Duration to String enhanced with tests

Adds checks for if a bit in a u8 is set or clear

src/duration_to_string/duration_to_string.rs

@@ -0,0 +1,38 @@
+use std::time::Duration;
+
+pub const SECONDS_IN_MINUTE: u32 = 60;
+pub const SECONDS_IN_HOUR: u32 = SECONDS_IN_MINUTE * 60;
+pub const SECONDS_IN_DAY: u32 = SECONDS_IN_HOUR * 24;
+
+pub fn duration_to_string(to_convert: Duration, show_zeros: Option<bool>) -> String {
+    const SECONDS_IN_DAY: u32 = 86400;
+    const SECONDS_IN_HOUR: u32 = 3600;
+    const SECONDS_IN_MINUTE: u32 = 60;
+
+    let should_show_zero = show_zeros.unwrap_or(false);
+    let mut total_seconds = to_convert.as_secs() as u32;
+    let mut parts = Vec::new();
+
+    let units = [
+        (SECONDS_IN_DAY, "day"),
+        (SECONDS_IN_HOUR, "hour"),
+        (SECONDS_IN_MINUTE, "minute"),
+        (1, "second"),
+    ];
+
+    for &(unit_seconds, unit_name) in &units {
+        let count = total_seconds / unit_seconds;
+        total_seconds %= unit_seconds;
+
+        if count > 0 || should_show_zero {
+            let label = if count == 1 {
+                unit_name.to_string()
+            } else {
+                format!("{}s", unit_name)
+            };
+            parts.push(format!("{} {}", count, label));
+        }
+    }
+
+    parts.join(" ")
+}

src/duration_to_string/mod.rs

@@ -0,0 +1,2 @@
+pub mod duration_to_string;
+mod tests;

src/duration_to_string/tests.rs

@@ -0,0 +1,43 @@
+use std::time::Duration;
+use crate::duration_to_string::duration_to_string::duration_to_string;
+
+#[cfg(test)]
+mod test {
+    use super::*;
+    use crate::duration_to_string::duration_to_string::*;
+
+    #[test]
+    fn multi_duration_to_string() {
+        let params: Vec<(&str, Duration, Option<bool>)> = vec![
+            ("1 second", Duration::from_secs(1), Some(false)),
+            ("4 seconds", Duration::from_secs(4), Some(false)),
+            ("1 minute", Duration::from_secs(SECONDS_IN_MINUTE as u64), Some(false)),
+            ("4 minutes", Duration::from_secs((SECONDS_IN_MINUTE * 4) as u64), Some(false)),
+            ("1 hour", Duration::from_secs(SECONDS_IN_HOUR as u64), Some(false)),
+            ("4 hours", Duration::from_secs((SECONDS_IN_HOUR * 4) as u64), Some(false)),
+            ("4 hours 5 minutes", Duration::from_secs((SECONDS_IN_HOUR * 4 + SECONDS_IN_MINUTE * 5) as u64), Some(false)),
+            ("1 day", Duration::from_secs(SECONDS_IN_DAY as u64), Some(false)),
+            ("0 days 0 hours 0 minutes 1 second", Duration::from_secs(1), Some(true)),
+            ("0 days 0 hours 0 minutes 4 seconds", Duration::from_secs(4), Some(true)),
+            ("0 days 0 hours 1 minute 0 seconds", Duration::from_secs(SECONDS_IN_MINUTE as u64), Some(true)),
+            ("0 days 0 hours 4 minutes 0 seconds", Duration::from_secs((SECONDS_IN_MINUTE * 4) as u64), Some(true)),
+            ("0 days 1 hour 0 minutes 0 seconds", Duration::from_secs(SECONDS_IN_HOUR as u64), Some(true)),
+            ("0 days 4 hours 0 minutes 0 seconds", Duration::from_secs((SECONDS_IN_HOUR * 4) as u64), Some(true)),
+            ("0 days 4 hours 5 minutes 0 seconds", Duration::from_secs((SECONDS_IN_HOUR * 4 + SECONDS_IN_MINUTE * 5) as u64), Some(true)),
+            ("1 day 0 hours 0 minutes 0 seconds", Duration::from_secs(SECONDS_IN_DAY as u64), Some(true)),
+            ("1 day 0 hours 0 minutes 1 second", Duration::from_secs((SECONDS_IN_DAY + 1) as u64), Some(true)),
+            ("1 second", Duration::from_secs(1), None),
+            ("4 seconds", Duration::from_secs(4), None),
+            ("1 minute", Duration::from_secs(SECONDS_IN_MINUTE as u64), None),
+            ("4 minutes", Duration::from_secs((SECONDS_IN_MINUTE * 4) as u64), None),
+            ("1 hour", Duration::from_secs(SECONDS_IN_HOUR as u64), None),
+            ("4 hours", Duration::from_secs((SECONDS_IN_HOUR * 4) as u64), None),
+            ("4 hours 5 minutes", Duration::from_secs((SECONDS_IN_HOUR * 4 + SECONDS_IN_MINUTE * 5) as u64), None),
+            ("1 day", Duration::from_secs(SECONDS_IN_DAY as u64), None),
+        ];
+
+        for (expected, actual, show) in params {
+            assert_eq!(expected, duration_to_string(actual, show));
+        }
+    }
+}