assert_cmd 0.11.1

Test CLI Applications.
Documentation 
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extern crate assert_cmd;
extern crate escargot;
extern crate predicates;

use std::process::Command;

use assert_cmd::prelude::*;

#[test]
fn lib_example() {
    let mut cmd = Command::cargo_bin("bin_fixture").unwrap();
    cmd.assert().success();

    let mut cmd = Command::cargo_bin("bin_fixture").unwrap();
    cmd.arg("-A")
        .env("stdout", "hello")
        .env("exit", "42")
        .with_stdin()
        .buffer("42");
    let assert = cmd.assert();
    assert.failure().code(42).stdout("hello\n");
}