run.rs

use std::process::{Command, Child};

pub fn run() -> Result<Child> {
    let child = try!(Command::new("echo").arg("world").spawn());

    Ok(child)
}

#[cfg(test)]
mod test {
    use super::*;

    #[test]
    fn test_simple_command() {
        let child = run().unwrap().wait_with_output().unwrap();
        let result = String::from_utf8(child.stdout).unwrap();

        assert_eq!(result, "world");
    }
}