forked from tokio-rs/tokio
/
rt_panic.rs
105 lines (83 loc) · 2.71 KB
/
rt_panic.rs
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#![warn(rust_2018_idioms)]
#![cfg(feature = "full")]
use lazy_static::lazy_static;
use std::error::Error;
use std::panic;
use std::sync::{Arc, Mutex, Once};
use tokio::runtime::{Builder, Handle, Runtime};
fn test_panic<Func: FnOnce() + panic::UnwindSafe>(func: Func) -> Option<String> {
lazy_static! {
static ref SET_UP_PANIC_HOOK: Once = Once::new();
static ref PANIC_MUTEX: Arc<Mutex<()>> = Arc::new(Mutex::new(()));
static ref PANIC_FILE: Mutex<String> = Mutex::new(String::new());
}
SET_UP_PANIC_HOOK.call_once(|| {
panic::set_hook(Box::new(|panic_info| {
let panic_location = panic_info.location().unwrap();
PANIC_FILE
.lock()
.unwrap()
.clone_from(&panic_location.file().to_string());
}));
});
{
let _guard = PANIC_MUTEX.lock();
let result = panic::catch_unwind(func);
if result.is_err() {
Some(PANIC_FILE.lock().ok()?.clone())
} else {
None
}
}
}
#[test]
fn test_current_handle_panic_caller() -> Result<(), Box<dyn Error>> {
let panic_location_file = test_panic(|| {
let _ = Handle::current();
});
// The panic location should be in this file
assert_eq!(&panic_location_file.unwrap(), file!());
Ok(())
}
#[test]
fn test_into_panic_panic_caller() -> Result<(), Box<dyn Error>> {
let panic_location_file = test_panic(move || {
let rt = basic();
rt.block_on(async {
let handle = tokio::spawn(async {
tokio::time::sleep(std::time::Duration::from_millis(100)).await;
});
handle.abort();
let err = handle.await.unwrap_err();
assert!(!&err.is_panic());
let _ = err.into_panic();
});
});
// The panic location should be in this file
assert_eq!(&panic_location_file.unwrap(), file!());
Ok(())
}
#[test]
fn test_builder_worker_threads_panic_caller() -> Result<(), Box<dyn Error>> {
let panic_location_file = test_panic(|| {
let _ = Builder::new_multi_thread().worker_threads(0).build();
});
// The panic location should be in this file
assert_eq!(&panic_location_file.unwrap(), file!());
Ok(())
}
#[test]
fn test_builder_max_blocking_threads_panic_caller() -> Result<(), Box<dyn Error>> {
let panic_location_file = test_panic(|| {
let _ = Builder::new_multi_thread().max_blocking_threads(0).build();
});
// The panic location should be in this file
assert_eq!(&panic_location_file.unwrap(), file!());
Ok(())
}
fn basic() -> Runtime {
tokio::runtime::Builder::new_current_thread()
.enable_all()
.build()
.unwrap()
}