mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-01 10:07:56 +00:00
thiolliere
ffce18b994
* partial impl * more checks * improve TestExternalities + tests * make tombstone raw to derive Eq * remove before merge * add test * fmt * update test * doc * bump version * fix testing * update runtime * Fix TrieIdGenerator * fix dummy trie id generator * update test * bump version * format * Update core/state-machine/src/testing.rs Co-Authored-By: cheme <emericchevalier.pro@gmail.com> * document test * Apply suggestions from code review Co-Authored-By: DemiMarie-temp <50585338+DemiMarie-temp@users.noreply.github.com> * refactor * fix * fmt * address review * impl last_write * Fix storage size, test, remove size in tombstone * fix * Update srml/contract/src/lib.rs Co-Authored-By: Sergei Pepyakin <s.pepyakin@gmail.com> * comment * child_storage_root as &[u8]
1229 lines
36 KiB
Rust
1229 lines
36 KiB
Rust
// Copyright 2018-2019 Parity Technologies (UK) Ltd.
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// This file is part of Substrate.
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// Substrate is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Substrate is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Substrate. If not, see <http://www.gnu.org/licenses/>.
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// TODO: #1417 Add more integration tests
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// also remove the #![allow(unused)] below.
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#![allow(unused)]
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use crate::account_db::{AccountDb, DirectAccountDb, OverlayAccountDb};
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use crate::{
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BalanceOf, ComputeDispatchFee, ContractAddressFor, ContractInfo, ContractInfoOf, GenesisConfig,
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Module, RawAliveContractInfo, RawEvent, Trait, TrieId, TrieIdFromParentCounter, TrieIdGenerator,
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};
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use assert_matches::assert_matches;
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use hex_literal::*;
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use parity_codec::{Decode, Encode, KeyedVec};
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use runtime_io;
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use runtime_io::with_externalities;
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use runtime_primitives::testing::{Digest, DigestItem, Header, UintAuthorityId, H256};
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use runtime_primitives::traits::{BlakeTwo256, IdentityLookup};
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use runtime_primitives::BuildStorage;
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use srml_support::{
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assert_ok, impl_outer_dispatch, impl_outer_event, impl_outer_origin, storage::child,
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traits::Currency, StorageMap, StorageValue
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};
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use std::sync::atomic::{AtomicUsize, Ordering};
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use substrate_primitives::storage::well_known_keys;
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use substrate_primitives::Blake2Hasher;
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use system::{self, EventRecord, Phase};
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use {balances, consensus, wabt};
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mod contract {
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// Re-export contents of the root. This basically
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// needs to give a name for the current crate.
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// This hack is required for `impl_outer_event!`.
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pub use super::super::*;
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use srml_support::impl_outer_event;
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}
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impl_outer_event! {
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pub enum MetaEvent for Test {
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balances<T>, contract<T>,
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}
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}
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impl_outer_origin! {
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pub enum Origin for Test { }
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}
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impl_outer_dispatch! {
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pub enum Call for Test where origin: Origin {
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balances::Balances,
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contract::Contract,
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}
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}
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#[derive(Clone, Eq, PartialEq, Debug)]
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pub struct Test;
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impl system::Trait for Test {
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type Origin = Origin;
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type Index = u64;
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type BlockNumber = u64;
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type Hash = H256;
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type Hashing = BlakeTwo256;
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type Digest = Digest;
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type AccountId = u64;
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type Lookup = IdentityLookup<Self::AccountId>;
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type Header = Header;
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type Event = MetaEvent;
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type Log = DigestItem;
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}
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impl balances::Trait for Test {
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type Balance = u64;
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type OnFreeBalanceZero = Contract;
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type OnNewAccount = ();
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type Event = MetaEvent;
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type TransactionPayment = ();
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type DustRemoval = ();
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type TransferPayment = ();
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}
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impl timestamp::Trait for Test {
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type Moment = u64;
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type OnTimestampSet = ();
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}
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impl consensus::Trait for Test {
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type Log = DigestItem;
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type SessionKey = UintAuthorityId;
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type InherentOfflineReport = ();
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}
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impl Trait for Test {
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type Currency = Balances;
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type Call = Call;
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type Gas = u64;
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type DetermineContractAddress = DummyContractAddressFor;
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type Event = MetaEvent;
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type ComputeDispatchFee = DummyComputeDispatchFee;
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type TrieIdGenerator = DummyTrieIdGenerator;
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type GasPayment = ();
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}
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type Balances = balances::Module<Test>;
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type Contract = Module<Test>;
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type System = system::Module<Test>;
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pub struct DummyContractAddressFor;
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impl ContractAddressFor<H256, u64> for DummyContractAddressFor {
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fn contract_address_for(_code_hash: &H256, _data: &[u8], origin: &u64) -> u64 {
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*origin + 1
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}
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}
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pub struct DummyTrieIdGenerator;
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impl TrieIdGenerator<u64> for DummyTrieIdGenerator {
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fn trie_id(account_id: &u64) -> TrieId {
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use substrate_primitives::storage::well_known_keys;
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let new_seed = <super::AccountCounter<Test>>::mutate(|v| {
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*v = v.wrapping_add(1);
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*v
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});
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// TODO: see https://github.com/paritytech/substrate/issues/2325
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let mut res = vec![];
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res.extend_from_slice(well_known_keys::CHILD_STORAGE_KEY_PREFIX);
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res.extend_from_slice(b"default:");
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res.extend_from_slice(&new_seed.to_le_bytes());
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res.extend_from_slice(&account_id.to_le_bytes());
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res
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}
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}
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pub struct DummyComputeDispatchFee;
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impl ComputeDispatchFee<Call, u64> for DummyComputeDispatchFee {
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fn compute_dispatch_fee(call: &Call) -> u64 {
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69
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}
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}
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const ALICE: u64 = 1;
