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 use std::env;
  11 use std::process::Command;
  12 use std::str;
  13
  14 fn main() {
  15     let args: Vec<String> = env::args().collect();
  16     if args.len() >= 2 && args[1] == "force" {
  17         println!("stack backtrace:\n{}", std::backtrace::Backtrace::force_capture());
  18     } else if args.len() >= 2 {
  19         println!("stack backtrace:\n{}", std::backtrace::Backtrace::capture());
  20     } else {
  21         runtest(&args[0]);
  22         println!("test ok");
  23     }
  24 }
  25
  26 fn runtest(me: &str) {
  27     env::remove_var("RUST_BACKTRACE");
  28     env::remove_var("RUST_LIB_BACKTRACE");
  29
  30     let p = Command::new(me).arg("a").env("RUST_BACKTRACE", "1").output().unwrap();
  31     assert!(p.status.success());
  32     assert!(String::from_utf8_lossy(&p.stdout).contains("stack backtrace:\n"));
  33     assert!(String::from_utf8_lossy(&p.stdout).contains("backtrace::main"));
  34
  35     let p = Command::new(me).arg("a").env("RUST_BACKTRACE", "0").output().unwrap();
  36     assert!(p.status.success());
  37     assert!(String::from_utf8_lossy(&p.stdout).contains("disabled backtrace\n"));
  38
  39     let p = Command::new(me).arg("a").output().unwrap();
  40     assert!(p.status.success());
  41     assert!(String::from_utf8_lossy(&p.stdout).contains("disabled backtrace\n"));
  42
  43     let p = Command::new(me)
  44         .arg("a")
  45         .env("RUST_LIB_BACKTRACE", "1")
  46         .env("RUST_BACKTRACE", "1")
  47         .output()
  48         .unwrap();
  49     assert!(p.status.success());
  50     assert!(String::from_utf8_lossy(&p.stdout).contains("stack backtrace:\n"));
  51
  52     let p = Command::new(me)
  53         .arg("a")
  54         .env("RUST_LIB_BACKTRACE", "0")
  55         .env("RUST_BACKTRACE", "1")
  56         .output()
  57         .unwrap();
  58     assert!(p.status.success());
  59     assert!(String::from_utf8_lossy(&p.stdout).contains("disabled backtrace\n"));
  60
  61     let p = Command::new(me)
  62         .arg("force")
  63         .env("RUST_LIB_BACKTRACE", "0")
  64         .env("RUST_BACKTRACE", "0")
  65         .output()
  66         .unwrap();
  67     assert!(p.status.success());
  68     assert!(String::from_utf8_lossy(&p.stdout).contains("stack backtrace:\n"));
  69
  70     let p = Command::new(me).arg("force").output().unwrap();
  71     assert!(p.status.success());
  72     assert!(String::from_utf8_lossy(&p.stdout).contains("stack backtrace:\n"));
  73 }