src/test/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 // compile-flags:-g
   8 // compile-flags:-Cstrip=none
   9
  10 #![feature(backtrace)]
  11
  12 use std::env;
  13 use std::process::Command;
  14 use std::str;
  15
  16 fn main() {
  17     let args: Vec<String> = env::args().collect();
  18     if args.len() >= 2 && args[1] == "force" {
  19         println!("stack backtrace:\n{}", std::backtrace::Backtrace::force_capture());
  20     } else if args.len() >= 2 {
  21         println!("stack backtrace:\n{}", std::backtrace::Backtrace::capture());
  22     } else {
  23         runtest(&args[0]);
  24         println!("test ok");
  25     }
  26 }
  27
  28 fn runtest(me: &str) {
  29     env::remove_var("RUST_BACKTRACE");
  30     env::remove_var("RUST_LIB_BACKTRACE");
  31
  32     let p = Command::new(me).arg("a").env("RUST_BACKTRACE", "1").output().unwrap();
  33     assert!(p.status.success());
  34     assert!(String::from_utf8_lossy(&p.stdout).contains("stack backtrace:\n"));
  35     assert!(String::from_utf8_lossy(&p.stdout).contains("backtrace::main"));
  36
  37     let p = Command::new(me).arg("a").env("RUST_BACKTRACE", "0").output().unwrap();
  38     assert!(p.status.success());
  39     assert!(String::from_utf8_lossy(&p.stdout).contains("disabled backtrace\n"));
  40
  41     let p = Command::new(me).arg("a").output().unwrap();
  42     assert!(p.status.success());
  43     assert!(String::from_utf8_lossy(&p.stdout).contains("disabled backtrace\n"));
  44
  45     let p = Command::new(me)
  46         .arg("a")
  47         .env("RUST_LIB_BACKTRACE", "1")
  48         .env("RUST_BACKTRACE", "1")
  49         .output()
  50         .unwrap();
  51     assert!(p.status.success());
  52     assert!(String::from_utf8_lossy(&p.stdout).contains("stack backtrace:\n"));
  53
  54     let p = Command::new(me)
  55         .arg("a")
  56         .env("RUST_LIB_BACKTRACE", "0")
  57         .env("RUST_BACKTRACE", "1")
  58         .output()
  59         .unwrap();
  60     assert!(p.status.success());
  61     assert!(String::from_utf8_lossy(&p.stdout).contains("disabled backtrace\n"));
  62
  63     let p = Command::new(me)
  64         .arg("force")
  65         .env("RUST_LIB_BACKTRACE", "0")
  66         .env("RUST_BACKTRACE", "0")
  67         .output()
  68         .unwrap();
  69     assert!(p.status.success());
  70     assert!(String::from_utf8_lossy(&p.stdout).contains("stack backtrace:\n"));
  71
  72     let p = Command::new(me).arg("force").output().unwrap();
  73     assert!(p.status.success());
  74     assert!(String::from_utf8_lossy(&p.stdout).contains("stack backtrace:\n"));
  75 }