kraal 0.2.0

A terminal workspace manager for SSH fleets and coding agents
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//! Helpers shared by unit tests.

use std::io::Write;
use std::path::Path;
use std::process::{Command, Stdio};

/// Write an executable script at `path`. A child process writes it: a file this process held
/// open for writing could be inherited by a program another test starts at that moment, and
/// running the script would then fail with "text file busy".
pub fn write_script(path: &Path, body: &str) {
    let mut child = Command::new("sh")
        .arg("-c")
        .arg("cat > \"$1\" && chmod 755 \"$1\"")
        .arg("sh")
        .arg(path)
        .stdin(Stdio::piped())
        .spawn()
        .unwrap();
    child.stdin.take().unwrap().write_all(body.as_bytes()).unwrap();
    assert!(child.wait().unwrap().success(), "writing {}", path.display());
}