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const BOB: u64 = 2;
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const CHARLIE: u64 = 3;
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const DJANGO: u64 = 4;
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pub struct ExtBuilder {
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existential_deposit: u64,
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gas_price: u64,
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block_gas_limit: u64,
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transfer_fee: u64,
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creation_fee: u64,
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}
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impl Default for ExtBuilder {
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fn default() -> Self {
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Self {
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existential_deposit: 0,
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gas_price: 2,
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block_gas_limit: 100_000_000,
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transfer_fee: 0,
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creation_fee: 0,
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}
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}
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}
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impl ExtBuilder {
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pub fn existential_deposit(mut self, existential_deposit: u64) -> Self {
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self.existential_deposit = existential_deposit;
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self
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}
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pub fn gas_price(mut self, gas_price: u64) -> Self {
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self.gas_price = gas_price;
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self
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}
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pub fn block_gas_limit(mut self, block_gas_limit: u64) -> Self {
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self.block_gas_limit = block_gas_limit;
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self
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}
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pub fn transfer_fee(mut self, transfer_fee: u64) -> Self {
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self.transfer_fee = transfer_fee;
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self
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}
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pub fn creation_fee(mut self, creation_fee: u64) -> Self {
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self.creation_fee = creation_fee;
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self
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}
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pub fn build(self) -> runtime_io::TestExternalities<Blake2Hasher> {
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let mut t = system::GenesisConfig::<Test>::default()
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.build_storage()
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.unwrap()
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.0;
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t.extend(
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balances::GenesisConfig::<Test> {
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transaction_base_fee: 0,
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transaction_byte_fee: 0,
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balances: vec![],
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existential_deposit: self.existential_deposit,
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transfer_fee: self.transfer_fee,
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creation_fee: self.creation_fee,
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vesting: vec![],
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}
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.build_storage()
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.unwrap()
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.0,
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);
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t.extend(
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GenesisConfig::<Test> {
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signed_claim_handicap: 2,
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rent_byte_price: 4,
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rent_deposit_offset: 10_000,
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storage_size_offset: 8,
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surcharge_reward: 150,
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tombstone_deposit: 16,
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transaction_base_fee: 2,
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transaction_byte_fee: 6,
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transfer_fee: self.transfer_fee,
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creation_fee: self.creation_fee,
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contract_fee: 21,
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call_base_fee: 135,
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create_base_fee: 175,
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gas_price: self.gas_price,
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max_depth: 100,
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block_gas_limit: self.block_gas_limit,
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current_schedule: Default::default(),
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}
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.build_storage()
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.unwrap()
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.0,
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);
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runtime_io::TestExternalities::new(t)
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}
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}
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#[test]
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fn refunds_unused_gas() {
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with_externalities(&mut ExtBuilder::default().build(), || {
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Balances::deposit_creating(&0, 100_000_000);
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assert_ok!(Contract::call(Origin::signed(0), 1, 0, 100_000, Vec::new()));
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assert_eq!(Balances::free_balance(&0), 100_000_000 - (2 * 135));
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});
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}
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#[test]
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fn account_removal_removes_storage() {
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with_externalities(
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&mut ExtBuilder::default().existential_deposit(100).build(),
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|| {
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let trie_id1 = <Test as Trait>::TrieIdGenerator::trie_id(&1);
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let trie_id2 = <Test as Trait>::TrieIdGenerator::trie_id(&2);
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let key1 = &[1; 32];
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let key2 = &[2; 32];
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// Set up two accounts with free balance above the existential threshold.
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{
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Balances::deposit_creating(&1, 110);
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ContractInfoOf::<Test>::insert(1, &ContractInfo::Alive(RawAliveContractInfo {
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trie_id: trie_id1.clone(),
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storage_size: Contract::storage_size_offset(),
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deduct_block: System::block_number(),
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code_hash: H256::repeat_byte(1),
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rent_allowance: 40,
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last_write: None,
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}));
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let mut overlay = OverlayAccountDb::<Test>::new(&DirectAccountDb);
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overlay.set_storage(&1, key1.clone(), Some(b"1".to_vec()));
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overlay.set_storage(&1, key2.clone(), Some(b"2".to_vec()));
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DirectAccountDb.commit(overlay.into_change_set());
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Balances::deposit_creating(&2, 110);
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ContractInfoOf::<Test>::insert(2, &ContractInfo::Alive(RawAliveContractInfo {
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trie_id: trie_id2.clone(),
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storage_size: Contract::storage_size_offset(),
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deduct_block: System::block_number(),
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code_hash: H256::repeat_byte(2),
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rent_allowance: 40,
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last_write: None,
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}));
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let mut overlay = OverlayAccountDb::<Test>::new(&DirectAccountDb);
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overlay.set_storage(&2, key1.clone(), Some(b"3".to_vec()));
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overlay.set_storage(&2, key2.clone(), Some(b"4".to_vec()));
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DirectAccountDb.commit(overlay.into_change_set());
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}
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// Transfer funds from account 1 of such amount that after this transfer
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// the balance of account 1 will be below the existential threshold.
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//
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// This should lead to the removal of all storage associated with this account.
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assert_ok!(Balances::transfer(Origin::signed(1), 2, 20));
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// Verify that all entries from account 1 is removed, while
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// entries from account 2 is in place.
