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-rw-r--r--third_party/rust/futures/tests_disabled/stream.rs368
1 files changed, 368 insertions, 0 deletions
diff --git a/third_party/rust/futures/tests_disabled/stream.rs b/third_party/rust/futures/tests_disabled/stream.rs
new file mode 100644
index 0000000000..a4eec2c7aa
--- /dev/null
+++ b/third_party/rust/futures/tests_disabled/stream.rs
@@ -0,0 +1,368 @@
+use futures::channel::mpsc;
+use futures::channel::oneshot;
+use futures::executor::{block_on, block_on_stream};
+use futures::future::{err, ok};
+use futures::stream::{empty, iter_ok, poll_fn, Peekable};
+
+// mod support;
+// use support::*;
+
+pub struct Iter<I> {
+ iter: I,
+}
+
+pub fn iter<J, T, E>(i: J) -> Iter<J::IntoIter>
+where
+ J: IntoIterator<Item = Result<T, E>>,
+{
+ Iter { iter: i.into_iter() }
+}
+
+impl<I, T, E> Stream for Iter<I>
+where
+ I: Iterator<Item = Result<T, E>>,
+{
+ type Item = T;
+ type Error = E;
+
+ fn poll_next(&mut self, _: &mut Context<'_>) -> Poll<Option<T>, E> {
+ match self.iter.next() {
+ Some(Ok(e)) => Ok(Poll::Ready(Some(e))),
+ Some(Err(e)) => Err(e),
+ None => Ok(Poll::Ready(None)),
+ }
+ }
+}
+
+fn list() -> Box<Stream<Item = i32, Error = u32> + Send> {
+ let (tx, rx) = mpsc::channel(1);
+ tx.send(Ok(1)).and_then(|tx| tx.send(Ok(2))).and_then(|tx| tx.send(Ok(3))).forget();
+ Box::new(rx.then(|r| r.unwrap()))
+}
+
+fn err_list() -> Box<Stream<Item = i32, Error = u32> + Send> {
+ let (tx, rx) = mpsc::channel(1);
+ tx.send(Ok(1)).and_then(|tx| tx.send(Ok(2))).and_then(|tx| tx.send(Err(3))).forget();
+ Box::new(rx.then(|r| r.unwrap()))
+}
+
+#[test]
+fn map() {
+ assert_done(|| list().map(|a| a + 1).collect(), Ok(vec![2, 3, 4]));
+}
+
+#[test]
+fn map_err() {
+ assert_done(|| err_list().map_err(|a| a + 1).collect::<Vec<_>>(), Err(4));
+}
+
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+struct FromErrTest(u32);
+
+impl From<u32> for FromErrTest {
+ fn from(i: u32) -> Self {
+ Self(i)
+ }
+}
+
+#[test]
+fn from_err() {
+ assert_done(|| err_list().err_into().collect::<Vec<_>>(), Err(FromErrTest(3)));
+}
+
+#[test]
+fn fold() {
+ assert_done(|| list().fold(0, |a, b| ok::<i32, u32>(a + b)), Ok(6));
+ assert_done(|| err_list().fold(0, |a, b| ok::<i32, u32>(a + b)), Err(3));
+}
+
+#[test]
+fn filter() {
+ assert_done(|| list().filter(|a| ok(*a % 2 == 0)).collect(), Ok(vec![2]));
+}
+
+#[test]
+fn filter_map() {
+ assert_done(
+ || list().filter_map(|x| ok(if x % 2 == 0 { Some(x + 10) } else { None })).collect(),
+ Ok(vec![12]),
+ );
+}
+
+#[test]
+fn and_then() {
+ assert_done(|| list().and_then(|a| Ok(a + 1)).collect(), Ok(vec![2, 3, 4]));
+ assert_done(|| list().and_then(|a| err::<i32, u32>(a as u32)).collect::<Vec<_>>(), Err(1));
+}
+
+#[test]
+fn then() {
+ assert_done(|| list().then(|a| a.map(|e| e + 1)).collect(), Ok(vec![2, 3, 4]));
+}
+
+#[test]
+fn or_else() {
+ assert_done(|| err_list().or_else(|a| ok::<i32, u32>(a as i32)).collect(), Ok(vec![1, 2, 3]));
+}
+
+#[test]
+fn flatten() {
+ assert_done(|| list().map(|_| list()).flatten().collect(), Ok(vec![1, 2, 3, 1, 2, 3, 1, 2, 3]));
+}
+
+#[test]
+fn skip() {
+ assert_done(|| list().skip(2).collect(), Ok(vec![3]));
+}
+
+#[test]
+fn skip_passes_errors_through() {
+ let mut s = block_on_stream(iter(vec![Err(1), Err(2), Ok(3), Ok(4), Ok(5)]).skip(1));
+ assert_eq!(s.next(), Some(Err(1)));
