non-testable method, because of uncertainity

UnTestableDate

public String getTimeOfDay() {
    Date time = new Date(); //new Date() will return current time. So the value of it will change in every hour.
    if (time.getHours() >= 0 && time.getHours() < 6) {
      return "Night";
    }
    if (time.getHours() >= 6 && time.getHours() < 12) {
      return "Morning";
    }
    if (time.getHours() >= 12 && time.getHours() < 18) {
      return "Afternoon";
    }
    return "Evening";
  }