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Add vector type to tree hashing

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This commit is contained in:
Paul Hauner
2019-04-17 10:57:36 +10:00
parent 49d066015b
commit af39f096e7
11 changed files with 211 additions and 72 deletions
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34
eth2/utils/tree_hash/tests/tests.rs
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@@ -13,7 +13,7 @@ pub struct InternalCache {
impl TreeHash for InternalCache {
fn tree_hash_type() -> TreeHashType {
TreeHashType::Composite
TreeHashType::Container
}
fn tree_hash_packed_encoding(&self) -> Vec<u8> {
@@ -146,7 +146,7 @@ pub struct Inner {
impl TreeHash for Inner {
fn tree_hash_type() -> TreeHashType {
TreeHashType::Composite
TreeHashType::Container
}
fn tree_hash_packed_encoding(&self) -> Vec<u8> {
@@ -231,7 +231,7 @@ pub struct Outer {
impl TreeHash for Outer {
fn tree_hash_type() -> TreeHashType {
TreeHashType::Composite
TreeHashType::Container
}
fn tree_hash_packed_encoding(&self) -> Vec<u8> {
@@ -894,11 +894,39 @@ fn vec_of_u64_builds() {
let my_vec = vec![1, 2, 3, 4, 5];
//
// Note: the length is not mixed-in in this example. The user must ensure the length is
// mixed-in.
//
let cache: Vec<u8> = TreeHashCache::new(&my_vec).unwrap().into();
assert_eq!(expected, cache);
}
#[test]
fn vec_does_mix_in_len() {
let data = join(vec![
int_to_bytes8(1),
int_to_bytes8(2),
int_to_bytes8(3),
int_to_bytes8(4),
int_to_bytes8(5),
vec![0; 32 - 8], // padding
]);
let tree = merkleize(data);
let my_vec: Vec<u64> = vec![1, 2, 3, 4, 5];
let mut expected = vec![0; 32];
expected.copy_from_slice(&tree[0..HASHSIZE]);
expected.append(&mut int_to_bytes32(my_vec.len() as u64));
let expected = hash(&expected);
assert_eq!(&expected[0..HASHSIZE], &my_vec.tree_hash_root()[..]);
}
#[test]
fn merkleize_odd() {
let data = join(vec![