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-cloudabi no processes
  12 // ignore-emscripten no processes
  13
  14 fn check_for_no_backtrace(test: std::process::Output) {
  15     assert!(!test.status.success());
  16     let err = String::from_utf8_lossy(&test.stderr);
  17     let mut it = err.lines();
  18
  19     assert_eq!(it.next().map(|l| l.starts_with("thread '<unnamed>' panicked at")), Some(true));
  20     assert_eq!(it.next(), Some("note: Run with `RUST_BACKTRACE=1` \
  21                                 environment variable to display a backtrace."));
  22     assert_eq!(it.next().map(|l| l.starts_with("thread 'main' panicked at")), Some(true));
  23     assert_eq!(it.next(), None);
  24 }
  25
  26 fn main() {
  27     let args: Vec<String> = std::env::args().collect();
  28     if args.len() > 1 && args[1] == "run_test" {
  29         let _ = std::thread::spawn(|| {
  30             panic!();
  31         }).join();
  32
  33         panic!();
  34     } else {
  35         let test = std::process::Command::new(&args[0]).arg("run_test")
  36                                                        .env_remove("RUST_BACKTRACE")
  37                                                        .output()
  38                                                        .unwrap();
  39         check_for_no_backtrace(test);
  40         let test = std::process::Command::new(&args[0]).arg("run_test")
  41                                                        .env("RUST_BACKTRACE","0")
  42                                                        .output()
  43                                                        .unwrap();
  44         check_for_no_backtrace(test);
  45     }
  46 }