tests/ui/std-backtrace.rs

   1 // run-pass
   2 // ignore-android FIXME #17520
   3 // ignore-emscripten spawning processes is not supported
   4 // ignore-openbsd no support for libbacktrace without filename
   5 // ignore-sgx no processes
   6 // ignore-msvc see #62897 and `backtrace-debuginfo.rs` test
   7 // ignore-fuchsia Backtraces not symbolized
   8 // compile-flags:-g
   9 // compile-flags:-Cstrip=none
  10
  11 use std::env;
  12 use std::process::Command;
  13 use std::str;
  14
  15 fn main() {
  16     let args: Vec<String> = env::args().collect();
  17     if args.len() >= 2 && args[1] == "force" {
  18         println!("stack backtrace:\n{}", std::backtrace::Backtrace::force_capture());
  19     } else if args.len() >= 2 {
  20         println!("stack backtrace:\n{}", std::backtrace::Backtrace::capture());
  21     } else {
  22         runtest(&args[0]);
  23         println!("test ok");
  24     }
  25 }
  26
  27 fn runtest(me: &str) {
  28     env::remove_var("RUST_BACKTRACE");
  29     env::remove_var("RUST_LIB_BACKTRACE");
  30
  31     let p = Command::new(me).arg("a").env("RUST_BACKTRACE", "1").output().unwrap();
  32     assert!(p.status.success());
  33     assert!(String::from_utf8_lossy(&p.stdout).contains("stack backtrace:\n"));
  34     assert!(String::from_utf8_lossy(&p.stdout).contains("backtrace::main"));
  35
  36     let p = Command::new(me).arg("a").env("RUST_BACKTRACE", "0").output().unwrap();
  37     assert!(p.status.success());
  38     assert!(String::from_utf8_lossy(&p.stdout).contains("disabled backtrace\n"));
  39
  40     let p = Command::new(me).arg("a").output().unwrap();
  41     assert!(p.status.success());
  42     assert!(String::from_utf8_lossy(&p.stdout).contains("disabled backtrace\n"));
  43
  44     let p = Command::new(me)
  45         .arg("a")
  46         .env("RUST_LIB_BACKTRACE", "1")
  47         .env("RUST_BACKTRACE", "1")
  48         .output()
  49         .unwrap();
  50     assert!(p.status.success());
  51     assert!(String::from_utf8_lossy(&p.stdout).contains("stack backtrace:\n"));
  52
  53     let p = Command::new(me)
  54         .arg("a")
  55         .env("RUST_LIB_BACKTRACE", "0")
  56         .env("RUST_BACKTRACE", "1")
  57         .output()
  58         .unwrap();
  59     assert!(p.status.success());
  60     assert!(String::from_utf8_lossy(&p.stdout).contains("disabled backtrace\n"));
  61
  62     let p = Command::new(me)
  63         .arg("force")
  64         .env("RUST_LIB_BACKTRACE", "0")
  65         .env("RUST_BACKTRACE", "0")
  66         .output()
  67         .unwrap();
  68     assert!(p.status.success());
  69     assert!(String::from_utf8_lossy(&p.stdout).contains("stack backtrace:\n"));
  70
  71     let p = Command::new(me).arg("force").output().unwrap();
  72     assert!(p.status.success());
  73     assert!(String::from_utf8_lossy(&p.stdout).contains("stack backtrace:\n"));
  74 }