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67 lines
1.3 KiB
Rust
67 lines
1.3 KiB
Rust
#![feature(async_await)]
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use std::sync::Arc;
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use async_std::sync::Mutex;
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use async_std::task;
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use futures::channel::mpsc;
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use futures::prelude::*;
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#[test]
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fn smoke() {
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task::block_on(async {
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let m = Mutex::new(());
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drop(m.lock().await);
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drop(m.lock().await);
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})
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}
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#[test]
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fn try_lock() {
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let m = Mutex::new(());
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*m.try_lock().unwrap() = ();
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}
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#[test]
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fn into_inner() {
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let m = Mutex::new(10);
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assert_eq!(m.into_inner(), 10);
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}
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#[test]
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fn get_mut() {
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let mut m = Mutex::new(10);
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*m.get_mut() = 20;
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assert_eq!(m.into_inner(), 20);
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}
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#[test]
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fn contention() {
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task::block_on(async {
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let (tx, mut rx) = mpsc::unbounded();
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let tx = Arc::new(tx);
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let mutex = Arc::new(Mutex::new(0));
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let num_tasks = 10000;
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for _ in 0..num_tasks {
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let tx = tx.clone();
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let mutex = mutex.clone();
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task::spawn(async move {
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let mut lock = mutex.lock().await;
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*lock += 1;
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tx.unbounded_send(()).unwrap();
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drop(lock);
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});
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}
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for _ in 0..num_tasks {
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rx.next().await.unwrap();
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}
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let lock = mutex.lock().await;
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assert_eq!(num_tasks, *lock);
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});
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}
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