| // run-pass |
| #![allow(unused_mut)] |
| // ignore-cloudabi no processes |
| // ignore-emscripten no processes |
| // ignore-sgx no processes |
| |
| use std::env; |
| use std::io::prelude::*; |
| use std::io; |
| use std::process::{Command, Stdio}; |
| use std::str; |
| |
| fn main() { |
| let args: Vec<String> = env::args().collect(); |
| if args.len() > 1 && args[1] == "child" { |
| child(); |
| } else { |
| parent(); |
| } |
| } |
| |
| fn parent() { |
| let args: Vec<String> = env::args().collect(); |
| let mut p = Command::new(&args[0]).arg("child") |
| .stdout(Stdio::piped()) |
| .stdin(Stdio::piped()) |
| .spawn().unwrap(); |
| p.stdin.as_mut().unwrap().write_all(b"test1\ntest2\ntest3").unwrap(); |
| let out = p.wait_with_output().unwrap(); |
| assert!(out.status.success()); |
| let s = str::from_utf8(&out.stdout).unwrap(); |
| assert_eq!(s, "test1\ntest2\ntest3\n"); |
| } |
| |
| fn child() { |
| let mut stdin = io::stdin(); |
| for line in stdin.lock().lines() { |
| println!("{}", line.unwrap()); |
| } |
| } |
