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use super::Queue;
use crate::sync::mpsc::channel;
use crate::sync::Arc;
use crate::thread;
#[test]
fn smoke() {
unsafe {
let queue = Queue::with_additions(0, (), ());
queue.push(1);
queue.push(2);
assert_eq!(queue.pop(), Some(1));
assert_eq!(queue.pop(), Some(2));
assert_eq!(queue.pop(), None);
queue.push(3);
queue.push(4);
assert_eq!(queue.pop(), Some(3));
assert_eq!(queue.pop(), Some(4));
assert_eq!(queue.pop(), None);
}
}
#[test]
fn peek() {
unsafe {
let queue = Queue::with_additions(0, (), ());
queue.push(vec![1]);
// Ensure the borrowchecker works
match queue.peek() {
Some(vec) => {
assert_eq!(&*vec, &[1]);
}
None => unreachable!(),
}
match queue.pop() {
Some(vec) => {
assert_eq!(&*vec, &[1]);
}
None => unreachable!(),
}
}
}
#[test]
fn drop_full() {
unsafe {
let q: Queue<Box<_>> = Queue::with_additions(0, (), ());
q.push(Box::new(1));
q.push(Box::new(2));
}
}
#[test]
fn smoke_bound() {
unsafe {
let q = Queue::with_additions(0, (), ());
q.push(1);
q.push(2);
assert_eq!(q.pop(), Some(1));
assert_eq!(q.pop(), Some(2));
assert_eq!(q.pop(), None);
q.push(3);
q.push(4);
assert_eq!(q.pop(), Some(3));
assert_eq!(q.pop(), Some(4));
assert_eq!(q.pop(), None);
}
}
#[test]
fn stress() {
unsafe {
stress_bound(0);
stress_bound(1);
}
unsafe fn stress_bound(bound: usize) {
let count = if cfg!(miri) { 1000 } else { 100000 };
let q = Arc::new(Queue::with_additions(bound, (), ()));
let (tx, rx) = channel();
let q2 = q.clone();
let _t = thread::spawn(move || {
for _ in 0..count {
loop {
match q2.pop() {
Some(1) => break,
Some(_) => panic!(),
None => {}
}
}
}
tx.send(()).unwrap();
});
for _ in 0..count {
q.push(1);
}
rx.recv().unwrap();
}
}
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