Add tests for time_to_timestamp

Signed-off-by: Kévin Commaille <[email protected]>

Author: zecakeh

crates/matrix-sdk-sqlite/src/utils.rs

@@ -396,6 +396,8 @@ pub(crate) fn time_to_timestamp(time: SystemTime) -> i64 {
 
 #[cfg(test)]
 mod unit_tests {
+    use std::time::Duration;
+
     use super::*;
 
     #[test]
@@ -410,4 +412,13 @@ mod unit_tests {
     fn generating_zero_vars_panics() {
         repeat_vars(0);
     }
+
+    #[test]
+    fn test_time_to_timestamp() {
+        assert_eq!(time_to_timestamp(SystemTime::UNIX_EPOCH), 0);
+        assert_eq!(time_to_timestamp(SystemTime::UNIX_EPOCH + Duration::from_secs(60)), 60);
+
+        // Fallback value on overflow.
+        assert_eq!(time_to_timestamp(SystemTime::UNIX_EPOCH - Duration::from_secs(60)), 0);
+    }
 }