src/test/run-pass/env-vars.rs

   1 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 // ignore-wasm32-bare no env vars
  12
  13 use std::env::*;
  14
  15 fn main() {
  16     for (k, v) in vars_os() {
  17         let v2 = var_os(&k);
  18         assert!(v2.as_ref().map(|s| &**s) == Some(&*v),
  19                 "bad vars->var transition: {:?} {:?} {:?}", k, v, v2);
  20     }
  21 }