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// Bare metal platforms usually have very small amounts of RAM
// (in the order of hundreds of KB)
pub const DEFAULT_BUF_SIZE: usize = if cfg!(target_os = "espidf") { 512 } else { 8 * 1024 };
#[cfg(test)]
#[allow(dead_code)] // not used on emscripten
pub mod test {
use crate::env;
use crate::fs;
use crate::path::{Path, PathBuf};
use crate::thread;
use rand::RngCore;
pub struct TempDir(PathBuf);
impl TempDir {
pub fn join(&self, path: &str) -> PathBuf {
let TempDir(ref p) = *self;
p.join(path)
}
pub fn path(&self) -> &Path {
let TempDir(ref p) = *self;
p
}
}
impl Drop for TempDir {
fn drop(&mut self) {
// Gee, seeing how we're testing the fs module I sure hope that we
// at least implement this correctly!
let TempDir(ref p) = *self;
let result = fs::remove_dir_all(p);
// Avoid panicking while panicking as this causes the process to
// immediately abort, without displaying test results.
if !thread::panicking() {
result.unwrap();
}
}
}
#[track_caller] // for `test_rng`
pub fn tmpdir() -> TempDir {
let p = env::temp_dir();
let mut r = crate::test_helpers::test_rng();
let ret = p.join(&format!("rust-{}", r.next_u32()));
fs::create_dir(&ret).unwrap();
TempDir(ret)
}
}
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