src/test/ui/multi-panic.rs

   1 // run-pass
   2 // ignore-cloudabi no processes
   3 // ignore-emscripten no processes
   4 // ignore-sgx no processes
   5
   6 fn check_for_no_backtrace(test: std::process::Output) {
   7     assert!(!test.status.success());
   8     let err = String::from_utf8_lossy(&test.stderr);
   9     let mut it = err.lines();
  10
  11     assert_eq!(it.next().map(|l| l.starts_with("thread '<unnamed>' panicked at")), Some(true));
  12     assert_eq!(it.next(), Some("note: run with `RUST_BACKTRACE=1` \
  13                                 environment variable to display a backtrace"));
  14     assert_eq!(it.next().map(|l| l.starts_with("thread 'main' panicked at")), Some(true));
  15     assert_eq!(it.next(), None);
  16 }
  17
  18 fn main() {
  19     let args: Vec<String> = std::env::args().collect();
  20     if args.len() > 1 && args[1] == "run_test" {
  21         let _ = std::thread::spawn(|| {
  22             panic!();
  23         }).join();
  24
  25         panic!();
  26     } else {
  27         let test = std::process::Command::new(&args[0]).arg("run_test")
  28                                                        .env_remove("RUST_BACKTRACE")
  29                                                        .output()
  30                                                        .unwrap();
  31         check_for_no_backtrace(test);
  32         let test = std::process::Command::new(&args[0]).arg("run_test")
  33                                                        .env("RUST_BACKTRACE","0")
  34                                                        .output()
  35                                                        .unwrap();
  36         check_for_no_backtrace(test);
  37     }
  38 }