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#[test]
fn is_terminated() {
use futures::future::{self, FutureExt};
use futures::stream::{FusedStream, SelectAll, StreamExt};
use futures::task::Poll;
use futures_test::task::noop_context;
let mut cx = noop_context();
let mut tasks = SelectAll::new();
assert_eq!(tasks.is_terminated(), false);
assert_eq!(tasks.poll_next_unpin(&mut cx), Poll::Ready(None));
assert_eq!(tasks.is_terminated(), true);
// Test that the sentinel value doesn't leak
assert_eq!(tasks.is_empty(), true);
assert_eq!(tasks.len(), 0);
tasks.push(future::ready(1).into_stream());
assert_eq!(tasks.is_empty(), false);
assert_eq!(tasks.len(), 1);
assert_eq!(tasks.is_terminated(), false);
assert_eq!(tasks.poll_next_unpin(&mut cx), Poll::Ready(Some(1)));
assert_eq!(tasks.is_terminated(), false);
assert_eq!(tasks.poll_next_unpin(&mut cx), Poll::Ready(None));
assert_eq!(tasks.is_terminated(), true);
}
#[test]
fn issue_1626() {
use futures::executor::block_on_stream;
use futures::stream;
let a = stream::iter(0..=2);
let b = stream::iter(10..=14);
let mut s = block_on_stream(stream::select_all(vec![a, b]));
assert_eq!(s.next(), Some(0));
assert_eq!(s.next(), Some(10));
assert_eq!(s.next(), Some(1));
assert_eq!(s.next(), Some(11));
assert_eq!(s.next(), Some(2));
assert_eq!(s.next(), Some(12));
assert_eq!(s.next(), Some(13));
assert_eq!(s.next(), Some(14));
assert_eq!(s.next(), None);
}
#[test]
fn works_1() {
use futures::channel::mpsc;
use futures::executor::block_on_stream;
use futures::stream::select_all;
let (a_tx, a_rx) = mpsc::unbounded::<u32>();
let (b_tx, b_rx) = mpsc::unbounded::<u32>();
let (c_tx, c_rx) = mpsc::unbounded::<u32>();
let streams = vec![a_rx, b_rx, c_rx];
let mut stream = block_on_stream(select_all(streams));
b_tx.unbounded_send(99).unwrap();
a_tx.unbounded_send(33).unwrap();
assert_eq!(Some(33), stream.next());
assert_eq!(Some(99), stream.next());
b_tx.unbounded_send(99).unwrap();
a_tx.unbounded_send(33).unwrap();
assert_eq!(Some(33), stream.next());
assert_eq!(Some(99), stream.next());
c_tx.unbounded_send(42).unwrap();
assert_eq!(Some(42), stream.next());
a_tx.unbounded_send(43).unwrap();
assert_eq!(Some(43), stream.next());
drop((a_tx, b_tx, c_tx));
assert_eq!(None, stream.next());
}
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