1use std::time::Duration;
 2
 3pub fn duration_alt_display(duration: Duration) -> String {
 4    let hours = duration.as_secs() / 3600;
 5    let minutes = (duration.as_secs() % 3600) / 60;
 6    let seconds = duration.as_secs() % 60;
 7
 8    if hours > 0 {
 9        format!("{hours}h {minutes}m {seconds}s")
10    } else if minutes > 0 {
11        format!("{minutes}m {seconds}s")
12    } else {
13        format!("{seconds}s")
14    }
15}
16
17#[cfg(test)]
18mod tests {
19    use super::*;
20
21    #[test]
22    fn test_duration_alt_display() {
23        use duration_alt_display as f;
24        assert_eq!("0s", f(Duration::from_secs(0)));
25        assert_eq!("59s", f(Duration::from_secs(59)));
26        assert_eq!("1m 0s", f(Duration::from_secs(60)));
27        assert_eq!("10m 0s", f(Duration::from_secs(600)));
28        assert_eq!("1h 0m 0s", f(Duration::from_secs(3600)));
29        assert_eq!("3h 2m 1s", f(Duration::from_secs(3600 * 3 + 60 * 2 + 1)));
30        assert_eq!("23h 59m 59s", f(Duration::from_secs(3600 * 24 - 1)));
31        assert_eq!("100h 0m 0s", f(Duration::from_secs(3600 * 100)));
32    }
33}