+ assert_eq!(s.next(), Some(Err(2)));
+ assert_eq!(s.next(), Some(Ok(4)));
+ assert_eq!(s.next(), Some(Ok(5)));
+ assert_eq!(s.next(), None);
+}
+
+#[test]
+fn skip_while() {
+ assert_done(|| list().skip_while(|e| Ok(*e % 2 == 1)).collect(), Ok(vec![2, 3]));
+}
+#[test]
+fn take() {
+ assert_done(|| list().take(2).collect(), Ok(vec![1, 2]));
+}
+
+#[test]
+fn take_while() {
+ assert_done(|| list().take_while(|e| Ok(*e < 3)).collect(), Ok(vec![1, 2]));
+}
+
+#[test]
+fn take_passes_errors_through() {
+ let mut s = block_on_stream(iter(vec![Err(1), Err(2), Ok(3), Ok(4), Err(4)]).take(1));
+ assert_eq!(s.next(), Some(Err(1)));
+ assert_eq!(s.next(), Some(Err(2)));
+ assert_eq!(s.next(), Some(Ok(3)));
+ assert_eq!(s.next(), None);
+
+ let mut s = block_on_stream(iter(vec![Ok(1), Err(2)]).take(1));
+ assert_eq!(s.next(), Some(Ok(1)));
+ assert_eq!(s.next(), None);
+}
+
+#[test]
+fn peekable() {
+ assert_done(|| list().peekable().collect(), Ok(vec![1, 2, 3]));
+}
+
+#[test]
+fn fuse() {
+ let mut stream = block_on_stream(list().fuse());
+ assert_eq!(stream.next(), Some(Ok(1)));
+ assert_eq!(stream.next(), Some(Ok(2)));
+ assert_eq!(stream.next(), Some(Ok(3)));
+ assert_eq!(stream.next(), None);
+ assert_eq!(stream.next(), None);
+ assert_eq!(stream.next(), None);
+}
+
+#[test]
+fn buffered() {
+ let (tx, rx) = mpsc::channel(1);
+ let (a, b) = oneshot::channel::<u32>();
+ let (c, d) = oneshot::channel::<u32>();
+
+ tx.send(Box::new(b.recover(|_| panic!())) as Box<Future<Item = _, Error = _> + Send>)
+ .and_then(|tx| tx.send(Box::new(d.map_err(|_| panic!()))))
+ .forget();
+
+ let mut rx = rx.buffered(2);
+ sassert_empty(&mut rx);
+ c.send(3).unwrap();
+ sassert_empty(&mut rx);
+ a.send(5).unwrap();
+ let mut rx = block_on_stream(rx);
+ assert_eq!(rx.next(), Some(Ok(5)));
+ assert_eq!(rx.next(), Some(Ok(3)));
+ assert_eq!(rx.next(), None);
+
+ let (tx, rx) = mpsc::channel(1);
+ let (a, b) = oneshot::channel::<u32>();
+ let (c, d) = oneshot::channel::<u32>();
+
+ tx.send(Box::new(b.recover(|_| panic!())) as Box<Future<Item = _, Error = _> + Send>)
+ .and_then(|tx| tx.send(Box::new(d.map_err(|_| panic!()))))
+ .forget();
+
+ let mut rx = rx.buffered(1);
+ sassert_empty(&mut rx);
+ c.send(3).unwrap();
+ sassert_empty(&mut rx);
+ a.send(5).unwrap();
+ let mut rx = block_on_stream(rx);
+ assert_eq!(rx.next(), Some(Ok(5)));
+ assert_eq!(rx.next(), Some(Ok(3)));
+ assert_eq!(rx.next(), None);
+}
+
+#[test]
+fn unordered() {
+ let (tx, rx) = mpsc::channel(1);
+ let (a, b) = oneshot::channel::<u32>();
+ let (c, d) = oneshot::channel::<u32>();
+
+ tx.send(Box::new(b.recover(|_| panic!())) as Box<Future<Item = _, Error = _> + Send>)
+ .and_then(|tx| tx.send(Box::new(d.recover(|_| panic!()))))
+ .forget();
+
+ let mut rx = rx.buffer_unordered(2);
+ sassert_empty(&mut rx);
+ let mut rx = block_on_stream(rx);
+ c.send(3).unwrap();
+ assert_eq!(rx.next(), Some(Ok(3)));
+ a.send(5).unwrap();
+ assert_eq!(rx.next(), Some(Ok(5)));
+ assert_eq!(rx.next(), None);
+
+ let (tx, rx) = mpsc::channel(1);
+ let (a, b) = oneshot::channel::<u32>();
+ let (c, d) = oneshot::channel::<u32>();
+
+ tx.send(Box::new(b.recover(|_| panic!())) as Box<Future<Item = _, Error = _> + Send>)
+ .and_then(|tx| tx.send(Box::new(d.recover(|_| panic!()))))
+ .forget();
+
+ // We don't even get to see `c` until `a` completes.