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{
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assert!(<AccountDb<Test>>::get_storage(&DirectAccountDb, &1, Some(&trie_id1), key1).is_none());
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assert!(<AccountDb<Test>>::get_storage(&DirectAccountDb, &1, Some(&trie_id1), key2).is_none());
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assert_eq!(
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<AccountDb<Test>>::get_storage(&DirectAccountDb, &2, Some(&trie_id2), key1),
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Some(b"3".to_vec())
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);
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assert_eq!(
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<AccountDb<Test>>::get_storage(&DirectAccountDb, &2, Some(&trie_id2), key2),
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Some(b"4".to_vec())
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);
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}
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},
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);
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}
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const CODE_RETURN_FROM_START_FN: &str = r#"
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(module
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(import "env" "ext_return" (func $ext_return (param i32 i32)))
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(import "env" "ext_deposit_event" (func $ext_deposit_event (param i32 i32 i32 i32)))
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(import "env" "memory" (memory 1 1))
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(start $start)
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(func $start
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(call $ext_deposit_event
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(i32.const 0) ;; The topics buffer
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(i32.const 0) ;; The topics buffer's length
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(i32.const 8) ;; The data buffer
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(i32.const 4) ;; The data buffer's length
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)
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(call $ext_return
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(i32.const 8)
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(i32.const 4)
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)
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(unreachable)
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)
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(func (export "call")
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(unreachable)
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)
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(func (export "deploy"))
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(data (i32.const 8) "\01\02\03\04")
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)
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"#;
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const HASH_RETURN_FROM_START_FN: [u8; 32] = hex!("66c45bd7c473a1746e1d241176166ef53b1f207f56c5e87d1b6650140704181b");
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#[test]
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fn instantiate_and_call_and_deposit_event() {
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let wasm = wabt::wat2wasm(CODE_RETURN_FROM_START_FN).unwrap();
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with_externalities(
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&mut ExtBuilder::default().existential_deposit(100).build(),
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|| {
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Balances::deposit_creating(&ALICE, 1_000_000);
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assert_ok!(Contract::put_code(Origin::signed(ALICE), 100_000, wasm));
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// Check at the end to get hash on error easily
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let creation = Contract::create(
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Origin::signed(ALICE),
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100,
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100_000,
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HASH_RETURN_FROM_START_FN.into(),
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vec![],
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);
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assert_eq!(System::events(), vec![
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EventRecord {
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phase: Phase::ApplyExtrinsic(0),
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event: MetaEvent::balances(balances::RawEvent::NewAccount(1, 1_000_000)),
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topics: vec![],
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},
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EventRecord {
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phase: Phase::ApplyExtrinsic(0),
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event: MetaEvent::contract(RawEvent::CodeStored(HASH_RETURN_FROM_START_FN.into())),
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topics: vec![],
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},
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EventRecord {
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phase: Phase::ApplyExtrinsic(0),
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event: MetaEvent::balances(
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balances::RawEvent::NewAccount(BOB, 100)
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),
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topics: vec![],
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},
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EventRecord {
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phase: Phase::ApplyExtrinsic(0),
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event: MetaEvent::contract(RawEvent::Transfer(ALICE, BOB, 100)),
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topics: vec![],
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},
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EventRecord {
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phase: Phase::ApplyExtrinsic(0),
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event: MetaEvent::contract(RawEvent::Contract(BOB, vec![1, 2, 3, 4])),
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topics: vec![],
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},
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EventRecord {
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phase: Phase::ApplyExtrinsic(0),
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event: MetaEvent::contract(RawEvent::Instantiated(ALICE, BOB)),
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topics: vec![],
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}
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]);
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assert_ok!(creation);
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assert!(ContractInfoOf::<Test>::exists(BOB));
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},
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);
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}
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const CODE_DISPATCH_CALL: &str = r#"
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(module
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(import "env" "ext_dispatch_call" (func $ext_dispatch_call (param i32 i32)))
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(import "env" "memory" (memory 1 1))
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|
|
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(func (export "call")
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(call $ext_dispatch_call
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(i32.const 8) ;; Pointer to the start of encoded call buffer
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(i32.const 11) ;; Length of the buffer
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)
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)
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(func (export "deploy"))
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(data (i32.const 8) "\00\00\03\00\00\00\00\00\00\00\C8")
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)
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"#;
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const HASH_DISPATCH_CALL: [u8; 32] = hex!("49dfdcaf9c1553be10634467e95b8e71a3bc15a4f8bf5563c0312b0902e0afb9");
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|
|
#[test]
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fn dispatch_call() {
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// This test can fail due to the encoding changes. In case it becomes too annoying
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// let's rewrite so as we use this module controlled call or we serialize it in runtime.
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let encoded = Encode::encode(&Call::Balances(balances::Call::transfer(CHARLIE, 50)));
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assert_eq!(&encoded[..], &hex!("00000300000000000000C8")[..]);
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let wasm = wabt::wat2wasm(CODE_DISPATCH_CALL).unwrap();
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|
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with_externalities(
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&mut ExtBuilder::default().existential_deposit(50).build(),
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|| {
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Balances::deposit_creating(&ALICE, 1_000_000);
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assert_ok!(Contract::put_code(Origin::signed(ALICE), 100_000, wasm));
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|
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// Let's keep this assert even though it's redundant. If you ever need to update the
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// wasm source this test will fail and will show you the actual hash.
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assert_eq!(System::events(), vec![
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EventRecord {
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phase: Phase::ApplyExtrinsic(0),
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event: MetaEvent::balances(balances::RawEvent::NewAccount(1, 1_000_000)),
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topics: vec![],
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},
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EventRecord {
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phase: Phase::ApplyExtrinsic(0),
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event: MetaEvent::contract(RawEvent::CodeStored(HASH_DISPATCH_CALL.into())),
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topics: vec![],
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},
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]);
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|
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assert_ok!(Contract::create(
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Origin::signed(ALICE),
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100,
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100_000,
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HASH_DISPATCH_CALL.into(),
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vec![],
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));
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assert_ok!(Contract::call(
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Origin::signed(ALICE),
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BOB, // newly created account
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0,
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100_000,
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vec![],
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));
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|
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assert_eq!(System::events(), vec![
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EventRecord {
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phase: Phase::ApplyExtrinsic(0),
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event: MetaEvent::balances(balances::RawEvent::NewAccount(1, 1_000_000)),
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topics: vec![],
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},
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EventRecord {
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phase: Phase::ApplyExtrinsic(0),
|
|
event: MetaEvent::contract(RawEvent::CodeStored(HASH_DISPATCH_CALL.into())),
|
|
topics: vec![],
|
|
},
|
|
EventRecord {
|
|
phase: Phase::ApplyExtrinsic(0),
|
|
event: MetaEvent::balances(
|
|
balances::RawEvent::NewAccount(BOB, 100)
|
|
),
|
|
topics: vec![],
|
|
},
|
|
EventRecord {
|
|
phase: Phase::ApplyExtrinsic(0),
|
|
event: MetaEvent::contract(RawEvent::Transfer(ALICE, BOB, 100)),
|
|
topics: vec![],
|
|
},
|
|
EventRecord {
|
|
phase: Phase::ApplyExtrinsic(0),
|
|
event: MetaEvent::contract(RawEvent::Instantiated(ALICE, BOB)),
|
|
topics: vec![],
|
|
},
|
|
|
|
// Dispatching the call.
|
|
EventRecord {
|
|
phase: Phase::ApplyExtrinsic(0),
|
|
event: MetaEvent::balances(
|
|
balances::RawEvent::NewAccount(CHARLIE, 50)
|
|
),
|
|
topics: vec![],
|
|
},
|
|
EventRecord {
|
|
phase: Phase::ApplyExtrinsic(0),
|
|
event: MetaEvent::balances(
|
|
balances::RawEvent::Transfer(BOB, CHARLIE, 50, 0)
|
|
),
|
|
topics: vec![],
|
|
},
|
|
|
|
// Event emited as a result of dispatch.
