47 lines
1.3 KiB
Rust
47 lines
1.3 KiB
Rust
use futures::channel::mpsc;
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use futures::executor::block_on;
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use futures::stream::{abortable, Stream, StreamExt};
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use futures::task::{Context, Poll};
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use futures::SinkExt;
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use futures_test::task::new_count_waker;
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use std::pin::Pin;
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#[test]
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fn abortable_works() {
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let (_tx, a_rx) = mpsc::channel::<()>(1);
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let (mut abortable_rx, abort_handle) = abortable(a_rx);
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abort_handle.abort();
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assert!(abortable_rx.is_aborted());
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assert_eq!(None, block_on(abortable_rx.next()));
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}
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#[test]
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fn abortable_awakens() {
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let (_tx, a_rx) = mpsc::channel::<()>(1);
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let (mut abortable_rx, abort_handle) = abortable(a_rx);
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let (waker, counter) = new_count_waker();
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let mut cx = Context::from_waker(&waker);
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assert_eq!(counter, 0);
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assert_eq!(Poll::Pending, Pin::new(&mut abortable_rx).poll_next(&mut cx));
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assert_eq!(counter, 0);
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abort_handle.abort();
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assert_eq!(counter, 1);
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assert!(abortable_rx.is_aborted());
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assert_eq!(Poll::Ready(None), Pin::new(&mut abortable_rx).poll_next(&mut cx));
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}
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#[test]
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fn abortable_resolves() {
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let (mut tx, a_rx) = mpsc::channel::<()>(1);
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let (mut abortable_rx, _abort_handle) = abortable(a_rx);
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block_on(tx.send(())).unwrap();
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assert!(!abortable_rx.is_aborted());
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assert_eq!(Some(()), block_on(abortable_rx.next()));
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}
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