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Improve cached hash testing in types

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Paul Hauner 2019-04-29 10:57:39 +10:00
parent fbf8fad4f1
commit 52695c29e8
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1 changed files with 20 additions and 4 deletions
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24
eth2/types/src/test_utils/macros.rs
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@ -46,21 +46,37 @@ macro_rules! cached_tree_hash_tests {
// Test the original hash
let original = $type::random_for_test(&mut rng);
let mut hasher = cached_tree_hash::CachedTreeHasher::new(&original).unwrap();
let mut cache = cached_tree_hash::TreeHashCache::new(&original, 0).unwrap();
assert_eq!(
hasher.tree_hash_root().unwrap(),
cache.tree_hash_root().unwrap().to_vec(),
original.tree_hash_root(),
"Original hash failed."
);
// Test the updated hash
let modified = $type::random_for_test(&mut rng);
hasher.update(&modified).unwrap();
cache.update(&modified).unwrap();
assert_eq!(
hasher.tree_hash_root().unwrap(),
cache.tree_hash_root().unwrap().to_vec(),
modified.tree_hash_root(),
"Modification hash failed"
);
// Produce a new cache for the modified object and compare it to the updated cache.
let mut modified_cache = cached_tree_hash::TreeHashCache::new(&modified, 0).unwrap();
// Reset the caches.
cache.reset_modifications();
modified_cache.reset_modifications();
// Ensure the modified cache is the same as a newly created cache. This is a sanity
// check to make sure there are no artifacts of the original cache remaining after an
// update.
assert_eq!(
modified_cache, cache,
"The modified cache does not match a new cache."
)
}
};
}