tokio/tests/drop-core.rs
Alex Crichton e86fc4917a Change need_read and need_write to return an error
This commit is targeted at solving tokio-rs/tokio-core#12 and incorporates the
solution from tokio-rs/tokio-core#17. Namely the `need_read` and `need_write`
functions on `PollEvented` now return an error when the connected reactor has
gone away and the task cannot be blocked. This will typically naturally
translate to errors being returned by various connected I/O objects and should
help tear down the world in a clean-ish fashion.
2017-12-05 08:43:01 -08:00

40 lines
1.0 KiB
Rust

extern crate tokio;
extern crate futures;
use std::thread;
use futures::future;
use futures::prelude::*;
use futures::sync::oneshot;
use tokio::net::TcpListener;
use tokio::reactor::Core;
#[test]
fn tcp_doesnt_block() {
let core = Core::new().unwrap();
let handle = core.handle();
let listener = TcpListener::bind(&"127.0.0.1:0".parse().unwrap(), &handle).unwrap();
drop(core);
assert!(listener.incoming().wait().next().unwrap().is_err());
}
#[test]
fn drop_wakes() {
let core = Core::new().unwrap();
let handle = core.handle();
let listener = TcpListener::bind(&"127.0.0.1:0".parse().unwrap(), &handle).unwrap();
let (tx, rx) = oneshot::channel::<()>();
let t = thread::spawn(move || {
let incoming = listener.incoming();
let new_socket = incoming.into_future().map_err(|_| ());
let drop_tx = future::lazy(|| {
drop(tx);
future::ok(())
});
assert!(new_socket.join(drop_tx).wait().is_err());
});
drop(rx.wait());
drop(core);
t.join().unwrap();
}