package main

import (
	"os"
	"os/exec"
	"strings"
	"testing"
)

func TestUnknownSubcommandExits(t *testing.T) {
	if os.Getenv("DISPATCH_CHILD") == "1" {
		os.Args = []string{"agent-system", "not-a-command"}
		main()
		return
	}
	cmd := exec.Command(os.Args[0], "-test.run=TestUnknownSubcommandExits")
	cmd.Env = append(os.Environ(), "DISPATCH_CHILD=1")
	out, err := cmd.CombinedOutput()
	if err == nil {
		t.Fatalf("未知子命令应非零退出：%s", out)
	}
	if !strings.Contains(string(out), "未知子命令") {
		t.Fatalf("输出：%s", out)
	}
	if strings.Contains(string(out), "agent-system starting") || strings.Contains(string(out), "serving") {
		t.Fatalf("未知子命令落入了服务路径：%s", out)
	}
}