1 files changed, 252 insertions, 0 deletions
diff --git a/vendor/futures-channel/tests/oneshot.rs b/vendor/futures-channel/tests/oneshot.rs
new file mode 100644
index 000000000..979cd8a15
--- /dev/null
+++ b/vendor/futures-channel/tests/oneshot.rs
@@ -0,0 +1,252 @@
+use futures::channel::oneshot::{self, Sender};
+use futures::executor::block_on;
+use futures::future::{poll_fn, FutureExt};
+use futures::task::{Context, Poll};
+use futures_test::task::panic_waker_ref;
+use std::sync::mpsc;
+use std::thread;
+
+#[test]
+fn smoke_poll() {
+    let (mut tx, rx) = oneshot::channel::<u32>();
+    let mut rx = Some(rx);
+    let f = poll_fn(|cx| {
+        assert!(tx.poll_canceled(cx).is_pending());
+        assert!(tx.poll_canceled(cx).is_pending());
+        drop(rx.take());
+        assert!(tx.poll_canceled(cx).is_ready());
+        assert!(tx.poll_canceled(cx).is_ready());
+        Poll::Ready(())
+    });
+
+    block_on(f);
+}
+
+#[test]
+fn cancel_notifies() {
+    let (mut tx, rx) = oneshot::channel::<u32>();
+
+    let t = thread::spawn(move || {
+        block_on(tx.cancellation());
+    });
+    drop(rx);
+    t.join().unwrap();
+}
+
+#[test]
+fn cancel_lots() {
+    let (tx, rx) = mpsc::channel::<(Sender<_>, mpsc::Sender<_>)>();
+    let t = thread::spawn(move || {
+        for (mut tx, tx2) in rx {
+            block_on(tx.cancellation());
+            tx2.send(()).unwrap();
+        }
+    });
+
+    for _ in 0..20000 {
+        let (otx, orx) = oneshot::channel::<u32>();
+        let (tx2, rx2) = mpsc::channel();
+        tx.send((otx, tx2)).unwrap();
+        drop(orx);
+        rx2.recv().unwrap();
+    }
+    drop(tx);
+
+    t.join().unwrap();
+}
+
+#[test]
+fn cancel_after_sender_drop_doesnt_notify() {
+    let (mut tx, rx) = oneshot::channel::<u32>();
+    let mut cx = Context::from_waker(panic_waker_ref());
+    assert_eq!(tx.poll_canceled(&mut cx), Poll::Pending);
+    drop(tx);
+    drop(rx);
+}
+
+#[test]
+fn close() {
+    let (mut tx, mut rx) = oneshot::channel::<u32>();
+    rx.close();
+    block_on(poll_fn(|cx| {
+        match rx.poll_unpin(cx) {
+            Poll::Ready(Err(_)) => {}
+            _ => panic!(),
+        };
+        assert!(tx.poll_canceled(cx).is_ready());
+        Poll::Ready(())
+    }));
+}
+
+#[test]
+fn close_wakes() {
+    let (mut tx, mut rx) = oneshot::channel::<u32>();
+    let (tx2, rx2) = mpsc::channel();
+    let t = thread::spawn(move || {
+        rx.close();
+        rx2.recv().unwrap();
+    });
+    block_on(tx.cancellation());
+    tx2.send(()).unwrap();
+    t.join().unwrap();
+}
+
+#[test]
+fn is_canceled() {
+    let (tx, rx) = oneshot::channel::<u32>();
+    assert!(!tx.is_canceled());
+    drop(rx);
+    assert!(tx.is_canceled());
+}
+
+#[test]
+fn cancel_sends() {
+    let (tx, rx) = mpsc::channel::<Sender<_>>();
+    let t = thread::spawn(move || {
+        for otx in rx {
+            let _ = otx.send(42);
+        }
+    });
+
+    for _ in 0..20000 {
+        let (otx, mut orx) = oneshot::channel::<u32>();
+        tx.send(otx).unwrap();
+
+        orx.close();
+        let _ = block_on(orx);
+    }
+
+    drop(tx);
+    t.join().unwrap();
+}
+
+// #[test]
+// fn spawn_sends_items() {
+//     let core = local_executor::Core::new();
+//     let future = ok::<_, ()>(1);
+//     let rx = spawn(future, &core);
+//     assert_eq!(core.run(rx).unwrap(), 1);
+// }
+//
+// #[test]
+// fn spawn_kill_dead_stream() {
+//     use std::thread;
+//     use std::time::Duration;
+//     use futures::future::Either;
+//     use futures::sync::oneshot;
+//
+//     // a future which never returns anything (forever accepting incoming
+//     // connections), but dropping it leads to observable side effects
+//     // (like closing listening sockets, releasing limited resources,
+//     // ...)
