//! Tests and test methods for low-level RocksDB access.
#![allow(dead_code)]
use std::ops::Deref;
use crate::service::finalized_state::disk_db::{DiskDb, DB};
// Enable older test code to automatically access the inner database via Deref coercion.
impl Deref for DiskDb {
type Target = DB;
fn deref(&self) -> &Self::Target {
&self.db
}
}
impl DiskDb {
/// Returns a list of column family names in this database.
pub fn list_cf(&self) -> Result<Vec<String>, rocksdb::Error> {
let opts = DiskDb::options();
let path = self.path();
rocksdb::DB::list_cf(&opts, path)
}
}
/// Check that zs_iter_opts returns an upper bound one greater than provided inclusive end bounds.
#[test]
fn zs_iter_opts_increments_key_by_one() {
let _init_guard = zebra_test::init();
// TODO: add an empty key (`()` type or `[]` when serialized) test case
let keys: [u32; 14] = [
0,
1,
200,
255,
256,
257,
65535,
65536,
65537,
16777215,
16777216,
16777217,
16777218,
u32::MAX,
];
for key in keys {
let (_, bytes) = DiskDb::zs_iter_bounds(&..=key.to_be_bytes().to_vec());
let mut extra_bytes = bytes.expect("there should be an upper bound");
let bytes = extra_bytes.split_off(extra_bytes.len() - 4);
let upper_bound = u32::from_be_bytes(bytes.clone().try_into().expect("should be 4 bytes"));
let expected_upper_bound = key.wrapping_add(1);
assert_eq!(
expected_upper_bound, upper_bound,
"the upper bound should be 1 greater than the original key"
);
if expected_upper_bound == 0 {
assert_eq!(
extra_bytes,
vec![1],
"there should be an extra byte with a value of 1"
);
} else {
assert_eq!(extra_bytes.len(), 0, "there should be no extra bytes");
}
}
}