blob: 0075f09426e05e7ab79f6b114a7113f2e17cec95 (
plain)
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
|
LL| |#![feature(coverage_attribute)]
LL| |#![feature(custom_inner_attributes)] // for #![rustfmt::skip]
LL| |#![feature(noop_waker)]
LL| |#![rustfmt::skip]
LL| |//@ edition: 2021
LL| |
LL| |#[coverage(off)]
LL| |async fn ready() -> u8 { 1 }
LL| |
LL| 1|async fn await_ready() -> u8 {
LL| 1| // await should be covered even if the function never yields
LL| 1| ready()
LL| 1| .await
LL| 1|}
LL| |
LL| 1|fn main() {
LL| 1| let mut future = Box::pin(await_ready());
LL| 1| executor::block_on(future.as_mut());
LL| 1|}
LL| |
LL| |mod executor {
LL| | use core::future::Future;
LL| | use core::pin::pin;
LL| | use core::task::{Context, Poll, Waker};
LL| |
LL| | #[coverage(off)]
LL| | pub fn block_on<F: Future>(mut future: F) -> F::Output {
LL| | let mut future = pin!(future);
LL| | let mut context = Context::from_waker(Waker::noop());
LL| |
LL| | loop {
LL| | if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
LL| | break val;
LL| | }
LL| | }
LL| | }
LL| |}
|