+ let mut rx = rx.buffer_unordered(1);
+ sassert_empty(&mut rx);
+ c.send(3).unwrap();
+ sassert_empty(&mut rx);
+ a.send(5).unwrap();
+ let mut rx = block_on_stream(rx);
+ assert_eq!(rx.next(), Some(Ok(5)));
+ assert_eq!(rx.next(), Some(Ok(3)));
+ assert_eq!(rx.next(), None);
+}
+
+#[test]
+fn zip() {
+ assert_done(|| list().zip(list()).collect(), Ok(vec![(1, 1), (2, 2), (3, 3)]));
+ assert_done(|| list().zip(list().take(2)).collect(), Ok(vec![(1, 1), (2, 2)]));
+ assert_done(|| list().take(2).zip(list()).collect(), Ok(vec![(1, 1), (2, 2)]));
+ assert_done(|| err_list().zip(list()).collect::<Vec<_>>(), Err(3));
+ assert_done(|| list().zip(list().map(|x| x + 1)).collect(), Ok(vec![(1, 2), (2, 3), (3, 4)]));
+}
+
+#[test]
+fn peek() {
+ struct Peek {
+ inner: Peekable<Box<Stream<Item = i32, Error = u32> + Send>>,
+ }
+
+ impl Future for Peek {
+ type Item = ();
+ type Error = u32;
+
+ fn poll(&mut self, cx: &mut Context<'_>) -> Poll<(), u32> {
+ {
+ let res = ready!(self.inner.peek(cx))?;
+ assert_eq!(res, Some(&1));
+ }
+ assert_eq!(self.inner.peek(cx).unwrap(), Some(&1).into());
+ assert_eq!(self.inner.poll_next(cx).unwrap(), Some(1).into());
+ Ok(Poll::Ready(()))
+ }
+ }
+
+ block_on(Peek { inner: list().peekable() }).unwrap()
+}
+
+#[test]
+fn wait() {
+ assert_eq!(block_on_stream(list()).collect::<Result<Vec<_>, _>>(), Ok(vec![1, 2, 3]));
+}
+
+#[test]
+fn chunks() {
+ assert_done(|| list().chunks(3).collect(), Ok(vec![vec![1, 2, 3]]));
+ assert_done(|| list().chunks(1).collect(), Ok(vec![vec![1], vec![2], vec![3]]));
+ assert_done(|| list().chunks(2).collect(), Ok(vec![vec![1, 2], vec![3]]));
+ let mut list = block_on_stream(err_list().chunks(3));
+ let i = list.next().unwrap().unwrap();
+ assert_eq!(i, vec![1, 2]);
+ let i = list.next().unwrap().unwrap_err();
+ assert_eq!(i, 3);
+}
+
+#[test]
+#[should_panic]
+fn chunks_panic_on_cap_zero() {
+ let _ = list().chunks(0);
+}
+
+#[test]
+fn forward() {
+ let v = Vec::new();
+ let v = block_on(iter_ok::<_, Never>(vec![0, 1]).forward(v)).unwrap().1;
+ assert_eq!(v, vec![0, 1]);
+
+ let v = block_on(iter_ok::<_, Never>(vec![2, 3]).forward(v)).unwrap().1;
+ assert_eq!(v, vec![0, 1, 2, 3]);
+
+ assert_done(
+ move || iter_ok::<_, Never>(vec![4, 5]).forward(v).map(|(_, s)| s),
+ Ok(vec![0, 1, 2, 3, 4, 5]),
+ );
+}
+
+#[test]
+fn concat() {
+ let a = iter_ok::<_, ()>(vec![vec![1, 2, 3], vec![4, 5, 6], vec![7, 8, 9]]);
+ assert_done(move || a.concat(), Ok(vec![1, 2, 3, 4, 5, 6, 7, 8, 9]));
+
+ let b = iter(vec![Ok::<_, ()>(vec![1, 2, 3]), Err(()), Ok(vec![7, 8, 9])]);
+ assert_done(move || b.concat(), Err(()));
+}
+
+#[test]
+fn concat2() {
+ let a = iter_ok::<_, ()>(vec![vec![1, 2, 3], vec![4, 5, 6], vec![7, 8, 9]]);
+ assert_done(move || a.concat(), Ok(vec![1, 2, 3, 4, 5, 6, 7, 8, 9]));
+
+ let b = iter(vec![Ok::<_, ()>(vec![1, 2, 3]), Err(()), Ok(vec![7, 8, 9])]);
+ assert_done(move || b.concat(), Err(()));
+
+ let c = empty::<Vec<()>, ()>();
+ assert_done(move || c.concat(), Ok(vec![]))
+}
+
+#[test]
+fn stream_poll_fn() {
+ let mut counter = 5usize;
+
+ let read_stream = poll_fn(move |_| -> Poll<Option<usize>, std::io::Error> {
+ if counter == 0 {
+ return Ok(Poll::Ready(None));
+ }
+ counter -= 1;
+ Ok(Poll::Ready(Some(counter)))
+ });
+
+ assert_eq!(block_on_stream(read_stream).count(), 5);
+}
+
+#[test]
+fn inspect() {
+ let mut seen = vec![];
+ assert_done(|| list().inspect(|&a| seen.push(a)).collect(), Ok(vec![1, 2, 3]));
+ assert_eq!(seen, [1, 2, 3]);
+}
+
+#[test]
+fn inspect_err() {
+ let mut seen = vec![];
+ assert_done(|| err_list().inspect_err(|&a| seen.push(a)).collect::<Vec<_>>(), Err(3));
+ assert_eq!(seen, [3]);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 03:38:45 +0000