src/test/ui/multi-panic.rs

   1 // run-pass
   2 // ignore-emscripten no processes
   3 // ignore-sgx no processes
   4
   5 fn check_for_no_backtrace(test: std::process::Output) {
   6     assert!(!test.status.success());
   7     let err = String::from_utf8_lossy(&test.stderr);
   8     let mut it = err.lines();
   9
  10     assert_eq!(it.next().map(|l| l.starts_with("thread '<unnamed>' panicked at")), Some(true));
  11     assert_eq!(it.next(), Some("note: run with `RUST_BACKTRACE=1` \
  12                                 environment variable to display a backtrace"));
  13     assert_eq!(it.next().map(|l| l.starts_with("thread 'main' panicked at")), Some(true));
  14     assert_eq!(it.next(), None);
  15 }
  16
  17 fn main() {
  18     let args: Vec<String> = std::env::args().collect();
  19     if args.len() > 1 && args[1] == "run_test" {
  20         let _ = std::thread::spawn(|| {
  21             panic!();
  22         }).join();
  23
  24         panic!();
  25     } else {
  26         let test = std::process::Command::new(&args[0]).arg("run_test")
  27                                                        .env_remove("RUST_BACKTRACE")
  28                                                        .output()
  29                                                        .unwrap();
  30         check_for_no_backtrace(test);
  31         let test = std::process::Command::new(&args[0]).arg("run_test")
  32                                                        .env("RUST_BACKTRACE","0")
  33                                                        .output()
  34                                                        .unwrap();
  35         check_for_no_backtrace(test);
  36     }
  37 }