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cell.rs
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cell.rs
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use crate::tests::util::{calculate_reward, create_always_success_tx, start_chain, MockStore};
use ckb_chain_spec::consensus::{Consensus, ConsensusBuilder};
use ckb_dao_utils::genesis_dao_data;
use ckb_shared::shared::Shared;
use ckb_store::{attach_block_cell, detach_block_cell, ChainStore};
use ckb_test_chain_utils::always_success_cell;
use ckb_types::prelude::*;
use ckb_types::{
bytes::Bytes,
core::{
capacity_bytes,
cell::{CellProvider, CellStatus},
BlockBuilder, BlockView, Capacity, EpochNumberWithFraction, HeaderView, TransactionBuilder,
TransactionView,
},
packed::{CellInput, CellOutputBuilder, OutPoint},
utilities::DIFF_TWO,
};
const TX_FEE: Capacity = capacity_bytes!(10);
#[allow(clippy::int_plus_one)]
pub(crate) fn create_cellbase(
parent: &HeaderView,
store: &MockStore,
consensus: &Consensus,
) -> TransactionView {
let number = parent.number() + 1;
let capacity = calculate_reward(store, consensus, parent);
let builder = TransactionBuilder::default().input(CellInput::new_cellbase_input(number));
if (parent.number() + 1) <= consensus.finalization_delay_length() {
builder.build()
} else {
builder
.output(
CellOutputBuilder::default()
.capacity(capacity.pack())
.build(),
)
.output_data(Bytes::new().pack())
.build()
}
}
#[allow(clippy::too_many_arguments)]
pub(crate) fn gen_block(
parent_header: &HeaderView,
transactions: Vec<TransactionView>,
shared: &Shared,
store: &MockStore,
) -> BlockView {
let number = parent_header.number() + 1;
let consensus = shared.consensus();
let cellbase = create_cellbase(parent_header, store, consensus);
let mut txs = vec![cellbase];
txs.extend_from_slice(&transactions);
let epoch = shared
.consensus()
.next_epoch_ext(parent_header, &shared.store().as_data_provider())
.unwrap()
.epoch();
let block = BlockBuilder::default()
.parent_hash(parent_header.hash())
.timestamp((parent_header.timestamp() + 20_000).pack())
.number(number.pack())
.compact_target(epoch.compact_target().pack())
.epoch(epoch.number_with_fraction(number).pack())
.transactions(txs)
.build();
store.insert_block(&block, consensus.genesis_epoch_ext());
block
}
pub(crate) fn create_transaction(parent: &TransactionView, index: u32) -> TransactionView {
let input_cap: Capacity = parent
.outputs()
.get(0)
.expect("get output index 0")
.capacity()
.unpack();
TransactionBuilder::default()
.output(
CellOutputBuilder::default()
.capacity(input_cap.safe_sub(TX_FEE).unwrap().pack())
.build(),
)
.input(CellInput::new(OutPoint::new(parent.hash(), index), 0))
.output_data(Bytes::new().pack())
.build()
}
#[test]
fn test_block_cells_update() {
let (_, _, always_success_script) = always_success_cell();
let always_success_tx = create_always_success_tx();
let issue_tx = TransactionBuilder::default()
.input(CellInput::new(OutPoint::null(), 0))
.output(
CellOutputBuilder::default()
.capacity(capacity_bytes!(5_000).pack())
.lock(always_success_script.clone())
.build(),
)
.output_data(Bytes::new().pack())
.build();
let dao = genesis_dao_data(vec![&always_success_tx, &issue_tx]).unwrap();
let genesis_block = BlockBuilder::default()
.transaction(always_success_tx)
.transaction(issue_tx.clone())
.compact_target(DIFF_TWO.pack())
.dao(dao)
.build();
let consensus = ConsensusBuilder::default()
.cellbase_maturity(EpochNumberWithFraction::new(0, 0, 1))
.genesis_block(genesis_block)
.build();
let (_chain_controller, shared, parent) = start_chain(Some(consensus));
let mock_store = MockStore::new(&parent, shared.store());
let tx0 = create_transaction(&issue_tx, 0);
let tx1 = create_transaction(&tx0, 0);
let tx2 = create_transaction(&tx1, 0);
let tx3 = create_transaction(&tx2, 0);
let block = gen_block(&parent, vec![tx0, tx1, tx2, tx3], &shared, &mock_store);
let db_txn = shared.store().begin_transaction();
db_txn.insert_block(&block).unwrap();
db_txn.attach_block(&block).unwrap();
attach_block_cell(&db_txn, &block).unwrap();
let txn_cell_provider = &db_txn;
// ensure tx0-2 outputs is spent after attach_block_cell
for tx in block.transactions()[1..4].iter() {
for pt in tx.output_pts() {
// full spent
assert_eq!(txn_cell_provider.cell(&pt, false), CellStatus::Unknown);
}
}
// ensure tx3 outputs is unspent after attach_block_cell
for pt in block.transactions()[4].output_pts() {
assert!(txn_cell_provider.cell(&pt, false).is_live());
}
// ensure issue_tx outputs is spent after attach_block_cell
assert_eq!(
txn_cell_provider.cell(&issue_tx.output_pts()[0], false),
CellStatus::Unknown
);
detach_block_cell(&db_txn, &block).unwrap();
// ensure tx0-3 outputs is unknown after detach_block_cell
for tx in block.transactions()[1..=4].iter() {
for pt in tx.output_pts() {
assert_eq!(txn_cell_provider.cell(&pt, false), CellStatus::Unknown);
}
}
// ensure issue_tx outputs is back to live after detach_block_cell
assert!(txn_cell_provider
.cell(&issue_tx.output_pts()[0], false)
.is_live());
}