packer-cn/packer/plugin/plugin_test.go

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package plugin
import (
"fmt"
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"github.com/mitchellh/packer/packer"
"os"
"os/exec"
"testing"
"time"
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)
type helperCommand byte
func (helperCommand) Run(packer.Environment, []string) int {
return 42
}
func (helperCommand) Synopsis() string {
return "1"
}
func helperProcess(s... string) *exec.Cmd {
cs := []string{"-test.run=TestHelperProcess", "--"}
cs = append(cs, s...)
env := []string{
"GO_WANT_HELPER_PROCESS=1",
"PACKER_PLUGIN_MIN_PORT=10000",
"PACKER_PLUGIN_MAX_PORT=25000",
}
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cmd := exec.Command(os.Args[0], cs...)
cmd.Env = append(env, os.Environ()...)
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return cmd
}
// This is not a real test. This is just a helper process kicked off by
// tests.
func TestHelperProcess(*testing.T) {
if os.Getenv("GO_WANT_HELPER_PROCESS") != "1" {
return
}
args := os.Args
for len(args) > 0 {
if args[0] == "--" {
args = args[1:]
break
}
args = args[1:]
}
if len(args) == 0 {
fmt.Fprintf(os.Stderr, "No command\n")
os.Exit(2)
}
cmd, args := args[0], args[1:]
switch cmd {
case "command":
ServeCommand(new(helperCommand))
case "start-timeout":
time.Sleep(1 * time.Minute)
os.Exit(1)
default:
fmt.Fprintf(os.Stderr, "Unknown command: %q\n", cmd)
os.Exit(2)
}
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}