//! Fake agent scripts for the tests.

use std::path::Path;

/// Write the script `body` to `path` as an executable, from a child process
/// rather than from this one: a write fd on it held here could be inherited
/// by a child another test thread forks, and exec'ing a file some process
/// still holds open for writing fails with `ETXTBSY`.
///
/// # Panics
///
/// If `/bin/sh` cannot run or the write fails.
pub fn write_executable(path: &Path, body: &str) {
    let status = std::process::Command::new("/bin/sh")
        .args([
            "-c",
            r#"printf '%s' "$1" > "$2" && chmod 755 "$2""#,
            "sh",
            body,
        ])
        .arg(path)
        .status()
        .expect("run /bin/sh");
    assert!(status.success(), "writing {} failed", path.display());
}