// Copyright 2015, 2016 Ethcore (UK) Ltd. // This file is part of Parity. // Parity is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // Parity is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with Parity. If not, see <http://www.gnu.org/licenses/>. //! Random path use std::path::*; use std::fs; use std::env; use rand::random; pub struct RandomTempPath { path: PathBuf } pub fn random_filename() -> String { (0..8).map(|_| ((random::<f32>() * 26.0) as u8 + 97) as char).collect() } impl RandomTempPath { pub fn new() -> RandomTempPath { let mut dir = env::temp_dir(); dir.push(random_filename()); RandomTempPath { path: dir.clone() } } pub fn create_dir() -> RandomTempPath { let mut dir = env::temp_dir(); dir.push(random_filename()); fs::create_dir_all(dir.as_path()).unwrap(); RandomTempPath { path: dir.clone() } } pub fn as_path(&self) -> &PathBuf { &self.path } pub fn as_str(&self) -> &str { self.path.to_str().unwrap() } } impl Drop for RandomTempPath { fn drop(&mut self) { if let Err(e) = fs::remove_dir_all(self.as_path()) { panic!("failed to remove temp directory, probably something failed to destroyed ({})", e); } } } #[test] fn creates_dir() { let temp = RandomTempPath::create_dir(); assert!(fs::metadata(temp.as_path()).unwrap().is_dir()); } #[test] fn destroys_dir() { let path_buf = { let temp = RandomTempPath::create_dir(); assert!(fs::metadata(temp.as_path()).unwrap().is_dir()); let path_buf = temp.as_path().to_path_buf(); path_buf }; assert!(fs::metadata(&path_buf).is_err()); } #[test] fn provides_random() { let temp = RandomTempPath::create_dir(); assert!(temp.as_path().to_str().is_some()); }