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|
//! Test for larger tasks.
use async_executor::Executor;
use futures_lite::future::{self, block_on};
use futures_lite::prelude::*;
use std::sync::Arc;
use std::thread;
use std::time::Duration;
fn do_run<Fut: Future<Output = ()>>(mut f: impl FnMut(Arc<Executor<'static>>) -> Fut) {
// This should not run for longer than two minutes.
#[cfg(not(miri))]
let _stop_timeout = {
let (stop_timeout, stopper) = async_channel::bounded::<()>(1);
thread::spawn(move || {
block_on(async move {
let timeout = async {
async_io::Timer::after(Duration::from_secs(2 * 60)).await;
eprintln!("test timed out after 2m");
std::process::exit(1)
};
let _ = stopper.recv().or(timeout).await;
})
});
stop_timeout
};
let ex = Arc::new(Executor::new());
// Test 1: Use the `run` command.
block_on(ex.run(f(ex.clone())));
// Test 2: Loop on `tick`.
block_on(async {
let ticker = async {
loop {
ex.tick().await;
}
};
f(ex.clone()).or(ticker).await
});
// Test 3: Run on many threads.
thread::scope(|scope| {
let (_signal, shutdown) = async_channel::bounded::<()>(1);
for _ in 0..16 {
let shutdown = shutdown.clone();
let ex = &ex;
scope.spawn(move || block_on(ex.run(shutdown.recv())));
}
block_on(f(ex.clone()));
});
// Test 4: Tick loop on many threads.
thread::scope(|scope| {
let (_signal, shutdown) = async_channel::bounded::<()>(1);
for _ in 0..16 {
let shutdown = shutdown.clone();
let ex = &ex;
scope.spawn(move || {
block_on(async move {
let ticker = async {
loop {
ex.tick().await;
}
};
shutdown.recv().or(ticker).await
})
});
}
block_on(f(ex.clone()));
});
}
#[test]
fn smoke() {
do_run(|ex| async move { ex.spawn(async {}).await });
}
#[test]
fn yield_now() {
do_run(|ex| async move { ex.spawn(future::yield_now()).await })
}
#[test]
fn timer() {
do_run(|ex| async move {
ex.spawn(async_io::Timer::after(Duration::from_millis(5)))
.await;
})
}
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