use std::fs;
use std::env;
use std::path::PathBuf;

pub fn env(key: &str) -> PathBuf {
    match env::var(key) {
        Ok(val) => PathBuf::from(val),
        _ => PathBuf::from(""),
    }
}

pub fn dir_does_not_exist(path: &PathBuf) {
    if path.exists() {
        remove_dir_all(path);
    }

    assert_eq!(path.exists(), false);
}

pub fn dir_exists(path: &PathBuf) {
    assert_eq!(path.exists(), true);
    remove_dir_all(path);
    assert_eq!(path.exists(), false);
}

fn remove_dir_all(path: &PathBuf) {
    match fs::remove_dir_all(path) {
        Ok(_val) => (),
        _ => panic!("Unable to remove {}", path.display()),
    }
}