assert_cmd 2.2.0

Test CLI Applications.
Documentation 
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#[allow(clippy::wildcard_imports)] // false positive
use assert_cmd::prelude::*;

use std::process::Command;

fn main() {
    Command::new("ls")
        .args(["non-existent"])
        .assert()
        .code(&[3, 42] as &[i32]);
}