|
|
EventRecord {
|
|
phase: Phase::ApplyExtrinsic(0),
|
|
event: MetaEvent::contract(RawEvent::Dispatched(BOB, true)),
|
|
topics: vec![],
|
|
}
|
|
]);
|
|
},
|
|
);
|
|
}
|
|
|
|
const CODE_SET_RENT: &str = r#"
|
|
(module
|
|
(import "env" "ext_dispatch_call" (func $ext_dispatch_call (param i32 i32)))
|
|
(import "env" "ext_set_storage" (func $ext_set_storage (param i32 i32 i32 i32)))
|
|
(import "env" "ext_set_rent_allowance" (func $ext_set_rent_allowance (param i32 i32)))
|
|
(import "env" "ext_input_size" (func $ext_input_size (result i32)))
|
|
(import "env" "ext_input_copy" (func $ext_input_copy (param i32 i32 i32)))
|
|
(import "env" "memory" (memory 1 1))
|
|
|
|
;; insert a value of 4 bytes into storage
|
|
(func $call_0
|
|
(call $ext_set_storage
|
|
(i32.const 1)
|
|
(i32.const 1)
|
|
(i32.const 0)
|
|
(i32.const 4)
|
|
)
|
|
)
|
|
|
|
;; remove the value inserted by call_1
|
|
(func $call_1
|
|
(call $ext_set_storage
|
|
(i32.const 1)
|
|
(i32.const 0)
|
|
(i32.const 0)
|
|
(i32.const 0)
|
|
)
|
|
)
|
|
|
|
;; transfer 50 to ALICE
|
|
(func $call_2
|
|
(call $ext_dispatch_call
|
|
(i32.const 68)
|
|
(i32.const 11)
|
|
)
|
|
)
|
|
|
|
;; do nothing
|
|
(func $call_else)
|
|
|
|
(func $assert (param i32)
|
|
(block $ok
|
|
(br_if $ok
|
|
(get_local 0)
|
|
)
|
|
(unreachable)
|
|
)
|
|
)
|
|
|
|
;; Dispatch the call according to input size
|
|
(func (export "call")
|
|
(local $input_size i32)
|
|
(set_local $input_size
|
|
(call $ext_input_size)
|
|
)
|
|
(block $IF_ELSE
|
|
(block $IF_2
|
|
(block $IF_1
|
|
(block $IF_0
|
|
(br_table $IF_0 $IF_1 $IF_2 $IF_ELSE
|
|
(get_local $input_size)
|
|
)
|
|
(unreachable)
|
|
)
|
|
(call $call_0)
|
|
return
|
|
)
|
|
(call $call_1)
|
|
return
|
|
)
|
|
(call $call_2)
|
|
return
|
|
)
|
|
(call $call_else)
|
|
)
|
|
|
|
;; Set into storage a 4 bytes value
|
|
;; Set call set_rent_allowance with input
|
|
(func (export "deploy")
|
|
(local $input_size i32)
|
|
(call $ext_set_storage
|
|
(i32.const 0)
|
|
(i32.const 1)
|
|
(i32.const 0)
|
|
(i32.const 4)
|
|
)
|
|
(set_local $input_size
|
|
(call $ext_input_size)
|
|
)
|
|
(call $ext_input_copy
|
|
(i32.const 0)
|
|
(i32.const 0)
|
|
(get_local $input_size)
|
|
)
|
|
(call $ext_set_rent_allowance
|
|
(i32.const 0)
|
|
(get_local $input_size)
|
|
)
|
|
)
|
|
|
|
;; Encoding of 10 in balance
|
|
(data (i32.const 0) "\28")
|
|
|
|
;; Encoding of call transfer 50 to CHARLIE
|
|
(data (i32.const 68) "\00\00\03\00\00\00\00\00\00\00\C8")
|
|
)
|
|
"#;
|
|
|
|
// Use test_hash_and_code test to get the actual hash if the code changed.
|
|
const HASH_SET_RENT: [u8; 32] = hex!("21d6b1d59aa6038fcad632488e9026893a1bbb48581774c771b8f24320697f05");
|
|
|
|
/// Input data for each call in set_rent code
|
|
mod call {
|
|
pub fn set_storage_4_byte() -> Vec<u8> { vec![] }
|
|
pub fn remove_storage_4_byte() -> Vec<u8> { vec![0] }
|
|
pub fn transfer() -> Vec<u8> { vec![0, 0] }
|
|
pub fn null() -> Vec<u8> { vec![0, 0, 0] }
|
|
}
|
|
|
|
/// Test correspondance of set_rent code and its hash.
|
|
/// Also test that encoded extrinsic in code correspond to the correct transfer
|
|
#[test]
|
|
fn test_set_rent_code_and_hash() {
|
|
// This test can fail due to the encoding changes. In case it becomes too annoying
|
|
// let's rewrite so as we use this module controlled call or we serialize it in runtime.
|
|
let encoded = Encode::encode(&Call::Balances(balances::Call::transfer(CHARLIE, 50)));
|
|
assert_eq!(&encoded[..], &hex!("00000300000000000000C8")[..]);
|
|
|
|
let wasm = wabt::wat2wasm(CODE_SET_RENT).unwrap();
|
|
|
|
with_externalities(
|
|
&mut ExtBuilder::default().existential_deposit(50).build(),
|
|
|| {
|
|
Balances::deposit_creating(&ALICE, 1_000_000);
|
|
assert_ok!(Contract::put_code(Origin::signed(ALICE), 100_000, wasm));
|
|
|
|
// If you ever need to update the wasm source this test will fail
|
|
// and will show you the actual hash.
