1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
//@ run-pass
//@ needs-subprocess
use std::env;
use std::io::prelude::*;
use std::io;
use std::process::{Command, Stdio};
fn main() {
let args: Vec<String> = env::args().collect();
if args.len() > 1 && args[1] == "child" {
return child()
}
test();
}
fn child() {
writeln!(&mut io::stdout(), "foo").unwrap();
writeln!(&mut io::stderr(), "bar").unwrap();
let stdin = io::stdin();
let mut s = String::new();
stdin.lock().read_line(&mut s).unwrap();
assert_eq!(s.len(), 0);
}
fn test() {
let args: Vec<String> = env::args().collect();
let mut p = Command::new(&args[0]).arg("child")
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.stderr(Stdio::piped())
.spawn().unwrap();
assert!(p.wait().unwrap().success());
}
|
