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 #![allow(unknown_features)]
14 #![feature(box_syntax)]
19 use std::sync::mpsc::{channel, Sender, Receiver};
20 use std::thread::Thread;
22 pub struct ChannelLogger {
27 pub fn new() -> (Box<ChannelLogger>, Receiver<String>) {
28 let (tx, rx) = channel();
29 (box ChannelLogger { tx: tx }, rx)
33 impl log::Logger for ChannelLogger {
34 fn log(&mut self, record: &log::LogRecord) {
35 self.tx.send(format!("{}", record.args)).unwrap();
40 let (logger, rx) = ChannelLogger::new();
42 let _t = Thread::spawn(move|| {
43 log::set_logger(logger);
51 assert_eq!(rx.recv().unwrap().as_slice(), "foo");
52 assert_eq!(rx.recv().unwrap().as_slice(), "foo bar");
53 assert_eq!(rx.recv().unwrap().as_slice(), "bar foo");
54 assert!(rx.recv().is_err());