Adding upstream version 110.0.1.upstream/110.0.1upstream

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

1 files changed, 57 insertions, 0 deletions

diff --git a/third_party/rust/futures/tests/stream_split.rs b/third_party/rust/futures/tests/stream_split.rs
new file mode 100644
index 0000000000..694c151807
--- /dev/null
+++ b/third_party/rust/futures/tests/stream_split.rs
@@ -0,0 +1,57 @@
+use futures::executor::block_on;
+use futures::sink::{Sink, SinkExt};
+use futures::stream::{self, Stream, StreamExt};
+use futures::task::{Context, Poll};
+use pin_project::pin_project;
+use std::pin::Pin;
+
+#[test]
+fn test_split() {
+    #[pin_project]
+    struct Join<T, U> {
+        #[pin]
+        stream: T,
+        #[pin]
+        sink: U,
+    }
+
+    impl<T: Stream, U> Stream for Join<T, U> {
+        type Item = T::Item;
+
+        fn poll_next(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<T::Item>> {
+            self.project().stream.poll_next(cx)
+        }
+    }
+
+    impl<T, U: Sink<Item>, Item> Sink<Item> for Join<T, U> {
+        type Error = U::Error;
+
+        fn poll_ready(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+            self.project().sink.poll_ready(cx)
+        }
+
+        fn start_send(self: Pin<&mut Self>, item: Item) -> Result<(), Self::Error> {
+            self.project().sink.start_send(item)
+        }
+
+        fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+            self.project().sink.poll_flush(cx)
+        }
+
+        fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+            self.project().sink.poll_close(cx)
+        }
+    }
+
+    let mut dest: Vec<i32> = Vec::new();
+    {
+        let join = Join { stream: stream::iter(vec![10, 20, 30]), sink: &mut dest };
+
+        let (sink, stream) = join.split();
+        let join = sink.reunite(stream).expect("test_split: reunite error");
+        let (mut sink, stream) = join.split();
+        let mut stream = stream.map(Ok);
+        block_on(sink.send_all(&mut stream)).unwrap();
+    }
+    assert_eq!(dest, vec![10, 20, 30]);
+}