1 // run-pass 2 // ignore-emscripten spawning processes is not supported 3 // ignore-sgx no processes 4 5 use std::{env, process}; 6 child()7fn child() { 8 print!("[stdout 0]"); 9 print!("[stdout {}]", 1); 10 println!("[stdout {}]", 2); 11 println!(); 12 eprint!("[stderr 0]"); 13 eprint!("[stderr {}]", 1); 14 eprintln!("[stderr {}]", 2); 15 eprintln!(); 16 } 17 parent()18fn parent() { 19 let this = env::args().next().unwrap(); 20 let output = process::Command::new(this).arg("-").output().unwrap(); 21 assert!(output.status.success()); 22 23 let stdout = String::from_utf8(output.stdout).unwrap(); 24 let stderr = String::from_utf8(output.stderr).unwrap(); 25 26 assert_eq!(stdout, "[stdout 0][stdout 1][stdout 2]\n\n"); 27 assert_eq!(stderr, "[stderr 0][stderr 1][stderr 2]\n\n"); 28 } 29 main()30fn main() { 31 if env::args().count() == 2 { child() } else { parent() } 32 } 33