src/test/run-pass/command-exec.rs

   1 // Copyright 2016 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 #![allow(stable_features)]
  12 // ignore-windows - this is a unix-specific test
  13 // ignore-pretty issue #37199
  14 // ignore-cloudabi no processes
  15 // ignore-emscripten no processes
  16
  17 #![feature(process_exec)]
  18
  19 use std::env;
  20 use std::os::unix::process::CommandExt;
  21 use std::process::Command;
  22
  23 fn main() {
  24     let mut args = env::args();
  25     let me = args.next().unwrap();
  26
  27     if let Some(arg) = args.next() {
  28         match &arg[..] {
  29             "test1" => println!("passed"),
  30
  31             "exec-test1" => {
  32                 let err = Command::new(&me).arg("test1").exec();
  33                 panic!("failed to spawn: {}", err);
  34             }
  35
  36             "exec-test2" => {
  37                 Command::new("/path/to/nowhere").exec();
  38                 println!("passed");
  39             }
  40
  41             "exec-test3" => {
  42                 Command::new(&me).arg("bad\0").exec();
  43                 println!("passed");
  44             }
  45
  46             "exec-test4" => {
  47                 Command::new(&me).current_dir("/path/to/nowhere").exec();
  48                 println!("passed");
  49             }
  50
  51             _ => panic!("unknown argument: {}", arg),
  52         }
  53         return
  54     }
  55
  56     let output = Command::new(&me).arg("exec-test1").output().unwrap();
  57     assert!(output.status.success());
  58     assert!(output.stderr.is_empty());
  59     assert_eq!(output.stdout, b"passed\n");
  60
  61     let output = Command::new(&me).arg("exec-test2").output().unwrap();
  62     assert!(output.status.success());
  63     assert!(output.stderr.is_empty());
  64     assert_eq!(output.stdout, b"passed\n");
  65
  66     let output = Command::new(&me).arg("exec-test3").output().unwrap();
  67     assert!(output.status.success());
  68     assert!(output.stderr.is_empty());
  69     assert_eq!(output.stdout, b"passed\n");
  70
  71     let output = Command::new(&me).arg("exec-test4").output().unwrap();
  72     assert!(output.status.success());
  73     assert!(output.stderr.is_empty());
  74     assert_eq!(output.stdout, b"passed\n");
  75 }