rust/tests/coverage/async2.rs
Kevin Reid c48cdfe8ee Remove unnecessary lets and borrowing from Waker::noop() usage.
`Waker::noop()` now returns a `&'static Waker` reference, so it can be
passed directly to `Context` creation with no temporary lifetime issue.
2024-01-17 12:00:27 -08:00

51 lines
1.1 KiB
Rust

#![feature(coverage_attribute)]
#![feature(noop_waker)]
// edition: 2018
fn non_async_func() {
println!("non_async_func was covered");
let b = true;
if b {
println!("non_async_func println in block");
}
}
async fn async_func() {
println!("async_func was covered");
let b = true;
if b {
println!("async_func println in block");
}
}
async fn async_func_just_println() {
println!("async_func_just_println was covered");
}
fn main() {
println!("codecovsample::main");
non_async_func();
executor::block_on(async_func());
executor::block_on(async_func_just_println());
}
mod executor {
use core::future::Future;
use core::pin::pin;
use core::task::{Context, Poll, Waker};
#[coverage(off)]
pub fn block_on<F: Future>(mut future: F) -> F::Output {
let mut future = pin!(future);
let mut context = Context::from_waker(Waker::noop());
loop {
if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
break val;
}
}
}
}