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time_panic.rs
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time_panic.rs
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#![warn(rust_2018_idioms)]
#![cfg(feature = "full")]
use futures::future;
use parking_lot::{const_mutex, Mutex};
use std::error::Error;
use std::panic;
use std::sync::Arc;
use std::time::Duration;
use tokio::runtime::{Builder, Runtime};
use tokio::time::{self, interval, interval_at, timeout, Instant};
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 pause_panic_caller() -> Result<(), Box<dyn Error>> {
let panic_location_file = test_panic(|| {
let rt = basic();
rt.block_on(async {
time::pause();
time::pause();
});
});
// The panic location should be in this file
assert_eq!(&panic_location_file.unwrap(), file!());
Ok(())
}
#[test]
fn resume_panic_caller() -> Result<(), Box<dyn Error>> {
let panic_location_file = test_panic(|| {
let rt = basic();
rt.block_on(async {
time::resume();
});
});
// The panic location should be in this file
assert_eq!(&panic_location_file.unwrap(), file!());
Ok(())
}
#[test]
fn interval_panic_caller() -> Result<(), Box<dyn Error>> {
let panic_location_file = test_panic(|| {
let _ = interval(Duration::from_millis(0));
});
// The panic location should be in this file
assert_eq!(&panic_location_file.unwrap(), file!());
Ok(())
}
#[test]
fn interval_at_panic_caller() -> Result<(), Box<dyn Error>> {
let panic_location_file = test_panic(|| {
let _ = interval_at(Instant::now(), Duration::from_millis(0));
});
// The panic location should be in this file
assert_eq!(&panic_location_file.unwrap(), file!());
Ok(())
}
#[test]
fn timeout_panic_caller() -> Result<(), Box<dyn Error>> {
// let rt = Builder::new_current_thread().build().unwrap();
// rt.block_on(async {
// let _ = timeout(Duration::from_millis(5), future::pending::<()>());
// });
let panic_location_file = test_panic(|| {
// Runtime without `enable_time` so it has no current timer set.
let rt = Builder::new_current_thread().build().unwrap();
rt.block_on(async {
let _ = timeout(Duration::from_millis(5), future::pending::<()>());
});
});
// 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()
}