|
|
assert_eq!(System::events(), vec![
|
|
EventRecord {
|
|
phase: Phase::ApplyExtrinsic(0),
|
|
event: MetaEvent::balances(balances::RawEvent::NewAccount(1, 1_000_000)),
|
|
topics: vec![],
|
|
},
|
|
EventRecord {
|
|
phase: Phase::ApplyExtrinsic(0),
|
|
event: MetaEvent::contract(RawEvent::CodeStored(HASH_SET_RENT.into())),
|
|
topics: vec![],
|
|
},
|
|
]);
|
|
}
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn storage_size() {
|
|
let wasm = wabt::wat2wasm(CODE_SET_RENT).unwrap();
|
|
|
|
// Storage size
|
|
with_externalities(
|
|
&mut ExtBuilder::default().existential_deposit(50).build(),
|
|
|| {
|
|
// Create
|
|
Balances::deposit_creating(&ALICE, 1_000_000);
|
|
assert_ok!(Contract::put_code(Origin::signed(ALICE), 100_000, wasm));
|
|
assert_ok!(Contract::create(
|
|
Origin::signed(ALICE),
|
|
30_000,
|
|
100_000, HASH_SET_RENT.into(),
|
|
<Test as balances::Trait>::Balance::from(1_000u32).encode() // rent allowance
|
|
));
|
|
let bob_contract = ContractInfoOf::<Test>::get(BOB).unwrap().get_alive().unwrap();
|
|
assert_eq!(bob_contract.storage_size, Contract::storage_size_offset() + 4);
|
|
|
|
assert_ok!(Contract::call(Origin::signed(ALICE), BOB, 0, 100_000, call::set_storage_4_byte()));
|
|
let bob_contract = ContractInfoOf::<Test>::get(BOB).unwrap().get_alive().unwrap();
|
|
assert_eq!(bob_contract.storage_size, Contract::storage_size_offset() + 4 + 4);
|
|
|
|
assert_ok!(Contract::call(Origin::signed(ALICE), BOB, 0, 100_000, call::remove_storage_4_byte()));
|
|
let bob_contract = ContractInfoOf::<Test>::get(BOB).unwrap().get_alive().unwrap();
|
|
assert_eq!(bob_contract.storage_size, Contract::storage_size_offset() + 4);
|
|
}
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn deduct_blocks() {
|
|
let wasm = wabt::wat2wasm(CODE_SET_RENT).unwrap();
|
|
|
|
with_externalities(
|
|
&mut ExtBuilder::default().existential_deposit(50).build(),
|
|
|| {
|
|
// Create
|
|
Balances::deposit_creating(&ALICE, 1_000_000);
|
|
assert_ok!(Contract::put_code(Origin::signed(ALICE), 100_000, wasm));
|
|
assert_ok!(Contract::create(
|
|
Origin::signed(ALICE),
|
|
30_000,
|
|
100_000, HASH_SET_RENT.into(),
|
|
<Test as balances::Trait>::Balance::from(1_000u32).encode() // rent allowance
|
|
));
|
|
|
|
// Check creation
|
|
let bob_contract = ContractInfoOf::<Test>::get(BOB).unwrap().get_alive().unwrap();
|
|
assert_eq!(bob_contract.rent_allowance, 1_000);
|
|
|
|
// Advance 4 blocks
|
|
System::initialize(&5, &[0u8; 32].into(), &[0u8; 32].into());
|
|
|
|
// Trigger rent through call
|
|
assert_ok!(Contract::call(Origin::signed(ALICE), BOB, 0, 100_000, call::null()));
|
|
|
|
// Check result
|
|
let rent = (8 + 4 - 3) // storage size = size_offset + deploy_set_storage - deposit_offset
|
|
* 4 // rent byte price
|
|
* 4; // blocks to rent
|
|
let bob_contract = ContractInfoOf::<Test>::get(BOB).unwrap().get_alive().unwrap();
|
|
assert_eq!(bob_contract.rent_allowance, 1_000 - rent);
|
|
assert_eq!(bob_contract.deduct_block, 5);
|
|
assert_eq!(Balances::free_balance(BOB), 30_000 - rent);
|
|
|
|
// Advance 7 blocks more
|
|
System::initialize(&12, &[0u8; 32].into(), &[0u8; 32].into());
|
|
|
|
// Trigger rent through call
|
|
assert_ok!(Contract::call(Origin::signed(ALICE), BOB, 0, 100_000, call::null()));
|
|
|
|
// Check result
|
|
let rent_2 = (8 + 4 - 2) // storage size = size_offset + deploy_set_storage - deposit_offset
|
|
* 4 // rent byte price
|
|
* 7; // blocks to rent
|
|
let bob_contract = ContractInfoOf::<Test>::get(BOB).unwrap().get_alive().unwrap();
|
|
assert_eq!(bob_contract.rent_allowance, 1_000 - rent - rent_2);
|
|
assert_eq!(bob_contract.deduct_block, 12);
|
|
assert_eq!(Balances::free_balance(BOB), 30_000 - rent - rent_2);
|
|
|
|
// Second call on same block should have no effect on rent
|
|
assert_ok!(Contract::call(Origin::signed(ALICE), BOB, 0, 100_000, call::null()));
|
|
|
|
let bob_contract = ContractInfoOf::<Test>::get(BOB).unwrap().get_alive().unwrap();
|
|
assert_eq!(bob_contract.rent_allowance, 1_000 - rent - rent_2);
|
|
assert_eq!(bob_contract.deduct_block, 12);
|
|
assert_eq!(Balances::free_balance(BOB), 30_000 - rent - rent_2);
|
|
}
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn call_contract_removals() {
|
|
removals(|| Contract::call(Origin::signed(ALICE), BOB, 0, 100_000, call::null()).is_ok());
|
|
}
|
|
|
|
#[test]
|
|
fn inherent_claim_surcharge_contract_removals() {
|
|
removals(|| Contract::claim_surcharge(Origin::NONE, BOB, Some(ALICE)).is_ok());
|
|
}
|
|
|
|
#[test]
|
|
fn signed_claim_surcharge_contract_removals() {
|
|
removals(|| Contract::claim_surcharge(Origin::signed(ALICE), BOB, None).is_ok());
|
|
}
|
|
|
|
#[test]
|
|
fn claim_surcharge_malus() {
|
|
// Test surcharge malus for inherent
|
|
claim_surcharge(4, || Contract::claim_surcharge(Origin::NONE, BOB, Some(ALICE)).is_ok(), true);
|
|
claim_surcharge(3, || Contract::claim_surcharge(Origin::NONE, BOB, Some(ALICE)).is_ok(), true);
|
|
claim_surcharge(2, || Contract::claim_surcharge(Origin::NONE, BOB, Some(ALICE)).is_ok(), true);
|
|
claim_surcharge(1, || Contract::claim_surcharge(Origin::NONE, BOB, Some(ALICE)).is_ok(), false);
|
|
|
|
// Test surcharge malus for signed
|
|
claim_surcharge(4, || Contract::claim_surcharge(Origin::signed(ALICE), BOB, None).is_ok(), true);
|
|
claim_surcharge(3, || Contract::claim_surcharge(Origin::signed(ALICE), BOB, None).is_ok(), false);
|
|
claim_surcharge(2, || Contract::claim_surcharge(Origin::signed(ALICE), BOB, None).is_ok(), false);
|
|
claim_surcharge(1, || Contract::claim_surcharge(Origin::signed(ALICE), BOB, None).is_ok(), false);
|
|
}
|
|
|
|
/// Claim surcharge with the given trigger_call at the given blocks.
