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#![warn(rust_2018_idioms)]
#![cfg(all(feature = "time", not(target_os = "wasi")))] // Wasi does not support panic recovery
use parking_lot::{const_mutex, Mutex};
use std::error::Error;
use std::panic;
use std::sync::Arc;
use tokio::time::Duration;
use tokio_stream::{self as stream, StreamExt};
fn test_panic<Func: FnOnce() + panic::UnwindSafe>(func: Func) -> Option<String> {
static PANIC_MUTEX: Mutex<()> = const_mutex(());
{
let _guard = PANIC_MUTEX.lock();
let panic_file: Arc<Mutex<Option<String>>> = Arc::new(Mutex::new(None));
let prev_hook = panic::take_hook();
{
let panic_file = panic_file.clone();
panic::set_hook(Box::new(move |panic_info| {
let panic_location = panic_info.location().unwrap();
panic_file
.lock()
.clone_from(&Some(panic_location.file().to_string()));
}));
}
let result = panic::catch_unwind(func);
// Return to the previously set panic hook (maybe default) so that we get nice error
// messages in the tests.
panic::set_hook(prev_hook);
if result.is_err() {
panic_file.lock().clone()
} else {
None
}
}
}
#[test]
fn stream_chunks_timeout_panic_caller() -> Result<(), Box<dyn Error>> {
let panic_location_file = test_panic(|| {
let iter = vec![1, 2, 3].into_iter();
let stream0 = stream::iter(iter);
let _chunk_stream = stream0.chunks_timeout(0, Duration::from_secs(2));
});
// The panic location should be in this file
assert_eq!(&panic_location_file.unwrap(), file!());
Ok(())
}
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