+//     #[derive(Debug)]
+//     struct Dead {
+//         // when dropped you should get Err(oneshot::Canceled) on the
+//         // receiving end
+//         done: oneshot::Sender<()>,
+//     }
+//     impl Future for Dead {
+//         type Item = ();
+//         type Error = ();
+//
+//         fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
+//             Ok(Poll::Pending)
+//         }
+//     }
+//
+//     // need to implement a timeout for the test, as it would hang
+//     // forever right now
+//     let (timeout_tx, timeout_rx) = oneshot::channel();
+//     thread::spawn(move || {
+//         thread::sleep(Duration::from_millis(1000));
+//         let _ = timeout_tx.send(());
+//     });
+//
+//     let core = local_executor::Core::new();
+//     let (done_tx, done_rx) = oneshot::channel();
+//     let future = Dead{done: done_tx};
+//     let rx = spawn(future, &core);
+//     let res = core.run(
+//         Ok::<_, ()>(())
+//         .into_future()
+//         .then(move |_| {
+//             // now drop the spawned future: maybe some timeout exceeded,
+//             // or some connection on this end was closed by the remote
+//             // end.
+//             drop(rx);
+//             // and wait for the spawned future to release its resources
+//             done_rx
+//         })
+//         .select2(timeout_rx)
+//     );
+//     match res {
+//         Err(Either::A((oneshot::Canceled, _))) => (),
+//         Ok(Either::B(((), _))) => {
+//             panic!("dead future wasn't canceled (timeout)");
+//         },
+//         _ => {
+//             panic!("dead future wasn't canceled (unexpected result)");
+//         },
+//     }
+// }
+//
+// #[test]
+// fn spawn_dont_kill_forgot_dead_stream() {
+//     use std::thread;
+//     use std::time::Duration;
+//     use futures::future::Either;
+//     use futures::sync::oneshot;
+//
+//     // a future which never returns anything (forever accepting incoming
+//     // connections), but dropping it leads to observable side effects
+//     // (like closing listening sockets, releasing limited resources,
+//     // ...)
+//     #[derive(Debug)]
+//     struct Dead {
+//         // when dropped you should get Err(oneshot::Canceled) on the
+//         // receiving end
+//         done: oneshot::Sender<()>,
+//     }
+//     impl Future for Dead {
+//         type Item = ();
+//         type Error = ();
+//
+//         fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
+//             Ok(Poll::Pending)
+//         }
+//     }
+//
+//     // need to implement a timeout for the test, as it would hang
+//     // forever right now
+//     let (timeout_tx, timeout_rx) = oneshot::channel();
+//     thread::spawn(move || {
+//         thread::sleep(Duration::from_millis(1000));
+//         let _ = timeout_tx.send(());
+//     });
+//
+//     let core = local_executor::Core::new();
+//     let (done_tx, done_rx) = oneshot::channel();
+//     let future = Dead{done: done_tx};
+//     let rx = spawn(future, &core);
+//     let res = core.run(
+//         Ok::<_, ()>(())
+//         .into_future()
+//         .then(move |_| {
+//             // forget the spawned future: should keep running, i.e. hit
+//             // the timeout below.
+//             rx.forget();
+//             // and wait for the spawned future to release its resources
+//             done_rx
+//         })
+//         .select2(timeout_rx)
+//     );
+//     match res {
+//         Err(Either::A((oneshot::Canceled, _))) => {
+//             panic!("forgotten dead future was canceled");
+//         },
+//         Ok(Either::B(((), _))) => (), // reached timeout
+//         _ => {
+//             panic!("forgotten dead future was canceled (unexpected result)");
+//         },
+//     }
+// }