}
		case <-timer.C:
			timer.Reset(settleTime / 10)
		}
	}
	t.Fatalf("timeout after %v waiting for %v", fatalWaitingTime, sig)
}

// quiesce waits until we can be reasonably confident that all pending signals
// have been delivered by the OS.
func quiesce() {
	// The kernel will deliver a signal as a thread returns
	// from a syscall. If the only active thread is sleeping,

	veryLongDuration = 1000 * time.Hour     // an arbitrary upper bound on the test's running time
)

// quiescent returns an arbitrary duration by which the program should have
// completed any remaining work and reached a steady (idle) state.
func quiescent(t *testing.T) time.Duration {
	deadline, ok := t.Deadline()
	if !ok {
		return 5 * time.Second
	}

	PGTHA_FILEDATA    = 0x08
	PGTHA_THREAD      = 0x04
	PGTHA_PTAG        = 0x02
	PGTHA_COMMANDLONG = 0x01
	PGTHA_THREADFAST  = 0x80
	PGTHA_FILEPATH    = 0x40
	PGTHA_THDSIGMASK  = 0x20
	// thread quiece mode
	QUIESCE_TERM       int32 = 1
	QUIESCE_FORCE      int32 = 2
	QUIESCE_QUERY      int32 = 3
	QUIESCE_FREEZE     int32 = 4
	QUIESCE_UNFREEZE   int32 = 5
	FREEZE_THIS_THREAD int32 = 6

Luego, cuando llega tu turno, haces un trabajo "productivo" real 🤓, procesas el menú, decides lo que quieres, lo que quiere esa persona 😍, pagas 💸, verificas que das el billete o tarjeta correctos, verificas que te cobren correctamente, que el pedido tiene los artículos correctos, etc.