vendor/crossbeam-deque-0.8.4/tests/steal.rs

use crossbeam_deque::Steal::Success;
use crossbeam_deque::{Injector, Worker};

#[test]
fn steal_fifo() {
    let w = Worker::new_fifo();
    for i in 1..=3 {
        w.push(i);
    }

    let s = w.stealer();
    assert_eq!(s.steal(), Success(1));
    assert_eq!(s.steal(), Success(2));
    assert_eq!(s.steal(), Success(3));
}

#[test]
fn steal_lifo() {
    let w = Worker::new_lifo();
    for i in 1..=3 {
        w.push(i);
    }

    let s = w.stealer();
    assert_eq!(s.steal(), Success(1));
    assert_eq!(s.steal(), Success(2));
    assert_eq!(s.steal(), Success(3));
}

#[test]
fn steal_injector() {
    let q = Injector::new();
    for i in 1..=3 {
        q.push(i);
    }

    assert_eq!(q.steal(), Success(1));
    assert_eq!(q.steal(), Success(2));
    assert_eq!(q.steal(), Success(3));
}

#[test]
fn steal_batch_fifo_fifo() {
    let w = Worker::new_fifo();
    for i in 1..=4 {
        w.push(i);
    }

    let s = w.stealer();
    let w2 = Worker::new_fifo();

    assert_eq!(s.steal_batch(&w2), Success(()));
    assert_eq!(w2.pop(), Some(1));
    assert_eq!(w2.pop(), Some(2));
}

#[test]
fn steal_batch_lifo_lifo() {
    let w = Worker::new_lifo();
    for i in 1..=4 {
        w.push(i);
    }

    let s = w.stealer();
    let w2 = Worker::new_lifo();

    assert_eq!(s.steal_batch(&w2), Success(()));
    assert_eq!(w2.pop(), Some(2));
    assert_eq!(w2.pop(), Some(1));
}

#[test]
fn steal_batch_fifo_lifo() {
    let w = Worker::new_fifo();
    for i in 1..=4 {
        w.push(i);
    }

    let s = w.stealer();
    let w2 = Worker::new_lifo();

    assert_eq!(s.steal_batch(&w2), Success(()));
    assert_eq!(w2.pop(), Some(1));
    assert_eq!(w2.pop(), Some(2));
}

#[test]
fn steal_batch_lifo_fifo() {
    let w = Worker::new_lifo();
    for i in 1..=4 {
        w.push(i);
    }

    let s = w.stealer();
    let w2 = Worker::new_fifo();

    assert_eq!(s.steal_batch(&w2), Success(()));
    assert_eq!(w2.pop(), Some(2));
    assert_eq!(w2.pop(), Some(1));
}

#[test]
fn steal_batch_injector_fifo() {
    let q = Injector::new();
    for i in 1..=4 {
        q.push(i);
    }

    let w2 = Worker::new_fifo();
    assert_eq!(q.steal_batch(&w2), Success(()));
    assert_eq!(w2.pop(), Some(1));
    assert_eq!(w2.pop(), Some(2));
}

#[test]
fn steal_batch_injector_lifo() {
    let q = Injector::new();
    for i in 1..=4 {
        q.push(i);
    }

    let w2 = Worker::new_lifo();
    assert_eq!(q.steal_batch(&w2), Success(()));
    assert_eq!(w2.pop(), Some(1));
    assert_eq!(w2.pop(), Some(2));
}

#[test]
fn steal_batch_and_pop_fifo_fifo() {
    let w = Worker::new_fifo();
    for i in 1..=6 {
        w.push(i);
    }

    let s = w.stealer();
    let w2 = Worker::new_fifo();

    assert_eq!(s.steal_batch_and_pop(&w2), Success(1));
    assert_eq!(w2.pop(), Some(2));
    assert_eq!(w2.pop(), Some(3));
}

#[test]
fn steal_batch_and_pop_lifo_lifo() {
    let w = Worker::new_lifo();
    for i in 1..=6 {
        w.push(i);
    }

    let s = w.stealer();
    let w2 = Worker::new_lifo();

    assert_eq!(s.steal_batch_and_pop(&w2), Success(3));
    assert_eq!(w2.pop(), Some(2));
    assert_eq!(w2.pop(), Some(1));
}

#[test]
fn steal_batch_and_pop_fifo_lifo() {
    let w = Worker::new_fifo();
    for i in 1..=6 {
        w.push(i);
    }

    let s = w.stealer();
    let w2 = Worker::new_lifo();

    assert_eq!(s.steal_batch_and_pop(&w2), Success(1));
    assert_eq!(w2.pop(), Some(2));
    assert_eq!(w2.pop(), Some(3));
}

#[test]
fn steal_batch_and_pop_lifo_fifo() {
    let w = Worker::new_lifo();
    for i in 1..=6 {
        w.push(i);
    }

    let s = w.stealer();
    let w2 = Worker::new_fifo();

    assert_eq!(s.steal_batch_and_pop(&w2), Success(3));
    assert_eq!(w2.pop(), Some(2));
    assert_eq!(w2.pop(), Some(1));
}

#[test]
fn steal_batch_and_pop_injector_fifo() {
    let q = Injector::new();
    for i in 1..=6 {
        q.push(i);
    }

    let w2 = Worker::new_fifo();
    assert_eq!(q.steal_batch_and_pop(&w2), Success(1));
    assert_eq!(w2.pop(), Some(2));
    assert_eq!(w2.pop(), Some(3));
}

#[test]
fn steal_batch_and_pop_injector_lifo() {
    let q = Injector::new();
    for i in 1..=6 {
        q.push(i);
    }

    let w2 = Worker::new_lifo();
    assert_eq!(q.steal_batch_and_pop(&w2), Success(1));
    assert_eq!(w2.pop(), Some(2));
    assert_eq!(w2.pop(), Some(3));
}