117 lines
3.9 KiB
Rust
117 lines
3.9 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// ignore-android FIXME #17520
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// ignore-emscripten spawning processes is not supported
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// ignore-openbsd no support for libbacktrace without filename
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// compile-flags:-g
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use std::env;
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use std::process::{Command, Stdio};
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use std::str;
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#[inline(never)]
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fn foo() {
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let _v = vec![1, 2, 3];
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if env::var_os("IS_TEST").is_some() {
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panic!()
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}
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}
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#[inline(never)]
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fn double() {
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struct Double;
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impl Drop for Double {
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fn drop(&mut self) { panic!("twice") }
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}
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let _d = Double;
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panic!("once");
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}
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fn template(me: &str) -> Command {
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let mut m = Command::new(me);
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m.env("IS_TEST", "1")
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.stdout(Stdio::piped())
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.stderr(Stdio::piped());
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return m;
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}
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fn expected(fn_name: &str) -> String {
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format!(" backtrace::{}", fn_name)
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}
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fn runtest(me: &str) {
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// Make sure that the stack trace is printed
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let p = template(me).arg("fail").env("RUST_BACKTRACE", "1").spawn().unwrap();
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let out = p.wait_with_output().unwrap();
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assert!(!out.status.success());
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let s = str::from_utf8(&out.stderr).unwrap();
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assert!(s.contains("stack backtrace") && s.contains(&expected("foo")),
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"bad output: {}", s);
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assert!(s.contains(" 0:"), "the frame number should start at 0");
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// Make sure the stack trace is *not* printed
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// (Remove RUST_BACKTRACE from our own environment, in case developer
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// is running `make check` with it on.)
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let p = template(me).arg("fail").env_remove("RUST_BACKTRACE").spawn().unwrap();
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let out = p.wait_with_output().unwrap();
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assert!(!out.status.success());
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let s = str::from_utf8(&out.stderr).unwrap();
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assert!(!s.contains("stack backtrace") && !s.contains(&expected("foo")),
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"bad output2: {}", s);
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// Make sure the stack trace is *not* printed
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// (RUST_BACKTRACE=0 acts as if it were unset from our own environment,
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// in case developer is running `make check` with it set.)
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let p = template(me).arg("fail").env("RUST_BACKTRACE","0").spawn().unwrap();
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let out = p.wait_with_output().unwrap();
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assert!(!out.status.success());
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let s = str::from_utf8(&out.stderr).unwrap();
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assert!(!s.contains("stack backtrace") && !s.contains(" - foo"),
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"bad output3: {}", s);
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// Make sure a stack trace is printed
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let p = template(me).arg("double-fail").spawn().unwrap();
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let out = p.wait_with_output().unwrap();
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assert!(!out.status.success());
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let s = str::from_utf8(&out.stderr).unwrap();
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// loosened the following from double::h to double:: due to
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// spurious failures on mac, 32bit, optimized
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assert!(s.contains("stack backtrace") && s.contains(&expected("double")),
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"bad output3: {}", s);
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// Make sure a stack trace isn't printed too many times
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let p = template(me).arg("double-fail")
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.env("RUST_BACKTRACE", "1").spawn().unwrap();
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let out = p.wait_with_output().unwrap();
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assert!(!out.status.success());
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let s = str::from_utf8(&out.stderr).unwrap();
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let mut i = 0;
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for _ in 0..2 {
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i += s[i + 10..].find("stack backtrace").unwrap() + 10;
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}
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assert!(s[i + 10..].find("stack backtrace").is_none(),
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"bad output4: {}", s);
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}
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fn main() {
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let args: Vec<String> = env::args().collect();
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if args.len() >= 2 && args[1] == "fail" {
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foo();
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} else if args.len() >= 2 && args[1] == "double-fail" {
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double();
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} else {
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runtest(&args[0]);
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}
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}
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