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use {expect_events, sleep_ms, TryRead};
use mio::{Events, Poll, PollOpt, Ready, Token};
use mio::event::Event;
use mio::net::{TcpListener, TcpStream};
use std::io::Write;
use std::time::Duration;
const MS: u64 = 1_000;
#[test]
pub fn test_tcp_listener_level_triggered() {
let poll = Poll::new().unwrap();
let mut pevents = Events::with_capacity(1024);
// Create the listener
let l = TcpListener::bind(&"127.0.0.1:0".parse().unwrap()).unwrap();
// Register the listener with `Poll`
poll.register(&l, Token(0), Ready::readable(), PollOpt::level()).unwrap();
let s1 = TcpStream::connect(&l.local_addr().unwrap()).unwrap();
poll.register(&s1, Token(1), Ready::readable(), PollOpt::edge()).unwrap();
while filter(&pevents, Token(0)).is_empty() {
poll.poll(&mut pevents, Some(Duration::from_millis(MS))).unwrap();
}
let events = filter(&pevents, Token(0));
assert_eq!(events.len(), 1);
assert_eq!(events[0], Event::new(Ready::readable(), Token(0)));
poll.poll(&mut pevents, Some(Duration::from_millis(MS))).unwrap();
let events = filter(&pevents, Token(0));
assert_eq!(events.len(), 1);
assert_eq!(events[0], Event::new(Ready::readable(), Token(0)));
// Accept the connection then test that the events stop
let _ = l.accept().unwrap();
poll.poll(&mut pevents, Some(Duration::from_millis(MS))).unwrap();
let events = filter(&pevents, Token(0));
assert!(events.is_empty(), "actual={:?}", events);
let s3 = TcpStream::connect(&l.local_addr().unwrap()).unwrap();
poll.register(&s3, Token(2), Ready::readable(), PollOpt::edge()).unwrap();
while filter(&pevents, Token(0)).is_empty() {
poll.poll(&mut pevents, Some(Duration::from_millis(MS))).unwrap();
}
let events = filter(&pevents, Token(0));
assert_eq!(events.len(), 1);
assert_eq!(events[0], Event::new(Ready::readable(), Token(0)));
drop(l);
poll.poll(&mut pevents, Some(Duration::from_millis(MS))).unwrap();
let events = filter(&pevents, Token(0));
assert!(events.is_empty());
}
#[test]
pub fn test_tcp_stream_level_triggered() {
drop(::env_logger::init());
let poll = Poll::new().unwrap();
let mut pevents = Events::with_capacity(1024);
// Create the listener
let l = TcpListener::bind(&"127.0.0.1:0".parse().unwrap()).unwrap();
// Register the listener with `Poll`
poll.register(&l, Token(0), Ready::readable(), PollOpt::edge()).unwrap();
let mut s1 = TcpStream::connect(&l.local_addr().unwrap()).unwrap();
poll.register(&s1, Token(1), Ready::readable() | Ready::writable(), PollOpt::level()).unwrap();
// Sleep a bit to ensure it arrives at dest
sleep_ms(250);
expect_events(&poll, &mut pevents, 2, vec![
Event::new(Ready::readable(), Token(0)),
Event::new(Ready::writable(), Token(1)),
]);
// Server side of socket
let (mut s1_tx, _) = l.accept().unwrap();
// Sleep a bit to ensure it arrives at dest
sleep_ms(250);
expect_events(&poll, &mut pevents, 2, vec![
Event::new(Ready::writable(), Token(1))
]);
// Register the socket
poll.register(&s1_tx, Token(123), Ready::readable(), PollOpt::edge()).unwrap();
debug!("writing some data ----------");
// Write some data
let res = s1_tx.write(b"hello world!");
assert!(res.unwrap() > 0);
// Sleep a bit to ensure it arrives at dest
sleep_ms(250);
debug!("looking at rx end ----------");
// Poll rx end
expect_events(&poll, &mut pevents, 2, vec![
Event::new(Ready::readable(), Token(1))
]);
debug!("reading ----------");
// Reading the data should clear it
let mut res = vec![];
while s1.try_read_buf(&mut res).unwrap().is_some() {
}
assert_eq!(res, b"hello world!");
debug!("checking just read ----------");
expect_events(&poll, &mut pevents, 1, vec![
Event::new(Ready::writable(), Token(1))]);
// Closing the socket clears all active level events
drop(s1);
debug!("checking everything is gone ----------");
poll.poll(&mut pevents, Some(Duration::from_millis(MS))).unwrap();
let events = filter(&pevents, Token(1));
assert!(events.is_empty());
}
fn filter(events: &Events, token: Token) -> Vec<Event> {
(0..events.len()).map(|i| events.get(i).unwrap())
.filter(|e| e.token() == token)
.collect()
}
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