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: uncle.rs
    path of file: ./repos/ckb/chain/src/tests
    
    the code of the file until where you have to start completion: use crate::chain::ChainService;
use ckb_chain_spec::consensus::Consensus;
use ckb_shared::SharedBuilder;
use ckb_store::ChainStore;
use ckb_test_chain_utils::{MockChain, MockStore};
use ckb_verification_traits::Switch;
use std::sync::Arc;

#[test]
fn test_get_block_body_after_inserting() {
    let builder = SharedBuilder::with_temp_db();
    let (shared, mut pack) = builder.consensus(Consensus::default()).build().unwrap();
    let mut chain_service = ChainService::new(shared.clone(), pack.take_proposal_table());
    let genesis = shared
        .store()
        .get_block_header(&shared.store().get_block_hash(0).unwrap())
        .unwrap();

    let parent = genesis;
    let mock_store = MockStore::new(&parent, shared.store());
    let mut fork1 = MockChain::new(pa
    
fn test_get_block_body_after_inserting() {
    let builder = SharedBuilder::with_temp_db();
    let (shared, mut pack) = builder.consensus(Consensus::default()).build().unwrap();
    let mut chain_service = ChainService::new(shared.clone(), pack.take_proposal_table());
    let genesis = shared
        .store()
        .get_block_header(&shared.store().get_block_hash(0).unwrap())
        .unwrap();

    let parent = genesis;
    let mock_store = MockStore::new(&parent, shared.store());
    let mut fork1 = MockChain::new(parent.clone(), shared.consensus());
    let mut fork2 = MockChain::new(parent, shared.consensus());
    for _ in 0..4 {
        fork1.gen_empty_block_with_diff(100u64, &mock_store);
        fork2.gen_empty_block_with_diff(90u64, &mock_store);
    }

    for blk in fork1.blocks() {
        chain_service
            .process_block(Arc::new(blk.clone()), Switch::DISABLE_ALL)
            .unwrap();
        let len = shared.snapshot().get_block_body(&blk.hash()).len();
        assert_eq!(len, 1, "[fork1] snapshot.get_block_body({})", blk.hash(),);
    }
    for blk in fork2.blocks() {
        chain_service
            .process_block(Arc::new(blk.clone()), Switch::DISABLE_ALL)
            .unwrap();
        let snapshot = shared.snapshot();
        assert!(snapshot.get_block_header(&blk.hash()).is_some());
        assert!(snapshot.get_block_uncles(&blk.hash()).is_some());
        assert!(snapshot.get_block_proposal_txs_ids(&blk.hash()).is_some());
        let len = snapshot.get_block_body(&blk.hash()).len();
        assert_eq!(len, 1, "[fork2] snapshot.get_block_body({})", blk.hash(),);
    }
}