(cmd.Stdout)
if err != nil {
panic("-s read:" + err.String())
}
if string(buf) != "None\n" {
panic("-s : got " + string(buf))
}
if err = cmd.Close(); err != nil {
panic("-s close: " + err.String())
}
}
func main() {
if cmd, e := exec.Run("/bin/ls", nil, nil, exec.DevNull, exec.Pipe, exec.MergeWithStdout); e == nil {
b, _ := ioutil.ReadAll(cmd.Stdout)
println("output: " + string(b))
}
}