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use core::any::Any;
use core::fmt;
use test_runner::failure_persistence::FailurePersistence;
#[cfg(all(feature = "alloc", not(feature = "std")))]
use alloc::boxed::Box;
#[cfg(feature = "std")]
use std::boxed::Box;
#[cfg(all(feature = "alloc", not(feature="std")))]
use alloc::vec::Vec;
#[cfg(feature = "std")]
use std::vec::Vec;
#[cfg(all(feature = "alloc", not(feature="std")))]
use alloc::{BTreeMap, BTreeSet};
#[cfg(feature = "std")]
use std::collections::{BTreeMap, BTreeSet};
#[derive(Clone, Debug, PartialEq)]
pub struct MapFailurePersistence {
pub map: BTreeMap<&'static str, BTreeSet<[u32;4]>>
}
impl FailurePersistence for MapFailurePersistence {
fn load_persisted_failures(&self, source_file: Option<&'static str>) -> Vec<[u32; 4]> {
source_file
.and_then(|source| self.map.get(source))
.map(|seeds| seeds.iter().cloned().collect::<Vec<_>>())
.unwrap_or(Vec::new())
}
fn save_persisted_failure(
&mut self,
source_file: Option<&'static str>,
seed: [u32; 4],
_shrunken_value: &fmt::Debug,
) {
let s = match source_file {
Some(sf) => sf,
None => return
};
let set = self.map.entry(s).or_insert(BTreeSet::new());
set.insert(seed);
}
fn box_clone(&self) -> Box<FailurePersistence> {
Box::new(self.clone())
}
fn eq(&self, other: &FailurePersistence) -> bool {
other.as_any().downcast_ref::<Self>().map_or(false, |x| x == self)
}
fn as_any(&self) -> &Any { self }
}
impl Default for MapFailurePersistence {
fn default() -> Self {
MapFailurePersistence { map: BTreeMap::default() }
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn initial_map_is_empty() {
assert!(MapFailurePersistence::default().load_persisted_failures(Some("hi")).is_empty())
}
#[test]
fn seeds_recoverable() {
let mut p = MapFailurePersistence::default();
let seed = [0u32, 1, 2, 3];
let key = Some("hi");
p.save_persisted_failure(key, seed, &"");
let restored = p.load_persisted_failures(key);
assert_eq!(1, restored.len());
assert_eq!(seed, *restored.first().unwrap());
assert!(p.load_persisted_failures(None).is_empty());
assert!(p.load_persisted_failures(Some("unrelated")).is_empty());
}
#[test]
fn seeds_deduplicated() {
let mut p = MapFailurePersistence::default();
let seed = [0u32, 1, 2, 3];
let key = Some("hi");
p.save_persisted_failure(key, seed, &"");
p.save_persisted_failure(key, seed, &"");
let restored = p.load_persisted_failures(key);
assert_eq!(1, restored.len());
}
}