|
|
/// if removes is true then assert that the contract is a tombstonedead
|
|
fn claim_surcharge(blocks: u64, trigger_call: impl Fn() -> bool, removes: bool) {
|
|
let wasm = wabt::wat2wasm(CODE_SET_RENT).unwrap();
|
|
|
|
with_externalities(
|
|
&mut ExtBuilder::default().existential_deposit(50).build(),
|
|
|| {
|
|
// Create
|
|
Balances::deposit_creating(&ALICE, 1_000_000);
|
|
assert_ok!(Contract::put_code(Origin::signed(ALICE), 100_000, wasm));
|
|
assert_ok!(Contract::create(
|
|
Origin::signed(ALICE),
|
|
100,
|
|
100_000, HASH_SET_RENT.into(),
|
|
<Test as balances::Trait>::Balance::from(1_000u32).encode() // rent allowance
|
|
));
|
|
|
|
// Advance blocks
|
|
System::initialize(&blocks, &[0u8; 32].into(), &[0u8; 32].into());
|
|
|
|
// Trigger rent through call
|
|
assert!(trigger_call());
|
|
|
|
if removes {
|
|
assert!(ContractInfoOf::<Test>::get(BOB).unwrap().get_tombstone().is_some());
|
|
} else {
|
|
assert!(ContractInfoOf::<Test>::get(BOB).unwrap().get_alive().is_some());
|
|
}
|
|
}
|
|
);
|
|
}
|
|
|
|
/// Test for all kind of removals for the given trigger:
|
|
/// * if balance is reached and balance > subsistence threshold
|
|
/// * if allowance is exceeded
|
|
/// * if balance is reached and balance < subsistence threshold
|
|
fn removals(trigger_call: impl Fn() -> bool) {
|
|
let wasm = wabt::wat2wasm(CODE_SET_RENT).unwrap();
|
|
|
|
// Balance reached and superior to subsistence threshold
|
|
with_externalities(
|
|
&mut ExtBuilder::default().existential_deposit(50).build(),
|
|
|| {
|
|
// Create
|
|
Balances::deposit_creating(&ALICE, 1_000_000);
|
|
assert_ok!(Contract::put_code(Origin::signed(ALICE), 100_000, wasm.clone()));
|
|
assert_ok!(Contract::create(
|
|
Origin::signed(ALICE),
|
|
100,
|
|
100_000, HASH_SET_RENT.into(),
|
|
<Test as balances::Trait>::Balance::from(1_000u32).encode() // rent allowance
|
|
));
|
|
|
|
// Trigger rent must have no effect
|
|
assert!(trigger_call());
|
|
assert_eq!(ContractInfoOf::<Test>::get(BOB).unwrap().get_alive().unwrap().rent_allowance, 1_000);
|
|
|
|
// Advance blocks
|
|
System::initialize(&10, &[0u8; 32].into(), &[0u8; 32].into());
|
|
|
|
// Trigger rent through call
|
|
assert!(trigger_call());
|
|
assert!(ContractInfoOf::<Test>::get(BOB).unwrap().get_tombstone().is_some());
|
|
|
|
// Advance blocks
|
|
System::initialize(&20, &[0u8; 32].into(), &[0u8; 32].into());
|
|
|
|
// Trigger rent must have no effect
|
|
assert!(trigger_call());
|
|
assert!(ContractInfoOf::<Test>::get(BOB).unwrap().get_tombstone().is_some());
|
|
}
|
|
);
|
|
|
|
// Allowance exceeded
|
|
with_externalities(
|
|
&mut ExtBuilder::default().existential_deposit(50).build(),
|
|
|| {
|
|
// Create
|
|
Balances::deposit_creating(&ALICE, 1_000_000);
|
|
assert_ok!(Contract::put_code(Origin::signed(ALICE), 100_000, wasm.clone()));
|
|
assert_ok!(Contract::create(
|
|
Origin::signed(ALICE),
|
|
1_000,
|
|
100_000, HASH_SET_RENT.into(),
|
|
<Test as balances::Trait>::Balance::from(100u32).encode() // rent allowance
|
|
));
|
|
|
|
// Trigger rent must have no effect
|
|
assert!(trigger_call());
|
|
assert_eq!(ContractInfoOf::<Test>::get(BOB).unwrap().get_alive().unwrap().rent_allowance, 100);
|
|
|
|
// Advance blocks
|
|
System::initialize(&10, &[0u8; 32].into(), &[0u8; 32].into());
|
|
|
|
// Trigger rent through call
|
|
assert!(trigger_call());
|
|
assert!(ContractInfoOf::<Test>::get(BOB).unwrap().get_tombstone().is_some());
|
|
|
|
// Advance blocks
|
|
System::initialize(&20, &[0u8; 32].into(), &[0u8; 32].into());
|
|
|
|
// Trigger rent must have no effect
|
|
assert!(trigger_call());
|
|
assert!(ContractInfoOf::<Test>::get(BOB).unwrap().get_tombstone().is_some());
|
|
}
|
|
);
|
|
|
|
// Balance reached and inferior to subsistence threshold
|
|
with_externalities(
|
|
&mut ExtBuilder::default().existential_deposit(50).build(),
|
|
|| {
|
|
// Create
|
|
Balances::deposit_creating(&ALICE, 1_000_000);
|
|
assert_ok!(Contract::put_code(Origin::signed(ALICE), 100_000, wasm.clone()));
|
|
assert_ok!(Contract::create(
|
|
Origin::signed(ALICE),
|
|
50+Balances::minimum_balance(),
|
|
100_000, HASH_SET_RENT.into(),
|
|
<Test as balances::Trait>::Balance::from(1_000u32).encode() // rent allowance
|
|
));
|
|
|
|
// Trigger rent must have no effect
|
|
assert!(trigger_call());
|
|
assert_eq!(ContractInfoOf::<Test>::get(BOB).unwrap().get_alive().unwrap().rent_allowance, 1_000);
|
|
|
|
// Transfer funds
|
|
assert_ok!(Contract::call(Origin::signed(ALICE), BOB, 0, 100_000, call::transfer()));
|
|
assert_eq!(ContractInfoOf::<Test>::get(BOB).unwrap().get_alive().unwrap().rent_allowance, 1_000);
|
|
|
|
// Advance blocks
|
|
System::initialize(&10, &[0u8; 32].into(), &[0u8; 32].into());
|
|
|
|
// Trigger rent through call
|
|
assert!(trigger_call());
|
|
assert!(ContractInfoOf::<Test>::get(BOB).is_none());
|
|
|
|
// Advance blocks
|
|
System::initialize(&20, &[0u8; 32].into(), &[0u8; 32].into());
|
|
|
|
// Trigger rent must have no effect
|
|
assert!(trigger_call());
|
|
assert!(ContractInfoOf::<Test>::get(BOB).is_none());
|
|
}
|
|
);
|
|
}
|
|
|
|
const CODE_CHECK_DEFAULT_RENT_ALLOWANCE: &str = r#"
|
|
(module
|
|
(import "env" "ext_rent_allowance" (func $ext_rent_allowance))
|
|
(import "env" "ext_scratch_size" (func $ext_scratch_size (result i32)))
|
|
(import "env" "ext_scratch_copy" (func $ext_scratch_copy (param i32 i32 i32)))
|
|
(import "env" "memory" (memory 1 1))
|
|
|
|
(func $assert (param i32)
|
|
(block $ok
|
|
(br_if $ok
|
|
(get_local 0)
|
|
)
|
|
(unreachable)
|
|
)
|
|
)
|
|
|
|
(func (export "call"))
|
|
|
|
(func (export "deploy")
|
|
;; fill the scratch buffer with the rent allowance.
