Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 110 insertions, 0 deletions

diff --git a/third_party/rust/crossbeam-channel/tests/iter.rs b/third_party/rust/crossbeam-channel/tests/iter.rs
new file mode 100644
index 0000000000..463f3b0436
--- /dev/null
+++ b/third_party/rust/crossbeam-channel/tests/iter.rs
@@ -0,0 +1,110 @@
+//! Tests for iteration over receivers.
+
+use crossbeam_channel::unbounded;
+use crossbeam_utils::thread::scope;
+
+#[test]
+fn nested_recv_iter() {
+    let (s, r) = unbounded::<i32>();
+    let (total_s, total_r) = unbounded::<i32>();
+
+    scope(|scope| {
+        scope.spawn(move |_| {
+            let mut acc = 0;
+            for x in r.iter() {
+                acc += x;
+            }
+            total_s.send(acc).unwrap();
+        });
+
+        s.send(3).unwrap();
+        s.send(1).unwrap();
+        s.send(2).unwrap();
+        drop(s);
+        assert_eq!(total_r.recv().unwrap(), 6);
+    })
+    .unwrap();
+}
+
+#[test]
+fn recv_iter_break() {
+    let (s, r) = unbounded::<i32>();
+    let (count_s, count_r) = unbounded();
+
+    scope(|scope| {
+        scope.spawn(move |_| {
+            let mut count = 0;
+            for x in r.iter() {
+                if count >= 3 {
+                    break;
+                } else {
+                    count += x;
+                }
+            }
+            count_s.send(count).unwrap();
+        });
+
+        s.send(2).unwrap();
+        s.send(2).unwrap();
+        s.send(2).unwrap();
+        let _ = s.send(2);
+        drop(s);
+        assert_eq!(count_r.recv().unwrap(), 4);
+    })
+    .unwrap();
+}
+
+#[test]
+fn recv_try_iter() {
+    let (request_s, request_r) = unbounded();
+    let (response_s, response_r) = unbounded();
+
+    scope(|scope| {
+        scope.spawn(move |_| {
+            let mut count = 0;
+            loop {
+                for x in response_r.try_iter() {
+                    count += x;
+                    if count == 6 {
+                        return;
+                    }
+                }
+                request_s.send(()).unwrap();
+            }
+        });
+
+        for _ in request_r.iter() {
+            if response_s.send(2).is_err() {
+                break;
+            }
+        }
+    })
+    .unwrap();
+}
+
+#[test]
+fn recv_into_iter_owned() {
+    let mut iter = {
+        let (s, r) = unbounded::<i32>();
+        s.send(1).unwrap();
+        s.send(2).unwrap();
+        r.into_iter()
+    };
+
+    assert_eq!(iter.next().unwrap(), 1);
+    assert_eq!(iter.next().unwrap(), 2);
+    assert!(iter.next().is_none());
+}
+
+#[test]
+fn recv_into_iter_borrowed() {
+    let (s, r) = unbounded::<i32>();
+    s.send(1).unwrap();
+    s.send(2).unwrap();
+    drop(s);
+
+    let mut iter = (&r).into_iter();
+    assert_eq!(iter.next().unwrap(), 1);
+    assert_eq!(iter.next().unwrap(), 2);
+    assert!(iter.next().is_none());
+}