182 lines
4.0 KiB
Rust
182 lines
4.0 KiB
Rust
#![allow(clippy::bool_assert_comparison)]
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use concurrent_queue::{ConcurrentQueue, PopError, PushError};
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#[cfg(not(target_family = "wasm"))]
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use easy_parallel::Parallel;
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#[cfg(not(target_family = "wasm"))]
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use std::sync::atomic::{AtomicUsize, Ordering};
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#[cfg(target_family = "wasm")]
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use wasm_bindgen_test::wasm_bindgen_test as test;
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#[test]
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fn smoke() {
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let q = ConcurrentQueue::unbounded();
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q.push(7).unwrap();
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assert_eq!(q.pop(), Ok(7));
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q.push(8).unwrap();
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assert_eq!(q.pop(), Ok(8));
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assert!(q.pop().is_err());
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}
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#[test]
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fn len_empty_full() {
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let q = ConcurrentQueue::unbounded();
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assert_eq!(q.len(), 0);
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assert_eq!(q.is_empty(), true);
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q.push(()).unwrap();
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assert_eq!(q.len(), 1);
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assert_eq!(q.is_empty(), false);
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q.pop().unwrap();
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assert_eq!(q.len(), 0);
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assert_eq!(q.is_empty(), true);
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}
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#[test]
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fn len() {
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let q = ConcurrentQueue::unbounded();
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assert_eq!(q.len(), 0);
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for i in 0..50 {
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q.push(i).unwrap();
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assert_eq!(q.len(), i + 1);
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}
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for i in 0..50 {
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q.pop().unwrap();
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assert_eq!(q.len(), 50 - i - 1);
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}
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assert_eq!(q.len(), 0);
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}
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#[test]
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fn close() {
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let q = ConcurrentQueue::unbounded();
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assert_eq!(q.push(10), Ok(()));
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assert!(!q.is_closed());
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assert!(q.close());
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assert!(q.is_closed());
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assert!(!q.close());
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assert_eq!(q.push(20), Err(PushError::Closed(20)));
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assert_eq!(q.pop(), Ok(10));
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assert_eq!(q.pop(), Err(PopError::Closed));
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}
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#[cfg(not(target_family = "wasm"))]
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#[test]
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fn spsc() {
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const COUNT: usize = if cfg!(miri) { 100 } else { 100_000 };
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let q = ConcurrentQueue::unbounded();
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Parallel::new()
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.add(|| {
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for i in 0..COUNT {
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loop {
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if let Ok(x) = q.pop() {
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assert_eq!(x, i);
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break;
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}
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}
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}
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assert!(q.pop().is_err());
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})
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.add(|| {
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for i in 0..COUNT {
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q.push(i).unwrap();
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}
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})
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.run();
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}
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#[cfg(not(target_family = "wasm"))]
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#[test]
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fn mpmc() {
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const COUNT: usize = if cfg!(miri) { 100 } else { 25_000 };
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const THREADS: usize = 4;
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let q = ConcurrentQueue::<usize>::unbounded();
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let v = (0..COUNT).map(|_| AtomicUsize::new(0)).collect::<Vec<_>>();
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Parallel::new()
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.each(0..THREADS, |_| {
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for _ in 0..COUNT {
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let n = loop {
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if let Ok(x) = q.pop() {
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break x;
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}
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};
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v[n].fetch_add(1, Ordering::SeqCst);
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}
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})
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.each(0..THREADS, |_| {
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for i in 0..COUNT {
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q.push(i).unwrap();
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}
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})
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.run();
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for c in v {
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assert_eq!(c.load(Ordering::SeqCst), THREADS);
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}
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}
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#[cfg(not(target_family = "wasm"))]
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#[test]
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fn drops() {
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const RUNS: usize = if cfg!(miri) { 20 } else { 100 };
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const STEPS: usize = if cfg!(miri) { 100 } else { 10_000 };
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static DROPS: AtomicUsize = AtomicUsize::new(0);
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#[derive(Debug, PartialEq)]
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struct DropCounter;
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impl Drop for DropCounter {
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fn drop(&mut self) {
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DROPS.fetch_add(1, Ordering::SeqCst);
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}
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}
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for _ in 0..RUNS {
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let steps = fastrand::usize(0..STEPS);
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let additional = fastrand::usize(0..1000);
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DROPS.store(0, Ordering::SeqCst);
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let q = ConcurrentQueue::unbounded();
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Parallel::new()
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.add(|| {
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for _ in 0..steps {
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while q.pop().is_err() {}
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}
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})
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.add(|| {
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for _ in 0..steps {
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q.push(DropCounter).unwrap();
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}
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})
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.run();
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for _ in 0..additional {
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q.push(DropCounter).unwrap();
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}
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assert_eq!(DROPS.load(Ordering::SeqCst), steps);
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drop(q);
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assert_eq!(DROPS.load(Ordering::SeqCst), steps + additional);
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}
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}
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