102 lines
2.3 KiB
Rust
102 lines
2.3 KiB
Rust
#![allow(clippy::blacklisted_name)]
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use tokio::sync::oneshot;
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use tokio_test::{assert_pending, assert_ready, task};
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#[tokio::test]
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async fn sync_one_lit_expr_comma() {
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let foo = tokio::try_join!(async { ok(1) },);
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assert_eq!(foo, Ok((1,)));
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}
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#[tokio::test]
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async fn sync_one_lit_expr_no_comma() {
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let foo = tokio::try_join!(async { ok(1) });
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assert_eq!(foo, Ok((1,)));
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}
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#[tokio::test]
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async fn sync_two_lit_expr_comma() {
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let foo = tokio::try_join!(async { ok(1) }, async { ok(2) },);
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assert_eq!(foo, Ok((1, 2)));
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}
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#[tokio::test]
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async fn sync_two_lit_expr_no_comma() {
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let foo = tokio::try_join!(async { ok(1) }, async { ok(2) });
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assert_eq!(foo, Ok((1, 2)));
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}
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#[tokio::test]
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async fn two_await() {
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let (tx1, rx1) = oneshot::channel::<&str>();
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let (tx2, rx2) = oneshot::channel::<u32>();
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let mut join =
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task::spawn(async { tokio::try_join!(async { rx1.await }, async { rx2.await }) });
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assert_pending!(join.poll());
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tx2.send(123).unwrap();
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assert!(join.is_woken());
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assert_pending!(join.poll());
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tx1.send("hello").unwrap();
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assert!(join.is_woken());
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let res: Result<(&str, u32), _> = assert_ready!(join.poll());
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assert_eq!(Ok(("hello", 123)), res);
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}
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#[tokio::test]
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async fn err_abort_early() {
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let (tx1, rx1) = oneshot::channel::<&str>();
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let (tx2, rx2) = oneshot::channel::<u32>();
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let (_tx3, rx3) = oneshot::channel::<u32>();
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let mut join = task::spawn(async {
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tokio::try_join!(async { rx1.await }, async { rx2.await }, async {
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rx3.await
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})
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});
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assert_pending!(join.poll());
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tx2.send(123).unwrap();
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assert!(join.is_woken());
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assert_pending!(join.poll());
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drop(tx1);
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assert!(join.is_woken());
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let res = assert_ready!(join.poll());
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assert!(res.is_err());
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}
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#[test]
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fn join_size() {
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use futures::future;
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use std::mem;
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let fut = async {
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let ready = future::ready(ok(0i32));
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tokio::try_join!(ready)
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};
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assert_eq!(mem::size_of_val(&fut), 16);
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let fut = async {
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let ready1 = future::ready(ok(0i32));
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let ready2 = future::ready(ok(0i32));
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tokio::try_join!(ready1, ready2)
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};
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assert_eq!(mem::size_of_val(&fut), 28);
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}
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fn ok<T>(val: T) -> Result<T, ()> {
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Ok(val)
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}
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