1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
#![warn(rust_2018_idioms)]
#![cfg(feature = "full")]
use tokio::time::{self, Duration, Instant};
use tokio_test::{assert_pending, assert_ready_eq, task};
use std::task::Poll;
#[tokio::test]
#[should_panic]
async fn interval_zero_duration() {
let _ = time::interval_at(Instant::now(), ms(0));
}
#[tokio::test]
async fn usage() {
time::pause();
let start = Instant::now();
// TODO: Skip this
time::advance(ms(1)).await;
let mut i = task::spawn(time::interval_at(start, ms(300)));
assert_ready_eq!(poll_next(&mut i), start);
assert_pending!(poll_next(&mut i));
time::advance(ms(100)).await;
assert_pending!(poll_next(&mut i));
time::advance(ms(200)).await;
assert_ready_eq!(poll_next(&mut i), start + ms(300));
assert_pending!(poll_next(&mut i));
time::advance(ms(400)).await;
assert_ready_eq!(poll_next(&mut i), start + ms(600));
assert_pending!(poll_next(&mut i));
time::advance(ms(500)).await;
assert_ready_eq!(poll_next(&mut i), start + ms(900));
assert_ready_eq!(poll_next(&mut i), start + ms(1200));
assert_pending!(poll_next(&mut i));
}
#[tokio::test]
async fn usage_stream() {
use tokio::stream::StreamExt;
let start = Instant::now();
let mut interval = time::interval(ms(10));
for _ in 0..3 {
interval.next().await.unwrap();
}
assert!(start.elapsed() > ms(20));
}
fn poll_next(interval: &mut task::Spawn<time::Interval>) -> Poll<Instant> {
interval.enter(|cx, mut interval| interval.poll_tick(cx))
}
fn ms(n: u64) -> Duration {
Duration::from_millis(n)
}
|
