assert_cmd/examples/example_fixture.rs at master · tailhook/assert_cmd · GitHub

32 lines (29 loc) · 696 Bytes

use std::env;

use std::error::Error;

use std::io;

use std::io::Write;

use std::process;

fn run() -> Result<(), Box<dyn Error>> {

if let Ok(text) = env::var("stdout") {

println!("{}", text);

}

if let Ok(text) = env::var("stderr") {

eprintln!("{}", text);

}

let code = env::var("exit")

.ok()

.map(|v| v.parse::<i32>())

.map_or(Ok(None), |r| r.map(Some))?

.unwrap_or(0);

process::exit(code);

}

fn main() {

let code = match run() {

Ok(_) => 0,

Err(ref e) => {

write!(&mut io::stderr(), "{}", e).expect("writing to stderr won't fail");

}

};

process::exit(code);

}

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