proptest/test_runner/failure_persistence/
map.rsuse crate::std_facade::{fmt, BTreeMap, BTreeSet, Box, Vec};
use core::any::Any;
use crate::test_runner::failure_persistence::FailurePersistence;
use crate::test_runner::failure_persistence::PersistedSeed;
#[derive(Clone, Debug, Default, PartialEq)]
pub struct MapFailurePersistence {
pub map: BTreeMap<&'static str, BTreeSet<PersistedSeed>>,
}
impl FailurePersistence for MapFailurePersistence {
fn load_persisted_failures2(
&self,
source_file: Option<&'static str>,
) -> Vec<PersistedSeed> {
source_file
.and_then(|source| self.map.get(source))
.map(|seeds| seeds.iter().cloned().collect::<Vec<_>>())
.unwrap_or_default()
}
fn save_persisted_failure2(
&mut self,
source_file: Option<&'static str>,
seed: PersistedSeed,
_shrunken_value: &dyn fmt::Debug,
) {
let s = match source_file {
Some(sf) => sf,
None => return,
};
let set = self.map.entry(s).or_insert_with(BTreeSet::new);
set.insert(seed);
}
fn box_clone(&self) -> Box<dyn FailurePersistence> {
Box::new(self.clone())
}
fn eq(&self, other: &dyn FailurePersistence) -> bool {
other
.as_any()
.downcast_ref::<Self>()
.map_or(false, |x| x == self)
}
fn as_any(&self) -> &dyn Any {
self
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::test_runner::failure_persistence::tests::*;
#[test]
fn initial_map_is_empty() {
assert!(MapFailurePersistence::default()
.load_persisted_failures2(HI_PATH)
.is_empty())
}
#[test]
fn seeds_recoverable() {
let mut p = MapFailurePersistence::default();
p.save_persisted_failure2(HI_PATH, INC_SEED, &"");
let restored = p.load_persisted_failures2(HI_PATH);
assert_eq!(1, restored.len());
assert_eq!(INC_SEED, *restored.first().unwrap());
assert!(p.load_persisted_failures2(None).is_empty());
assert!(p.load_persisted_failures2(UNREL_PATH).is_empty());
}
#[test]
fn seeds_deduplicated() {
let mut p = MapFailurePersistence::default();
p.save_persisted_failure2(HI_PATH, INC_SEED, &"");
p.save_persisted_failure2(HI_PATH, INC_SEED, &"");
let restored = p.load_persisted_failures2(HI_PATH);
assert_eq!(1, restored.len());
}
}