switch runtime.GOOS {
	case "windows":
		return delay - 17*Millisecond
	default:
		t.Fatal("adjustDelay unimplemented on " + runtime.GOOS)
		return 0
	}
}

func TestSleep(t *testing.T) {
	const delay = 100 * Millisecond
	go func() {
		Sleep(delay / 2)
		Interrupt()
	}()
	start := Now()
	Sleep(delay)
	delayadj := adjustDelay(t, delay)
	duration := Since(start)