Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 176 insertions, 0 deletions

diff --git a/third_party/rust/tokio/tests/time_delay.rs b/third_party/rust/tokio/tests/time_delay.rs
new file mode 100644
index 0000000000..e763ae03be
--- /dev/null
+++ b/third_party/rust/tokio/tests/time_delay.rs
@@ -0,0 +1,176 @@
+#![warn(rust_2018_idioms)]
+#![cfg(feature = "full")]
+
+use tokio::time::{self, Duration, Instant};
+use tokio_test::{assert_pending, task};
+
+macro_rules! assert_elapsed {
+    ($now:expr, $ms:expr) => {{
+        let elapsed = $now.elapsed();
+        let lower = ms($ms);
+
+        // Handles ms rounding
+        assert!(
+            elapsed >= lower && elapsed <= lower + ms(1),
+            "actual = {:?}, expected = {:?}",
+            elapsed,
+            lower
+        );
+    }};
+}
+
+#[tokio::test]
+async fn immediate_delay() {
+    time::pause();
+
+    let now = Instant::now();
+
+    // Ready!
+    time::delay_until(now).await;
+    assert_elapsed!(now, 0);
+}
+
+#[tokio::test]
+async fn delayed_delay_level_0() {
+    time::pause();
+
+    for &i in &[1, 10, 60] {
+        let now = Instant::now();
+
+        time::delay_until(now + ms(i)).await;
+
+        assert_elapsed!(now, i);
+    }
+}
+
+#[tokio::test]
+async fn sub_ms_delayed_delay() {
+    time::pause();
+
+    for _ in 0..5 {
+        let now = Instant::now();
+        let deadline = now + ms(1) + Duration::new(0, 1);
+
+        time::delay_until(deadline).await;
+
+        assert_elapsed!(now, 1);
+    }
+}
+
+#[tokio::test]
+async fn delayed_delay_wrapping_level_0() {
+    time::pause();
+
+    time::delay_for(ms(5)).await;
+
+    let now = Instant::now();
+    time::delay_until(now + ms(60)).await;
+
+    assert_elapsed!(now, 60);
+}
+
+#[tokio::test]
+async fn reset_future_delay_before_fire() {
+    time::pause();
+
+    let now = Instant::now();
+
+    let mut delay = task::spawn(time::delay_until(now + ms(100)));
+    assert_pending!(delay.poll());
+
+    let mut delay = delay.into_inner();
+
+    delay.reset(Instant::now() + ms(200));
+    delay.await;
+
+    assert_elapsed!(now, 200);
+}
+
+#[tokio::test]
+async fn reset_past_delay_before_turn() {
+    time::pause();
+
+    let now = Instant::now();
+
+    let mut delay = task::spawn(time::delay_until(now + ms(100)));
+    assert_pending!(delay.poll());
+
+    let mut delay = delay.into_inner();
+
+    delay.reset(now + ms(80));
+    delay.await;
+
+    assert_elapsed!(now, 80);
+}
+
+#[tokio::test]
+async fn reset_past_delay_before_fire() {
+    time::pause();
+
+    let now = Instant::now();
+
+    let mut delay = task::spawn(time::delay_until(now + ms(100)));
+    assert_pending!(delay.poll());
+
+    let mut delay = delay.into_inner();
+
+    time::delay_for(ms(10)).await;
+
+    delay.reset(now + ms(80));
+    delay.await;
+
+    assert_elapsed!(now, 80);
+}
+
+#[tokio::test]
+async fn reset_future_delay_after_fire() {
+    time::pause();
+
+    let now = Instant::now();
+    let mut delay = time::delay_until(now + ms(100));
+
+    (&mut delay).await;
+    assert_elapsed!(now, 100);
+
+    delay.reset(now + ms(110));
+    delay.await;
+    assert_elapsed!(now, 110);
+}
+
+#[test]
+#[should_panic]
+fn creating_delay_outside_of_context() {
+    let now = Instant::now();
+
+    // This creates a delay outside of the context of a mock timer. This tests
+    // that it will panic.
+    let _fut = time::delay_until(now + ms(500));
+}
+
+#[should_panic]
+#[tokio::test]
+async fn greater_than_max() {
+    const YR_5: u64 = 5 * 365 * 24 * 60 * 60 * 1000;
+
+    time::delay_until(Instant::now() + ms(YR_5)).await;
+}
+
+const NUM_LEVELS: usize = 6;
+const MAX_DURATION: u64 = (1 << (6 * NUM_LEVELS)) - 1;
+
+#[should_panic]
+#[tokio::test]
+async fn exactly_max() {
+    // TODO: this should not panic but `time::ms()` is acting up
+    time::delay_for(ms(MAX_DURATION)).await;
+}
+
+#[tokio::test]
+async fn no_out_of_bounds_close_to_max() {
+    time::pause();
+    time::delay_for(ms(MAX_DURATION - 1)).await;
+}
+
+fn ms(n: u64) -> Duration {
+    Duration::from_millis(n)
+}