src/test/run-pass/multi-panic.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 fn check_for_no_backtrace(test: std::process::Output) {
  12     assert!(!test.status.success());
  13     let err = String::from_utf8_lossy(&test.stderr);
  14     let mut it = err.lines();
  15
  16     assert_eq!(it.next().map(|l| l.starts_with("thread '<unnamed>' panicked at")), Some(true));
  17     assert_eq!(it.next(), Some("note: Run with `RUST_BACKTRACE=1` for a backtrace."));
  18     assert_eq!(it.next().map(|l| l.starts_with("thread '<main>' panicked at")), Some(true));
  19     assert_eq!(it.next(), None);
  20 }
  21
  22 fn main() {
  23     let args: Vec<String> = std::env::args().collect();
  24     if args.len() > 1 && args[1] == "run_test" {
  25         let _ = std::thread::spawn(|| {
  26             panic!();
  27         }).join();
  28
  29         panic!();
  30     } else {
  31         let test = std::process::Command::new(&args[0]).arg("run_test")
  32                                                        .env_remove("RUST_BACKTRACE")
  33                                                        .output()
  34                                                        .unwrap();
  35         check_for_no_backtrace(test);
  36         let test = std::process::Command::new(&args[0]).arg("run_test")
  37                                                        .env("RUST_BACKTRACE","0")
  38                                                        .output()
  39                                                        .unwrap();
  40         check_for_no_backtrace(test);
  41     }
  42 }