rust/src/test/run-pass/capturing-logging.rs
2014-07-08 13:01:43 -07:00

52 lines
1.4 KiB
Rust

// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// ignore-android (FIXME #11419)
// exec-env:RUST_LOG=info
#![feature(phase)]
#[phase(plugin, link)]
extern crate log;
extern crate native;
use log::{set_logger, Logger, LogRecord};
use std::fmt;
use std::io::{ChanReader, ChanWriter};
struct MyWriter(ChanWriter);
impl Logger for MyWriter {
fn log(&mut self, record: &LogRecord) {
let MyWriter(ref mut inner) = *self;
write!(inner, "{}", record.args);
}
}
#[start]
fn start(argc: int, argv: *const *const u8) -> int {
native::start(argc, argv, proc() {
main();
})
}
fn main() {
let (tx, rx) = channel();
let (mut r, w) = (ChanReader::new(rx), ChanWriter::new(tx));
spawn(proc() {
set_logger(box MyWriter(w) as Box<Logger+Send>);
debug!("debug");
info!("info");
});
let s = r.read_to_string().unwrap();
assert!(s.as_slice().contains("info"));
assert!(!s.as_slice().contains("debug"));
}