Subprozess-Signalabfangung und Isolationstests über Umgebungs-Flag-Trigger

package main
 
import (
	"os"
	"os/exec"
	"os/signal"
	"syscall"
	"testing"
	"time"
)
 
func TestSignalHandlingProcess(t *testing.T) {
	if os.Getenv("BE_SUBPROCESS") == "1" {
		sigChan := make(chan os.Signal, 1)
		signal.Notify(sigChan, syscall.SIGTERM)
		select {
		case sig := <-sigChan:
			if sig == syscall.SIGTERM {
				os.Exit(0)
			}
		case <-time.After(2 * time.Second):
			os.Exit(1)
		}
		return
	}
 
	cmd := exec.Command(os.Args[0], "-test.run=TestSignalHandlingProcess")
	cmd.Env = append(os.Environ(), "BE_SUBPROCESS=1")
	if err := cmd.Start(); err != nil {
		t.Fatalf("Failed to launch subprocess: %v", err)
	}
 
	time.Sleep(100 * time.Millisecond)
	_ = cmd.Process.Signal(syscall.SIGTERM)
	_ = cmd.Wait()
}