nio 0.1.4

Async runtime for Rust
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27

#![warn(rust_2018_idioms)]
#![cfg(not(target_os = "wasi"))] // Wasi doesn't support panic recovery
#![cfg(panic = "unwind")]

use nio::{sleep, spawn, test};
use std::time::Duration;

struct PanicsOnDrop;

impl Drop for PanicsOnDrop {
    fn drop(&mut self) {
        panic!("I told you so");
    }
}

#[test]
#[should_panic]
async fn test_panics_do_not_propagate_when_dropping_join_handle() {
    let join_handle = spawn(async move { PanicsOnDrop });

    // only drop the JoinHandle when the task has completed
    // (which is difficult to synchronize precisely)
    sleep(Duration::from_millis(500)).await;
    assert!(join_handle.is_finished());

    drop(join_handle);
}