| // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // ignore-cloudabi no processes |
| // ignore-emscripten no processes |
| |
| use std::env::args; |
| use std::process::Command; |
| |
| fn assert_reverse_iterator_for_program_arguments(program_name: &str) { |
| let args: Vec<_> = args().rev().collect(); |
| |
| assert!(args.len() == 4); |
| assert_eq!(args[0], "c"); |
| assert_eq!(args[1], "b"); |
| assert_eq!(args[2], "a"); |
| assert_eq!(args[3], program_name); |
| |
| println!("passed"); |
| } |
| |
| fn main() { |
| let mut args = args(); |
| let me = args.next().unwrap(); |
| |
| if let Some(_) = args.next() { |
| assert_reverse_iterator_for_program_arguments(&me); |
| return |
| } |
| |
| let output = Command::new(&me) |
| .arg("a") |
| .arg("b") |
| .arg("c") |
| .output() |
| .unwrap(); |
| assert!(output.status.success()); |
| assert!(output.stderr.is_empty()); |
| assert_eq!(output.stdout, b"passed\n"); |
| } |