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 // ignore-emscripten no processes
  12
  13 fn check_for_no_backtrace(test: std::process::Output) {
  14     assert!(!test.status.success());
  15     let err = String::from_utf8_lossy(&test.stderr);
  16     let mut it = err.lines();
  17
  18     assert_eq!(it.next().map(|l| l.starts_with("thread '<unnamed>' panicked at")), Some(true));
  19     assert_eq!(it.next(), Some("note: Run with `RUST_BACKTRACE=1` for a backtrace."));
  20     assert_eq!(it.next().map(|l| l.starts_with("thread 'main' panicked at")), Some(true));
  21     assert_eq!(it.next(), None);
  22 }
  23
  24 fn main() {
  25     let args: Vec<String> = std::env::args().collect();
  26     if args.len() > 1 && args[1] == "run_test" {
  27         let _ = std::thread::spawn(|| {
  28             panic!();
  29         }).join();
  30
  31         panic!();
  32     } else {
  33         let test = std::process::Command::new(&args[0]).arg("run_test")
  34                                                        .env_remove("RUST_BACKTRACE")
  35                                                        .output()
  36                                                        .unwrap();
  37         check_for_no_backtrace(test);
  38         let test = std::process::Command::new(&args[0]).arg("run_test")
  39                                                        .env("RUST_BACKTRACE","0")
  40                                                        .output()
  41                                                        .unwrap();
  42         check_for_no_backtrace(test);
  43     }
  44 }