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Add failing test for extending struct list

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This commit is contained in:
Paul Hauner
2019-04-12 15:05:26 +10:00
parent 55ee8e20ae
commit 48cf75e394
3 changed files with 140 additions and 30 deletions
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20
eth2/utils/ssz/src/cached_tree_hash/impls.rs
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@@ -127,12 +127,28 @@ where
}
ItemType::Composite | ItemType::List => {
let mut i = offset_handler.num_leaf_nodes;
for start_chunk in offset_handler.iter_leaf_nodes().rev() {
for &start_chunk in offset_handler.iter_leaf_nodes().rev() {
i -= 1;
match (other.get(i), self.get(i)) {
// The item existed in the previous list and exsits in the current list.
(Some(old), Some(new)) => {
new.cached_hash_tree_root(old, cache, *start_chunk)?;
new.cached_hash_tree_root(old, cache, start_chunk)?;
}
// The item existed in the previous list but does not exist in this list.
//
// I.e., the list has been shortened.
(Some(old), None) => {
// Splice out the entire tree of the removed node, replacing it with a
// single padding node.
let end_chunk = OffsetHandler::new(old, start_chunk)?.next_node();
cache.chunk_splice(start_chunk..end_chunk, vec![0; HASHSIZE]);
}
// The item existed in the previous list but does exist in this list.
//
// I.e., the list has been lengthened.
(None, Some(new)) => {
let bytes: Vec<u8> = TreeHashCache::new(new)?.into();
cache.chunk_splice(start_chunk..start_chunk + 1, bytes);
}
// The item didn't exist in the old list and doesn't exist in the new list,
// nothing to do.