tester 0.6.0

A fork of Rust’s `test` crate that doesn’t require unstable language features.
Documentation 
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//! Helper module to detect subprocess exit code.

use std::process::ExitStatus;

#[cfg(not(unix))]
pub fn get_exit_code(status: ExitStatus) -> Result<i32, String> {
    status.code().ok_or("received no exit code from child process".into())
}

#[cfg(unix)]
pub fn get_exit_code(status: ExitStatus) -> Result<i32, String> {
    use std::os::unix::process::ExitStatusExt;
    match status.code() {
        Some(code) => Ok(code),
        None => match status.signal() {
            Some(signal) => Err(format!("child process exited with signal {}", signal)),
            None => Err("child process exited with unknown signal".into()),
        }
    }
}