void main() {
    Timer m1;
    getMillis(m1);
    
    Timer m2;
    getMillis(m2);
    
    Timer m3;
    getMillis(m3);
    
    test(m1.nanos <= m2.nanos && m2.nanos <= m3.nanos);
    test(m1.seconds <= m2.seconds && m2.seconds <= m3.seconds);
    
    
    Timer n1;
    getNanos(n1);
    
    Timer n2;
    getNanos(n2);
    
    Timer n3;
    getNanos(n3);
    
    test(n1.nanos < n2.nanos && n2.nanos < n3.nanos);
    test(n1.seconds <= n2.seconds && n2.seconds <= n3.seconds);
    
    Time time;
    time.year = 999999;
    toTime(m1, time);
    
    test(time.year >= 2021);
    test(time.month >= 0 && time.month <= 11);
    test(time.day >= 1 && time.day <= 31);
    test(time.hours >= 0 && time.hours <= 59);
    test(time.minutes >= 0 && time.minutes <= 59);
    test(time.seconds >= 0 && time.seconds <= 60);
    test(time.millis >= 0 && time.millis <= 999);
    
    Timer m;
    toMillis(time, m);
    
    test(m.seconds == m1.seconds);
    test(m.nanos == m1.nanos);
}