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#![cfg(feature = "unstable")]
use std::sync::Arc;
use std::time::Duration;
use async_std::sync::{Condvar, Mutex};
use async_std::task::{self, JoinHandle};
#[cfg(not(target_os = "unknown"))]
use async_std::task::spawn;
#[cfg(target_os = "unknown")]
use async_std::task::spawn_local as spawn;
#[cfg(target_arch = "wasm32")]
wasm_bindgen_test::wasm_bindgen_test_configure!(run_in_browser);
#[test]
#[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
fn wait_timeout_with_lock() {
task::block_on(async {
let pair = Arc::new((Mutex::new(false), Condvar::new()));
let pair2 = pair.clone();
spawn(async move {
let (m, c) = &*pair2;
let _g = m.lock().await;
task::sleep(Duration::from_millis(200)).await;
c.notify_one();
});
let (m, c) = &*pair;
let (_, wait_result) = c
.wait_timeout(m.lock().await, Duration::from_millis(50))
.await;
assert!(wait_result.timed_out());
})
}
#[test]
#[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
fn wait_timeout_without_lock() {
task::block_on(async {
let m = Mutex::new(false);
let c = Condvar::new();
let (_, wait_result) = c
.wait_timeout(m.lock().await, Duration::from_millis(10))
.await;
assert!(wait_result.timed_out());
})
}
#[test]
#[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
fn wait_timeout_until_timed_out() {
task::block_on(async {
let m = Mutex::new(false);
let c = Condvar::new();
let (_, wait_result) = c
.wait_timeout_until(m.lock().await, Duration::from_millis(100), |&mut started| {
started
})
.await;
assert!(wait_result.timed_out());
})
}
#[test]
#[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
fn notify_all() {
task::block_on(async {
let mut tasks: Vec<JoinHandle<()>> = Vec::new();
let pair = Arc::new((Mutex::new(0u32), Condvar::new()));
for _ in 0..10 {
let pair = pair.clone();
tasks.push(spawn(async move {
let (m, c) = &*pair;
let mut count = m.lock().await;
while *count == 0 {
count = c.wait(count).await;
}
*count += 1;
}));
}
// Give some time for tasks to start up
task::sleep(Duration::from_millis(50)).await;
let (m, c) = &*pair;
{
let mut count = m.lock().await;
*count += 1;
c.notify_all();
}
for t in tasks {
t.await;
}
let count = m.lock().await;
assert_eq!(11, *count);
})
}
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