|
|
(call $ext_rent_allowance)
|
|
|
|
;; assert $ext_scratch_size == 8
|
|
(call $assert
|
|
(i32.eq
|
|
(call $ext_scratch_size)
|
|
(i32.const 8)
|
|
)
|
|
)
|
|
|
|
;; copy contents of the scratch buffer into the contract's memory.
|
|
(call $ext_scratch_copy
|
|
(i32.const 8) ;; Pointer in memory to the place where to copy.
|
|
(i32.const 0) ;; Offset from the start of the scratch buffer.
|
|
(i32.const 8) ;; Count of bytes to copy.
|
|
)
|
|
|
|
;; assert that contents of the buffer is equal to <BalanceOf<T>>::max_value().
|
|
(call $assert
|
|
(i64.eq
|
|
(i64.load
|
|
(i32.const 8)
|
|
)
|
|
(i64.const 0xFFFFFFFFFFFFFFFF)
|
|
)
|
|
)
|
|
)
|
|
)
|
|
"#;
|
|
const HASH_CHECK_DEFAULT_RENT_ALLOWANCE: [u8; 32] = hex!("4f9ec2b94eea522cfff10b77ef4056c631045c00978a457d283950521ecf07b6");
|
|
|
|
#[test]
|
|
fn default_rent_allowance_on_create() {
|
|
let wasm = wabt::wat2wasm(CODE_CHECK_DEFAULT_RENT_ALLOWANCE).unwrap();
|
|
|
|
with_externalities(
|
|
&mut ExtBuilder::default().existential_deposit(50).build(),
|
|
|| {
|
|
// Create
|
|
Balances::deposit_creating(&ALICE, 1_000_000);
|
|
assert_ok!(Contract::put_code(Origin::signed(ALICE), 100_000, wasm));
|
|
assert_ok!(Contract::create(
|
|
Origin::signed(ALICE),
|
|
30_000,
|
|
100_000,
|
|
HASH_CHECK_DEFAULT_RENT_ALLOWANCE.into(),
|
|
vec![],
|
|
));
|
|
|
|
// Check creation
|
|
let bob_contract = ContractInfoOf::<Test>::get(BOB).unwrap().get_alive().unwrap();
|
|
assert_eq!(bob_contract.rent_allowance, <BalanceOf<Test>>::max_value());
|
|
|
|
// Advance blocks
|
|
System::initialize(&5, &[0u8; 32].into(), &[0u8; 32].into());
|
|
|
|
// Trigger rent through call
|
|
assert_ok!(Contract::call(Origin::signed(ALICE), BOB, 0, 100_000, call::null()));
|
|
|
|
// Check contract is still alive
|
|
let bob_contract = ContractInfoOf::<Test>::get(BOB).unwrap().get_alive();
|
|
assert!(bob_contract.is_some())
|
|
}
|
|
);
|
|
}
|
|
|
|
const CODE_RESTORATION: &str = r#"
|
|
(module
|
|
(import "env" "ext_set_storage" (func $ext_set_storage (param i32 i32 i32 i32)))
|
|
(import "env" "ext_dispatch_call" (func $ext_dispatch_call (param i32 i32)))
|
|
(import "env" "memory" (memory 1 1))
|
|
|
|
(func (export "call")
|
|
(call $ext_dispatch_call
|
|
(i32.const 200) ;; Pointer to the start of encoded call buffer
|
|
(i32.const 115) ;; Length of the buffer
|
|
)
|
|
)
|
|
(func (export "deploy")
|
|
;; Data to restore
|
|
(call $ext_set_storage
|
|
(i32.const 0)
|
|
(i32.const 1)
|
|
(i32.const 0)
|
|
(i32.const 4)
|
|
)
|
|
|
|
;; ACL
|
|
(call $ext_set_storage
|
|
(i32.const 100)
|
|
(i32.const 1)
|
|
(i32.const 0)
|
|
(i32.const 4)
|
|
)
|
|
)
|
|
|
|
;; Data to restore
|
|
(data (i32.const 0) "\28")
|
|
|
|
;; ACL
|
|
(data (i32.const 100) "\01")
|
|
|
|
;; Call
|
|
(data (i32.const 200) "\01\05\02\00\00\00\00\00\00\00\21\d6\b1\d5\9a\a6\03\8f\ca\d6\32\48\8e\90"
|
|
"\26\89\3a\1b\bb\48\58\17\74\c7\71\b8\f2\43\20\69\7f\05\32\00\00\00\00\00\00\00\08\01\00\00"
|
|
"\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\01"
|
|
"\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00"
|
|
"\00"
|
|
)
|
|
)
|
|
"#;
|
|
const HASH_RESTORATION: [u8; 32] = hex!("b393bfa8de97b02f08ba1580b46100a80c9489a97c8d870691c9ff7236b29bc7");
|
|
|
|
#[test]
|
|
fn restorations_dirty_storage_and_different_storage() {
|
|
restoration(true, true);
|
|
}
|
|
|
|
#[test]
|
|
fn restorations_dirty_storage() {
|
|
restoration(false, true);
|
|
}
|
|
|
|
#[test]
|
|
fn restoration_different_storage() {
|
|
restoration(true, false);
|
|
}
|
|
|
|
#[test]
|
|
fn restoration_success() {
|
|
restoration(false, false);
|
|
}
|
|
|
|
fn restoration(test_different_storage: bool, test_restore_to_with_dirty_storage: bool) {
|
|
let acl_key = {
|
|
let mut s = [0u8; 32];
|
|
s[0] = 1;
|
|
s
|
|
};
|
|
|
|
// This test can fail due to the encoding changes. In case it becomes too annoying
|
|
// let's rewrite so as we use this module controlled call or we serialize it in runtime.
