66 lines
2.0 KiB
Rust
66 lines
2.0 KiB
Rust
|
#![deny(rust_2018_idioms)]
|
||
|
|
|
||
|
|
use std::fs;
|
||
|
|
use std::io::{Read, Seek, SeekFrom, Write};
|
||
|
|
use std::sync::mpsc::{sync_channel, TryRecvError};
|
||
|
|
use std::thread;
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn test_basic() {
|
||
|
|
let mut tmpfile = tempfile::tempfile().unwrap();
|
||
|
|
write!(tmpfile, "abcde").unwrap();
|
||
|
|
tmpfile.seek(SeekFrom::Start(0)).unwrap();
|
||
|
|
let mut buf = String::new();
|
||
|
|
tmpfile.read_to_string(&mut buf).unwrap();
|
||
|
|
assert_eq!("abcde", buf);
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn test_cleanup() {
|
||
|
|
let tmpdir = tempfile::tempdir().unwrap();
|
||
|
|
{
|
||
|
|
let mut tmpfile = tempfile::tempfile_in(&tmpdir).unwrap();
|
||
|
|
write!(tmpfile, "abcde").unwrap();
|
||
|
|
}
|
||
|
|
let num_files = fs::read_dir(&tmpdir).unwrap().count();
|
||
|
|
assert!(num_files == 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Only run this test on Linux. MacOS doesn't like us creating so many files, apparently.
|
||
|
|
#[cfg(target_os = "linux")]
|
||
|
|
#[test]
|
||
|
|
fn test_pathological_cleaner() {
|
||
|
|
let tmpdir = tempfile::tempdir().unwrap();
|
||
|
|
let (tx, rx) = sync_channel(0);
|
||
|
|
let cleaner_thread = thread::spawn(move || {
|
||
|
|
let tmp_path = rx.recv().unwrap();
|
||
|
|
while rx.try_recv() == Err(TryRecvError::Empty) {
|
||
|
|
let files = fs::read_dir(&tmp_path).unwrap();
|
||
|
|
for f in files {
|
||
|
|
// skip errors
|
||
|
|
if f.is_err() {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
let f = f.unwrap();
|
||
|
|
let _ = fs::remove_file(f.path());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
// block until cleaner_thread makes progress
|
||
|
|
tx.send(tmpdir.path().to_owned()).unwrap();
|
||
|
|
// need 40-400 iterations to encounter race with cleaner on original system
|
||
|
|
for _ in 0..10000 {
|
||
|
|
let mut tmpfile = tempfile::tempfile_in(&tmpdir).unwrap();
|
||
|
|
write!(tmpfile, "abcde").unwrap();
|
||
|
|
tmpfile.seek(SeekFrom::Start(0)).unwrap();
|
||
|
|
let mut buf = String::new();
|
||
|
|
tmpfile.read_to_string(&mut buf).unwrap();
|
||
|
|
assert_eq!("abcde", buf);
|
||
|
|
}
|
||
|
|
|
||
|
|
// close the channel to make cleaner_thread exit
|
||
|
|
drop(tx);
|
||
|
|
cleaner_thread.join().expect("The cleaner thread failed");
|
||
|
|
}
|