rust/tests/ui/print-stdout-eprint-stderr.rs

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//@ run-pass
//@ ignore-wasm32 spawning processes is not supported
2019-04-24 16:26:33 +00:00
//@ ignore-sgx no processes
use std::{env, process};
fn child() {
print!("[stdout 0]");
print!("[stdout {}]", 1);
println!("[stdout {}]", 2);
println!();
eprint!("[stderr 0]");
eprint!("[stderr {}]", 1);
eprintln!("[stderr {}]", 2);
eprintln!();
}
fn parent() {
let this = env::args().next().unwrap();
let output = process::Command::new(this).arg("-").output().unwrap();
assert!(output.status.success());
let stdout = String::from_utf8(output.stdout).unwrap();
let stderr = String::from_utf8(output.stderr).unwrap();
assert_eq!(stdout, "[stdout 0][stdout 1][stdout 2]\n\n");
assert_eq!(stderr, "[stderr 0][stderr 1][stderr 2]\n\n");
}
fn main() {
if env::args().count() == 2 { child() } else { parent() }
}