rust/src/test/run-pass/issue-14456.rs

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// 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.
use std::io::process;
use std::io::Command;
use std::io;
use std::os;
fn main() {
let args = os::args();
if args.len() > 1 && args.get(1).as_slice() == "child" {
return child()
}
test();
}
fn child() {
io::stdout().write_line("foo").unwrap();
io::stderr().write_line("bar").unwrap();
assert_eq!(io::stdin().read_line().err().unwrap().kind, io::EndOfFile);
}
fn test() {
let args = os::args();
let mut p = Command::new(args.get(0).as_slice()).arg("child")
.stdin(process::Ignored)
.stdout(process::Ignored)
.stderr(process::Ignored)
.spawn().unwrap();
assert!(p.wait().unwrap().success());
}