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coverage: Use Waker::noop in async tests

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This commit is contained in:
Zalathar 2023-12-15 16:38:27 +11:00
parent 604f185fae
commit 5764ccc5e8
9 changed files with 134 additions and 353 deletions
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41
tests/coverage/async.coverage
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@ -1,6 +1,8 @@
LL| |#![feature(coverage_attribute)]
LL| |#![feature(noop_waker)]
LL| |#![allow(unused_assignments, dead_code)]
LL| |
LL| |// compile-flags: --edition=2018 -C opt-level=1
LL| |// edition: 2018
LL| |// compile-flags: -Copt-level=1
LL| |
LL| 1|async fn c(x: u8) -> u8 {
LL| 1| if x == 8 {
@ -108,32 +110,21 @@
LL| 1|}
LL| |
LL| |mod executor {
LL| | use core::{
LL| | future::Future,
LL| | pin::Pin,
LL| | task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
LL| | };
LL| | use core::future::Future;
LL| | use core::pin::pin;
LL| | use core::task::{Context, Poll, Waker};
LL| |
LL| 1| pub fn block_on<F: Future>(mut future: F) -> F::Output {
LL| 1| let mut future = unsafe { Pin::new_unchecked(&mut future) };
LL| 1| use std::hint::unreachable_unchecked;
LL| 1| static VTABLE: RawWakerVTable = RawWakerVTable::new(
LL| 1| |_| unsafe { unreachable_unchecked() }, // clone
^0
LL| 1| |_| unsafe { unreachable_unchecked() }, // wake
^0
LL| 1| |_| unsafe { unreachable_unchecked() }, // wake_by_ref
^0
LL| 1| |_| (),
LL| 1| );
LL| 1| let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
LL| 1| let mut context = Context::from_waker(&waker);
LL| | #[coverage(off)]
LL| | pub fn block_on<F: Future>(mut future: F) -> F::Output {
LL| | let mut future = pin!(future);
LL| | let waker = Waker::noop();
LL| | let mut context = Context::from_waker(&waker);
LL| |
LL| | loop {
LL| 1| if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
LL| 1| break val;
LL| 0| }
LL| | if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
LL| | break val;
LL| | }
LL| | }
LL| 1| }
LL| | }
LL| |}