blob: 229a8e58c093462c9d84b9867d1535905bf157fc [file] [log] [blame]
extern crate futures;
use std::any::Any;
use futures::sync::oneshot;
use futures::stream::futures_ordered;
use futures::prelude::*;
mod support;
#[test]
fn works_1() {
let (a_tx, a_rx) = oneshot::channel::<u32>();
let (b_tx, b_rx) = oneshot::channel::<u32>();
let (c_tx, c_rx) = oneshot::channel::<u32>();
let stream = futures_ordered(vec![a_rx, b_rx, c_rx]);
let mut spawn = futures::executor::spawn(stream);
b_tx.send(99).unwrap();
assert!(spawn.poll_stream_notify(&support::notify_noop(), 0).unwrap().is_not_ready());
a_tx.send(33).unwrap();
c_tx.send(33).unwrap();
assert_eq!(Some(Ok(33)), spawn.wait_stream());
assert_eq!(Some(Ok(99)), spawn.wait_stream());
assert_eq!(Some(Ok(33)), spawn.wait_stream());
assert_eq!(None, spawn.wait_stream());
}
#[test]
fn works_2() {
let (a_tx, a_rx) = oneshot::channel::<u32>();
let (b_tx, b_rx) = oneshot::channel::<u32>();
let (c_tx, c_rx) = oneshot::channel::<u32>();
let stream = futures_ordered(vec![
Box::new(a_rx) as Box<Future<Item = _, Error = _>>,
Box::new(b_rx.join(c_rx).map(|(a, b)| a + b)),
]);
let mut spawn = futures::executor::spawn(stream);
a_tx.send(33).unwrap();
b_tx.send(33).unwrap();
assert!(spawn.poll_stream_notify(&support::notify_noop(), 0).unwrap().is_ready());
assert!(spawn.poll_stream_notify(&support::notify_noop(), 0).unwrap().is_not_ready());
c_tx.send(33).unwrap();
assert!(spawn.poll_stream_notify(&support::notify_noop(), 0).unwrap().is_ready());
}
#[test]
fn from_iterator() {
use futures::future::ok;
use futures::stream::FuturesOrdered;
let stream = vec![
ok::<u32, ()>(1),
ok::<u32, ()>(2),
ok::<u32, ()>(3)
].into_iter().collect::<FuturesOrdered<_>>();
assert_eq!(stream.len(), 3);
assert_eq!(stream.collect().wait(), Ok(vec![1,2,3]));
}
#[test]
fn queue_never_unblocked() {
let (_a_tx, a_rx) = oneshot::channel::<Box<Any+Send>>();
let (b_tx, b_rx) = oneshot::channel::<Box<Any+Send>>();
let (c_tx, c_rx) = oneshot::channel::<Box<Any+Send>>();
let stream = futures_ordered(vec![
Box::new(a_rx) as Box<Future<Item = _, Error = _>>,
Box::new(b_rx.select(c_rx).then(|res| Ok(Box::new(res) as Box<Any+Send>))),
]);
let mut spawn = futures::executor::spawn(stream);
for _ in 0..10 {
assert!(spawn.poll_stream_notify(&support::notify_noop(), 0).unwrap().is_not_ready());
}
b_tx.send(Box::new(())).unwrap();
assert!(spawn.poll_stream_notify(&support::notify_noop(), 0).unwrap().is_not_ready());
c_tx.send(Box::new(())).unwrap();
assert!(spawn.poll_stream_notify(&support::notify_noop(), 0).unwrap().is_not_ready());
assert!(spawn.poll_stream_notify(&support::notify_noop(), 0).unwrap().is_not_ready());
}