45 lines
1.4 KiB
Rust
45 lines
1.4 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![feature(io, process_capture)]
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use std::env;
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use std::io::prelude::*;
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use std::io;
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use std::process::{Command, Stdio};
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fn main() {
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let args: Vec<String> = env::args().collect();
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if args.len() > 1 && args[1] == "child" {
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return child()
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}
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test();
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}
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fn child() {
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writeln!(&mut io::stdout(), "foo").unwrap();
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writeln!(&mut io::stderr(), "bar").unwrap();
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let mut stdin = io::stdin();
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let mut s = String::new();
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stdin.lock().read_line(&mut s).unwrap();
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assert_eq!(s.len(), 0);
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}
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fn test() {
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let args: Vec<String> = env::args().collect();
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let mut p = Command::new(&args[0]).arg("child")
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.stdin(Stdio::capture())
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.stdout(Stdio::capture())
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.stderr(Stdio::capture())
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.spawn().unwrap();
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assert!(p.wait().unwrap().success());
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}
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