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use futures::channel::oneshot;
use futures::future::{FutureExt, TryFutureExt};
use futures_test::future::FutureTestExt;
use std::sync::mpsc;
use std::thread;
#[test]
fn oneshot_send1() {
let (tx1, rx1) = oneshot::channel::<i32>();
let (tx2, rx2) = mpsc::channel();
let t = thread::spawn(|| tx1.send(1).unwrap());
rx1.map_ok(move |x| tx2.send(x)).run_in_background();
assert_eq!(1, rx2.recv().unwrap());
t.join().unwrap();
}
#[test]
fn oneshot_send2() {
let (tx1, rx1) = oneshot::channel::<i32>();
let (tx2, rx2) = mpsc::channel();
thread::spawn(|| tx1.send(1).unwrap()).join().unwrap();
rx1.map_ok(move |x| tx2.send(x).unwrap()).run_in_background();
assert_eq!(1, rx2.recv().unwrap());
}
#[test]
fn oneshot_send3() {
let (tx1, rx1) = oneshot::channel::<i32>();
let (tx2, rx2) = mpsc::channel();
rx1.map_ok(move |x| tx2.send(x).unwrap()).run_in_background();
thread::spawn(|| tx1.send(1).unwrap()).join().unwrap();
assert_eq!(1, rx2.recv().unwrap());
}
#[test]
fn oneshot_drop_tx1() {
let (tx1, rx1) = oneshot::channel::<i32>();
let (tx2, rx2) = mpsc::channel();
drop(tx1);
rx1.map(move |result| tx2.send(result).unwrap()).run_in_background();
assert_eq!(Err(oneshot::Canceled), rx2.recv().unwrap());
}
#[test]
fn oneshot_drop_tx2() {
let (tx1, rx1) = oneshot::channel::<i32>();
let (tx2, rx2) = mpsc::channel();
let t = thread::spawn(|| drop(tx1));
rx1.map(move |result| tx2.send(result).unwrap()).run_in_background();
t.join().unwrap();
assert_eq!(Err(oneshot::Canceled), rx2.recv().unwrap());
}
#[test]
fn oneshot_drop_rx() {
let (tx, rx) = oneshot::channel::<i32>();
drop(rx);
assert_eq!(Err(2), tx.send(2));
}
#[test]
fn oneshot_debug() {
let (tx, rx) = oneshot::channel::<i32>();
assert_eq!(format!("{:?}", tx), "Sender { complete: false }");
assert_eq!(format!("{:?}", rx), "Receiver { complete: false }");
drop(rx);
assert_eq!(format!("{:?}", tx), "Sender { complete: true }");
let (tx, rx) = oneshot::channel::<i32>();
drop(tx);
assert_eq!(format!("{:?}", rx), "Receiver { complete: true }");
}
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