in src/fs.rs [1006:1038]
fn small_write<'a>() {
init();
let dir = tempfile::Builder::new()
.prefix("mount_and_write")
.tempdir()
.unwrap();
let mnt = dir.into_path();
let mnt_str = String::from(mnt.to_str().unwrap());
let daemon = mount_tempdir_rw(mnt);
info!("mounted fs at {} in thread {:#?}", mnt_str, daemon);
let mut tmp_file = NamedTempFile::new_in(mnt_str).unwrap();
info!("Opened '{:#?}'", tmp_file.path());
let txt_file = tmp_file.as_file_mut();
let write_result = txt_file.write_all(b"My first words!");
info!(" got back {:#?}", write_result);
assert!(write_result.is_ok());
// sync the file to see if we have any other errors.
let sync_result = txt_file.sync_all();
info!(" sync result => {:#?}", sync_result);
assert!(sync_result.is_ok());
// drop the file to close it.
drop(txt_file);
info!("Sleeping for 1s, to wait for the FS to be flush.");
std::thread::sleep(Duration::from_millis(1000));
// Drop the daemon to clean up.
drop(daemon);
}