exit_safely 0.2.0

Enables exiting safely with custom exit codes while still calling `Drop` as needed. Aims for minimal magic and maximum flexibilty.
Documentation 
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use std::{path::PathBuf, process::Command};

use escargot::CargoBuild;

use std::sync::LazyLock;
static APP: LazyLock<PathBuf> = LazyLock::new(|| {
    CargoBuild::new()
        .bin("fixture_app")
        .manifest_path("./tests/fixtures/app/Cargo.toml")
        .current_release()
        .run()
        .unwrap()
        .path()
        .to_owned()
});

#[test]
fn exit_ok() {
    let mut cmd = Command::new(APP.as_os_str());
    cmd.args(["./Cargo.toml", "PASS"]);
    let output = cmd.output().unwrap();
    let stdout = String::from_utf8(output.stdout).unwrap();
    let stderr = String::from_utf8(output.stderr).unwrap();
    assert_eq!("Hello, world!\n", stdout);
    assert_eq!("", stderr);
    assert_eq!(0, output.status.code().unwrap());
}

#[test]
fn exit_msg_string() {
    let mut cmd = Command::new(APP.as_os_str());
    cmd.args(["FAIL"]);
    let output = cmd.output().unwrap();
    let stdout = String::from_utf8(output.stdout).unwrap();
    let stderr = String::from_utf8(output.stderr).unwrap();
    assert_eq!("Hello, world!\n", stdout);
    assert_eq!("Not enough args\n", stderr);
    assert_eq!(2, output.status.code().unwrap());
}

#[test]
fn exit_silent() {
    let mut cmd = Command::new(APP.as_os_str());
    cmd.args(["./Cargo.toml", "FAIL"]);
    let output = cmd.output().unwrap();
    let stdout = String::from_utf8(output.stdout).unwrap();
    let stderr = String::from_utf8(output.stderr).unwrap();
    assert_eq!("Hello, world!\n", stdout);
    assert_eq!("", stderr);
    assert_eq!(3, output.status.code().unwrap());
}

#[test]
fn file_not_found() {
    let mut cmd = Command::new(APP.as_os_str());
    cmd.args(["FAIL", "PASS"]);
    let output = cmd.output().unwrap();
    let stdout = String::from_utf8(output.stdout).unwrap();
    let stderr = String::from_utf8(output.stderr).unwrap();
    assert_eq!("Hello, world!\n", stdout);
    assert_eq!("No such file or directory (os error 2)\n", stderr);
    assert_eq!(1, output.status.code().unwrap());
}