ps_ecc/cow/implementations/
hash.rs

1use std::hash::{Hash, Hasher};
2
3use crate::Cow;
4
5impl Hash for Cow<'_> {
6    fn hash<H: Hasher>(&self, state: &mut H) {
7        (**self).hash(state);
8    }
9}
10
11#[cfg(test)]
12mod tests {
13    use std::hash::{DefaultHasher, Hash, Hasher};
14
15    use ps_buffer::Buffer;
16
17    use crate::Cow;
18
19    type TestError = Box<dyn std::error::Error>;
20
21    fn hash(value: &Cow) -> u64 {
22        let mut hasher = DefaultHasher::new();
23
24        value.hash(&mut hasher);
25
26        hasher.finish()
27    }
28
29    #[test]
30    fn test_hash_agrees_across_variants() -> Result<(), TestError> {
31        let borrowed = Cow::Borrowed(b"abc");
32        let owned = Cow::Owned(Buffer::from_slice(b"abc")?.share());
33
34        assert_eq!(hash(&borrowed), hash(&owned));
35
36        Ok(())
37    }
38}

ps_ecc/cow/implementations/hash.rs

ps_ecc/cow/implementations/
hash.rs