You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: test_stats.rs
    path of file: ./repos/tikv/tests/failpoints/cases
    
    the code of the file until where you have to start completion: // Copyright 2022 TiKV Project Authors. Licensed under Apache-2.0.

use kvproto::kvrpcpb::*;
use test_raftstore::*;
use tikv_util::config::*;

#[test]
fn test_bucket_stats() {
    let (mut cluster, client, ctx) = must_new_and_configure_cluster_and_kv_client(|cluster| {
        cluster.cfg.coprocessor.enable_region_bucket = Some(true);
        cluster.cfg.raft_store.split_region_check_tick_interval = ReadableDuration::days(1);
        cluster.cfg.raft_store.report_region_buckets_tick_interval = ReadableDuration::millis(100);
    });

    let fp 
    
fn test_bucket_stats() {
    let (mut cluster, client, ctx) = must_new_and_configure_cluster_and_kv_client(|cluster| {
        cluster.cfg.coprocessor.enable_region_bucket = Some(true);
        cluster.cfg.raft_store.split_region_check_tick_interval = ReadableDuration::days(1);
        cluster.cfg.raft_store.report_region_buckets_tick_interval = ReadableDuration::millis(100);
    });

    let fp = "mock_tick_interval";
    fail::cfg(fp, "return(0)").unwrap();

    sleep_ms(200);
    let mut keys = Vec::with_capacity(50);
    for i in 0..50u8 {
        let key = vec![b'k', i];
        cluster.must_put(&key, &[b' '; 4]);
        cluster.must_get(&[b'k', i]);
        keys.push(key);
    }
    let mut req = RawBatchGetRequest::default();
    req.set_context(ctx);
    req.set_keys(protobuf::RepeatedField::from(keys));
    client.raw_batch_get(&req).unwrap();
    sleep_ms(600);
    let buckets = cluster.must_get_buckets(1);
    assert_eq!(buckets.meta.keys.len(), 2);
    assert_eq!(buckets.stats.get_write_keys(), [50]);
    assert_eq!(buckets.stats.get_write_bytes(), [50 * (4 + 2)]);
    assert_eq!(buckets.stats.get_read_keys(), [50]);
    assert_eq!(buckets.stats.get_read_bytes(), [50 * (4 + 2)]);
    fail::remove(fp);
}