import (
	"os"
	"os/signal"
	"syscall"
	"testing"
	"time"
)

func runTestSetgid() bool {
	c := make(chan bool)
	go func() {
		C.setgid(0)
		c <- true
	}()
	select {
	case <-c:
		return true
	case <-time.After(5 * time.Second):
		return false
	}

}

func testSetgid(t *testing.T) {
	if !runTestSetgid() {
		t.Error("setgid hung")
	}

	// Now try it again after using signal.Notify.