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1 | // Copyright 2015 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. | |
4 | // | |
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. | |
10 | ||
11 | use std::{env, fmt, process, sync, thread}; | |
12 | ||
13 | struct SlowFmt(u32); | |
14 | impl fmt::Debug for SlowFmt { | |
15 | fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> { | |
16 | thread::sleep_ms(3); | |
17 | self.0.fmt(f) | |
18 | } | |
19 | } | |
20 | ||
21 | fn do_print(x: u32) { | |
22 | let x = SlowFmt(x); | |
23 | println!("{:?}{:?}{:?}{:?}{:?}", x, x, x, x, x); | |
24 | } | |
25 | ||
26 | fn main(){ | |
27 | if env::args().count() == 2 { | |
28 | let barrier = sync::Arc::new(sync::Barrier::new(2)); | |
29 | let tbarrier = barrier.clone(); | |
30 | let t = thread::spawn(move || { | |
31 | tbarrier.wait(); | |
32 | do_print(1); | |
33 | }); | |
34 | barrier.wait(); | |
35 | do_print(2); | |
36 | t.join(); | |
37 | } else { | |
38 | let this = env::args().next().unwrap(); | |
39 | let output = process::Command::new(this).arg("-").output().unwrap(); | |
40 | for line in String::from_utf8(output.stdout).unwrap().lines() { | |
41 | match line.chars().next().unwrap() { | |
42 | '1' => assert_eq!(line, "11111"), | |
43 | '2' => assert_eq!(line, "22222"), | |
92a42be0 | 44 | chr => panic!("unexpected character {:?}", chr) |
9346a6ac AL |
45 | } |
46 | } | |
47 | } | |
48 | } |