- // `Time` tests
-
- /// Time that can be advanced manually in tests.
- #[derive(Clone, Copy, Debug, PartialEq, Eq)]
- struct SinceEpoch(Duration);
-
- impl SinceEpoch {
- thread_local! {
- static ELAPSED: Cell<Duration> = core::cell::Cell::new(Duration::from_secs(0));
- }
-
- fn advance(duration: Duration) {
- Self::ELAPSED.with(|elapsed| elapsed.set(elapsed.get() + duration))
- }
- }
-
- impl Time for SinceEpoch {
- fn now() -> Self {
- Self(Self::duration_since_epoch())
- }
-
- fn duration_since(&self, earlier: Self) -> Duration {
- self.0 - earlier.0
- }
-
- fn duration_since_epoch() -> Duration {
- Self::ELAPSED.with(|elapsed| elapsed.get())
- }
-
- fn elapsed(&self) -> Duration {
- Self::duration_since_epoch() - self.0
- }
- }
-
- impl Sub<Duration> for SinceEpoch {
- type Output = Self;
-
- fn sub(self, other: Duration) -> Self {
- Self(self.0 - other)
- }
- }
-
- #[test]
- fn time_passes_when_advanced() {
- let now = SinceEpoch::now();
- assert_eq!(now.elapsed(), Duration::from_secs(0));
-
- SinceEpoch::advance(Duration::from_secs(1));
- SinceEpoch::advance(Duration::from_secs(1));
-
- let elapsed = now.elapsed();
- let later = SinceEpoch::now();
-
- assert_eq!(elapsed, Duration::from_secs(2));
- assert_eq!(later - elapsed, now);
- }
-
- #[test]
- fn time_never_passes_in_an_eternity() {
- let now = Eternity::now();
- let elapsed = now.elapsed();
- let later = Eternity::now();
-
- assert_eq!(now.elapsed(), Duration::from_secs(0));
- assert_eq!(later - elapsed, now);
- }
-
- // `Scorer` tests
-