|
|
let encoded = hex::encode(Encode::encode(&Call::Contract(super::Call::restore_to(
|
|
BOB,
|
|
HASH_SET_RENT.into(),
|
|
<Test as balances::Trait>::Balance::from(50u32),
|
|
vec![acl_key, acl_key],
|
|
))));
|
|
|
|
let literal = "0105020000000000000021d6b1d59aa6038fcad632488e9026893a1bbb48581774c771b8f243206\
|
|
97f053200000000000000080100000000000000000000000000000000000000000000000000000000000000010\
|
|
0000000000000000000000000000000000000000000000000000000000000";
|
|
|
|
assert_eq!(encoded, literal);
|
|
assert_eq!(115, hex::decode(literal).unwrap().len());
|
|
|
|
let restoration_wasm = wabt::wat2wasm(CODE_RESTORATION).unwrap();
|
|
let set_rent_wasm = wabt::wat2wasm(CODE_SET_RENT).unwrap();
|
|
|
|
with_externalities(
|
|
&mut ExtBuilder::default().existential_deposit(50).build(),
|
|
|| {
|
|
Balances::deposit_creating(&ALICE, 1_000_000);
|
|
assert_ok!(Contract::put_code(Origin::signed(ALICE), 100_000, restoration_wasm));
|
|
assert_ok!(Contract::put_code(Origin::signed(ALICE), 100_000, set_rent_wasm));
|
|
|
|
// If you ever need to update the wasm source this test will fail
|
|
// and will show you the actual hash.
|
|
assert_eq!(System::events(), vec![
|
|
EventRecord {
|
|
phase: Phase::ApplyExtrinsic(0),
|
|
event: MetaEvent::balances(balances::RawEvent::NewAccount(1, 1_000_000)),
|
|
topics: vec![],
|
|
},
|
|
EventRecord {
|
|
phase: Phase::ApplyExtrinsic(0),
|
|
event: MetaEvent::contract(RawEvent::CodeStored(HASH_RESTORATION.into())),
|
|
topics: vec![],
|
|
},
|
|
EventRecord {
|
|
phase: Phase::ApplyExtrinsic(0),
|
|
event: MetaEvent::contract(RawEvent::CodeStored(HASH_SET_RENT.into())),
|
|
topics: vec![],
|
|
},
|
|
]);
|
|
|
|
assert_ok!(Contract::create(
|
|
Origin::signed(ALICE),
|
|
30_000,
|
|
100_000, HASH_SET_RENT.into(),
|
|
<Test as balances::Trait>::Balance::from(0u32).encode()
|
|
));
|
|
|
|
// Check creation
|
|
let bob_contract = ContractInfoOf::<Test>::get(BOB).unwrap().get_alive().unwrap();
|
|
assert_eq!(bob_contract.rent_allowance, 0);
|
|
|
|
if test_different_storage {
|
|
assert_ok!(Contract::call(
|
|
Origin::signed(ALICE),
|
|
BOB, 0, 100_000,
|
|
call::set_storage_4_byte())
|
|
);
|
|
}
|
|
|
|
// Advance 4 blocks
|
|
System::initialize(&5, &[0u8; 32].into(), &[0u8; 32].into());
|
|
|
|
// Trigger rent through call
|
|
assert_ok!(Contract::call(Origin::signed(ALICE), BOB, 0, 100_000, call::null()));
|
|
assert!(ContractInfoOf::<Test>::get(BOB).unwrap().get_tombstone().is_some());
|
|
|
|
Balances::deposit_creating(&CHARLIE, 1_000_000);
|
|
assert_ok!(Contract::create(
|
|
Origin::signed(CHARLIE),
|
|
30_000,
|
|
100_000, HASH_RESTORATION.into(),
|
|
<Test as balances::Trait>::Balance::from(0u32).encode()
|
|
));
|
|
|
|
let django_trie_id = ContractInfoOf::<Test>::get(DJANGO).unwrap()
|
|
.get_alive().unwrap().trie_id;
|
|
|
|
if !test_restore_to_with_dirty_storage {
|
|
// Advance 1 blocks
|
|
System::initialize(&6, &[0u8; 32].into(), &[0u8; 32].into());
|
|
}
|
|
|
|
assert_ok!(Contract::call(
|
|
Origin::signed(ALICE),
|
|
DJANGO, 0, 100_000,
|
|
vec![],
|
|
));
|
|
|
|
if test_different_storage || test_restore_to_with_dirty_storage {
|
|
assert!(ContractInfoOf::<Test>::get(BOB).unwrap().get_tombstone().is_some());
|
|
let django_contract = ContractInfoOf::<Test>::get(DJANGO).unwrap()
|
|
.get_alive().unwrap();
|
|
assert_eq!(django_contract.storage_size, 16);
|
|
assert_eq!(django_contract.trie_id, django_trie_id);
|
|
assert_eq!(django_contract.deduct_block, System::block_number());
|
|
} else {
|
|
let bob_contract = ContractInfoOf::<Test>::get(BOB).unwrap()
|
|
.get_alive().unwrap();
|
|
assert_eq!(bob_contract.rent_allowance, 50);
|
|
assert_eq!(bob_contract.storage_size, 12);
|
|
assert_eq!(bob_contract.trie_id, django_trie_id);
|
|
assert_eq!(bob_contract.deduct_block, System::block_number());
|
|
assert!(ContractInfoOf::<Test>::get(DJANGO).is_none());
|
|
}
|
|
}
|
|
);
|
|
}
|