1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 // exec-env:RUST_LOG=rust-log-filter/foo
13 // pretty-expanded FIXME #23616
15 #![allow(unknown_features)]
16 #![feature(box_syntax, std_misc, rustc_private)]
21 use std::sync::mpsc::{channel, Sender, Receiver};
22 use std::thread::Thread;
24 pub struct ChannelLogger {
29 pub fn new() -> (Box<ChannelLogger>, Receiver<String>) {
30 let (tx, rx) = channel();
31 (box ChannelLogger { tx: tx }, rx)
35 impl log::Logger for ChannelLogger {
36 fn log(&mut self, record: &log::LogRecord) {
37 self.tx.send(format!("{}", record.args)).unwrap();
42 let (logger, rx) = ChannelLogger::new();
44 let _t = Thread::spawn(move|| {
45 log::set_logger(logger);
53 assert_eq!(rx.recv().unwrap(), "foo");
54 assert_eq!(rx.recv().unwrap(), "foo bar");
55 assert_eq!(rx.recv().unwrap(), "bar foo");
56 assert!(rx.recv().is_err());