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mod common;
use std::sync::Arc;
#[cfg(not(target_family = "wasm"))]
use std::thread;
use async_lock::Mutex;
use futures_lite::future;
use common::check_yields_when_contended;
#[cfg(target_family = "wasm")]
use wasm_bindgen_test::wasm_bindgen_test as test;
#[cfg(target_family = "wasm")]
wasm_bindgen_test::wasm_bindgen_test_configure!(run_in_browser);
#[test]
fn smoke() {
future::block_on(async {
let m = Mutex::new(());
drop(m.lock().await);
drop(m.lock().await);
})
}
#[cfg(all(feature = "std", not(target_family = "wasm")))]
#[test]
fn smoke_blocking() {
let m = Mutex::new(());
drop(m.lock_blocking());
drop(m.lock_blocking());
}
#[cfg(all(feature = "std", not(target_family = "wasm")))]
#[test]
fn smoke_arc_blocking() {
let m = Arc::new(Mutex::new(()));
drop(m.lock_arc_blocking());
drop(m.lock_arc_blocking());
}
#[test]
fn try_lock() {
let m = Mutex::new(());
*m.try_lock().unwrap() = ();
}
#[test]
fn into_inner() {
let m = Mutex::new(10i32);
assert_eq!(m.into_inner(), 10);
}
#[test]
fn get_mut() {
let mut m = Mutex::new(10i32);
*m.get_mut() = 20;
assert_eq!(m.into_inner(), 20);
}
#[cfg(not(target_family = "wasm"))]
#[test]
fn contention() {
future::block_on(async {
let (tx, rx) = flume::unbounded();
let tx = Arc::new(tx);
let mutex = Arc::new(Mutex::new(0i32));
let num_tasks = 100;
for _ in 0..num_tasks {
let tx = tx.clone();
let mutex = mutex.clone();
thread::spawn(|| {
future::block_on(async move {
let mut lock = mutex.lock().await;
*lock += 1;
tx.send_async(()).await.unwrap();
drop(lock);
})
});
}
for _ in 0..num_tasks {
rx.recv_async().await.unwrap();
}
let lock = mutex.lock().await;
assert_eq!(num_tasks, *lock);
});
}
#[test]
fn lifetime() {
// Show that the future keeps the mutex alive.
let _fut = {
let mutex = Arc::new(Mutex::new(0i32));
mutex.lock_arc()
};
}
#[test]
fn yields_when_contended() {
let m = Mutex::new(());
check_yields_when_contended(m.try_lock().unwrap(), m.lock());
let m = Arc::new(m);
check_yields_when_contended(m.try_lock_arc().unwrap(), m.lock_arc());
}
|
