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tests: Move seq/yes run function to Ucommand::run_stdout_starts_with

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Tests for both `seq` and `yes` run a command that never terminates,
and check the beggining of their output in stdout, move the copied
parts of the wrapper function to common/util.

We still need to use slightly different logic to parse exit value
as `seq` returns success if stdout gets closed, while `yes` fails.
This commit is contained in:
Nicolas Boichat 2025-03-22 14:18:38 +01:00 • committed by Sylvestre Ledru
parent b540e18dec
commit 59cd6e5e41
3 changed files with 40 additions and 33 deletions
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13
tests/by-util/test_yes.rs
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@ -3,7 +3,7 @@
// For the full copyright and license information, please view the LICENSE
// file that was distributed with this source code.
use std::ffi::OsStr;
use std::process::{ExitStatus, Stdio};
use std::process::ExitStatus;
#[cfg(unix)]
use std::os::unix::process::ExitStatusExt;
@ -22,15 +22,10 @@ fn check_termination(result: ExitStatus) {
const NO_ARGS: &[&str] = &[];
/// Run `yes`, capture some of the output, close the pipe, and verify it.
/// Run `yes`, capture some of the output, then check exit status.
fn run(args: &[impl AsRef<OsStr>], expected: &[u8]) {
let mut cmd = new_ucmd!();
let mut child = cmd.args(args).set_stdout(Stdio::piped()).run_no_wait();
let buf = child.stdout_exact_bytes(expected.len());
child.close_stdout();
check_termination(child.wait().unwrap().exit_status());
assert_eq!(buf.as_slice(), expected);
let result = new_ucmd!().args(args).run_stdout_starts_with(expected);
check_termination(result.exit_status());
}
#[test]