From 43a97878ce14b72f0981164f87f2e35e14151312 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 11:22:09 +0200
Subject: Adding upstream version 110.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../rust/futures-0.1.31/tests/ready_queue.rs       | 164 +++++++++++++++++++++
 1 file changed, 164 insertions(+)
 create mode 100644 third_party/rust/futures-0.1.31/tests/ready_queue.rs

(limited to 'third_party/rust/futures-0.1.31/tests/ready_queue.rs')

diff --git a/third_party/rust/futures-0.1.31/tests/ready_queue.rs b/third_party/rust/futures-0.1.31/tests/ready_queue.rs
new file mode 100644
index 0000000000..b0dc2375ba
--- /dev/null
+++ b/third_party/rust/futures-0.1.31/tests/ready_queue.rs
@@ -0,0 +1,164 @@
+extern crate futures;
+
+use std::panic::{self, AssertUnwindSafe};
+
+use futures::prelude::*;
+use futures::Async::*;
+use futures::future;
+use futures::stream::FuturesUnordered;
+use futures::sync::oneshot;
+
+trait AssertSendSync: Send + Sync {}
+impl AssertSendSync for FuturesUnordered<()> {}
+
+#[test]
+fn basic_usage() {
+    future::lazy(move || {
+        let mut queue = FuturesUnordered::new();
+        let (tx1, rx1) = oneshot::channel();
+        let (tx2, rx2) = oneshot::channel();
+        let (tx3, rx3) = oneshot::channel();
+
+        queue.push(rx1);
+        queue.push(rx2);
+        queue.push(rx3);
+
+        assert!(!queue.poll().unwrap().is_ready());
+
+        tx2.send("hello").unwrap();
+
+        assert_eq!(Ready(Some("hello")), queue.poll().unwrap());
+        assert!(!queue.poll().unwrap().is_ready());
+
+        tx1.send("world").unwrap();
+        tx3.send("world2").unwrap();
+
+        assert_eq!(Ready(Some("world")), queue.poll().unwrap());
+        assert_eq!(Ready(Some("world2")), queue.poll().unwrap());
+        assert_eq!(Ready(None), queue.poll().unwrap());
+
+        Ok::<_, ()>(())
+    }).wait().unwrap();
+}
+
+#[test]
+fn resolving_errors() {
+    future::lazy(move || {
+        let mut queue = FuturesUnordered::new();
+        let (tx1, rx1) = oneshot::channel();
+        let (tx2, rx2) = oneshot::channel();
+        let (tx3, rx3) = oneshot::channel();
+
+        queue.push(rx1);
+        queue.push(rx2);
+        queue.push(rx3);
+
+        assert!(!queue.poll().unwrap().is_ready());
+
+        drop(tx2);
+
+        assert!(queue.poll().is_err());
+        assert!(!queue.poll().unwrap().is_ready());
+
+        drop(tx1);
+        tx3.send("world2").unwrap();
+
+        assert!(queue.poll().is_err());
+        assert_eq!(Ready(Some("world2")), queue.poll().unwrap());
+        assert_eq!(Ready(None), queue.poll().unwrap());
+
+        Ok::<_, ()>(())
+    }).wait().unwrap();
+}
+
+#[test]
+fn dropping_ready_queue() {
+    future::lazy(move || {
+        let mut queue = FuturesUnordered::new();
+        let (mut tx1, rx1) = oneshot::channel::<()>();
+        let (mut tx2, rx2) = oneshot::channel::<()>();
+        let (mut tx3, rx3) = oneshot::channel::<()>();
+
+        queue.push(rx1);
+        queue.push(rx2);
+        queue.push(rx3);
+
+        assert!(!tx1.poll_cancel().unwrap().is_ready());
+        assert!(!tx2.poll_cancel().unwrap().is_ready());
+        assert!(!tx3.poll_cancel().unwrap().is_ready());
+
+        drop(queue);
+
+        assert!(tx1.poll_cancel().unwrap().is_ready());
+        assert!(tx2.poll_cancel().unwrap().is_ready());
+        assert!(tx3.poll_cancel().unwrap().is_ready());
+
+        Ok::<_, ()>(())
+    }).wait().unwrap();
+}
+
+#[test]
+fn stress() {
+    const ITER: usize = 300;
+
+    use std::sync::{Arc, Barrier};
+    use std::thread;
+
+    for i in 0..ITER {
+        let n = (i % 10) + 1;
+
+        let mut queue = FuturesUnordered::new();
+
+        for _ in 0..5 {
+            let barrier = Arc::new(Barrier::new(n + 1));
+
+            for num in 0..n {
+                let barrier = barrier.clone();
+                let (tx, rx) = oneshot::channel();
+
+                queue.push(rx);
+
+                thread::spawn(move || {
+                    barrier.wait();
+                    tx.send(num).unwrap();
+                });
+            }
+
+            barrier.wait();
+
+            let mut sync = queue.wait();
+
+            let mut rx: Vec<_> = (&mut sync)
+                .take(n)
+                .map(|res| res.unwrap())
+                .collect();
+
+            assert_eq!(rx.len(), n);
+
+            rx.sort();
+
+            for num in 0..n {
+                assert_eq!(rx[num], num);
+            }
+
+            queue = sync.into_inner();
+        }
+    }
+}
+
+#[test]
+fn panicking_future_dropped() {
+    future::lazy(move || {
+        let mut queue = FuturesUnordered::new();
+        queue.push(future::poll_fn(|| -> Poll<i32, i32> {
+            panic!()
+        }));
+
+        let r = panic::catch_unwind(AssertUnwindSafe(|| queue.poll()));
+        assert!(r.is_err());
+        assert!(queue.is_empty());
+        assert_eq!(Ready(None), queue.poll().unwrap());
+
+        Ok::<_, ()>(())
+    }).wait().unwrap();
+}
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