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tests/src/eth/util/helpers.ts10.9 KiBsource history
1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617// eslint-disable-next-line @typescript-eslint/triple-slash-reference18/// <reference path="helpers.d.ts" />1920import {ApiPromise} from '@polkadot/api';21import {addressToEvm, evmToAddress} from '@polkadot/util-crypto';22import Web3 from 'web3';23import usingApi, {submitTransactionAsync} from '../../substrate/substrate-api';24import {IKeyringPair} from '@polkadot/types/types';25import {expect} from 'chai';26import {CrossAccountId, getGenericResult, UNIQUE} from '../../util/helpers';27import * as solc from 'solc';28import config from '../../config';29import privateKey from '../../substrate/privateKey';30import contractHelpersAbi from './contractHelpersAbi.json';31import collectionAbi from '../collectionAbi.json';32import getBalance from '../../substrate/get-balance';33import waitNewBlocks from '../../substrate/wait-new-blocks';3435export const GAS_ARGS = {gas: 2500000};3637export enum SponsoringMode {38  Disabled = 0,39  Allowlisted = 1,40  Generous = 2,41}4243let web3Connected = false;44export async function usingWeb3<T>(cb: (web3: Web3) => Promise<T> | T): Promise<T> {45  if (web3Connected) throw new Error('do not nest usingWeb3 calls');46  web3Connected = true;4748  const provider = new Web3.providers.WebsocketProvider(config.substrateUrl);49  const web3 = new Web3(provider);5051  try {52    return await cb(web3);53  } finally {54    // provider.disconnect(3000, 'normal disconnect');55    provider.connection.close();56    web3Connected = false;57  }58}5960function encodeIntBE(v: number): number[] {61  if (v >= 0xffffffff || v < 0) throw new Error('id overflow');62  return [63    v >> 24,64    (v >> 16) & 0xff,65    (v >> 8) & 0xff,66    v & 0xff,67  ];68}6970export function collectionIdToAddress(collection: number): string {71  const buf = Buffer.from([0x17, 0xc4, 0xe6, 0x45, 0x3c, 0xc4, 0x9a, 0xaa, 0xae, 0xac, 0xa8, 0x94, 0xe6, 0xd9, 0x68, 0x3e,72    ...encodeIntBE(collection),73  ]);74  return Web3.utils.toChecksumAddress('0x' + buf.toString('hex'));75}76export function collectionIdFromAddress(address: string): number {77  if (!address.startsWith('0x'))78    throw 'address not starts with "0x"';79  if (address.length > 42)80    throw 'address length is more than 20 bytes';81    return Number('0x' + address.substring(address.length - 8));82}83  84export function normalizeAddress(address: string): string {85  return '0x' + address.substring(address.length - 40);86}8788export function tokenIdToAddress(collection: number, token: number): string {89  const buf = Buffer.from([0xf8, 0x23, 0x8c, 0xcf, 0xff, 0x8e, 0xd8, 0x87, 0x46, 0x3f, 0xd5, 0xe0,90    ...encodeIntBE(collection),91    ...encodeIntBE(token),92  ]);93  return Web3.utils.toChecksumAddress('0x' + buf.toString('hex'));94}95export function tokenIdToCross(collection: number, token: number): CrossAccountId {96  return {97    Ethereum: tokenIdToAddress(collection, token),98  };99100export function createEthAccount(web3: Web3) {101  const account = web3.eth.accounts.create();102  web3.eth.accounts.wallet.add(account.privateKey);103  return account.address;104}105106export async function createEthAccountWithBalance(api: ApiPromise, web3: Web3) {107  const alice = privateKey('//Alice');108  const account = createEthAccount(web3);109  await transferBalanceToEth(api, alice, account);110111  return account;112}113114export async function transferBalanceToEth(api: ApiPromise, source: IKeyringPair, target: string, amount = 1000n * UNIQUE) {115  const tx = api.tx.balances.transfer(evmToAddress(target), amount);116  const events = await submitTransactionAsync(source, tx);117  const result = getGenericResult(events);118  expect(result.success).to.be.true;119}120121export async function itWeb3(name: string, cb: (apis: { web3: Web3, api: ApiPromise }) => any, opts: { only?: boolean, skip?: boolean } = {}) {122  let i: any = it;123  if (opts.only) i = i.only;124  else if (opts.skip) i = i.skip;125  i(name, async () => {126    await usingApi(async api => {127      await usingWeb3(async web3 => {128        await cb({api, web3});129      });130    });131  });132}133itWeb3.only = (name: string, cb: (apis: { web3: Web3, api: ApiPromise }) => any) => itWeb3(name, cb, {only: true});134itWeb3.skip = (name: string, cb: (apis: { web3: Web3, api: ApiPromise }) => any) => itWeb3(name, cb, {skip: true});135136export async function generateSubstrateEthPair(web3: Web3) {137  const account = web3.eth.accounts.create();138  evmToAddress(account.address);139}140141type NormalizedEvent = {142    address: string,143    event: string,144    args: { [key: string]: string }145};146147export function normalizeEvents(events: any): NormalizedEvent[] {148  const output = [];149  for (const key of Object.keys(events)) {150    if (key.match(/^[0-9]+$/)) {151      output.push(events[key]);152    } else if (Array.isArray(events[key])) {153      output.push(...events[key]);154    } else {155      output.push(events[key]);156    }157  }158  output.sort((a, b) => a.logIndex - b.logIndex);159  return output.map(({address, event, returnValues}) => {160    const args: { [key: string]: string } = {};161    for (const key of Object.keys(returnValues)) {162      if (!key.match(/^[0-9]+$/)) {163        args[key] = returnValues[key];164      }165    }166    return {167      address,168      event,169      args,170    };171  });172}173174export async function recordEvents(contract: any, action: () => Promise<void>): Promise<NormalizedEvent[]> {175  const out: any = [];176  contract.events.allEvents((_: any, event: any) => {177    out.push(event);178  });179  await action();180  return normalizeEvents(out);181}182183export function subToEthLowercase(eth: string): string {184  const bytes = addressToEvm(eth);185  return '0x' + Buffer.from(bytes).toString('hex');186}187188export function subToEth(eth: string): string {189  return Web3.utils.toChecksumAddress(subToEthLowercase(eth));190}191192export function compileContract(name: string, src: string) {193  const out = JSON.parse(solc.compile(JSON.stringify({194    language: 'Solidity',195    sources: {196      [`${name}.sol`]: {197        content: `198          // SPDX-License-Identifier: UNLICENSED199          pragma solidity ^0.8.6;200201          ${src}202        `,203      },204    },205    settings: {206      outputSelection: {207        '*': {208          '*': ['*'],209        },210      },211    },212  }))).contracts[`${name}.sol`][name];213214  return {215    abi: out.abi,216    object: '0x' + out.evm.bytecode.object,217  };218}219220export async function deployFlipper(web3: Web3, deployer: string) {221  const compiled = compileContract('Flipper', `222    contract Flipper {223      bool value = false;224      function flip() public {225        value = !value;226      }227      function getValue() public view returns (bool) {228        return value;229      }230    }231  `);232  const flipperContract = new web3.eth.Contract(compiled.abi, undefined, {233    data: compiled.object,234    from: deployer,235    ...GAS_ARGS,236  });237  const flipper = await flipperContract.deploy({data: compiled.object}).send({from: deployer});238239  return flipper;240}241242export async function deployCollector(web3: Web3, deployer: string) {243  const compiled = compileContract('Collector', `244    contract Collector {245      uint256 collected;246      fallback() external payable {247        giveMoney();248      }249      function giveMoney() public payable {250        collected += msg.value;251      }252      function getCollected() public view returns (uint256) {253        return collected;254      }255      function getUnaccounted() public view returns (uint256) {256        return address(this).balance - collected;257      }258259      function withdraw(address payable target) public {260        target.transfer(collected);261        collected = 0;262      }263    }264  `);265  const collectorContract = new web3.eth.Contract(compiled.abi, undefined, {266    data: compiled.object,267    from: deployer,268    ...GAS_ARGS,269  });270  const collector = await collectorContract.deploy({data: compiled.object}).send({from: deployer});271272  return collector;273}274275/** 276 * pallet evm_contract_helpers277 * @param web3 278 * @param caller - eth address279 * @returns 280 */281export function contractHelpers(web3: Web3, caller: string) {282  return new web3.eth.Contract(contractHelpersAbi as any, '0x842899ECF380553E8a4de75bF534cdf6fBF64049', {from: caller, ...GAS_ARGS});283}284285/** 286 * pallet evm_collection287 * @param web3 288 * @param caller - eth address289 * @returns 290 */291export function collectionHelper(web3: Web3, caller: string) {292  return new web3.eth.Contract(collectionAbi as any, '0x6c4e9fe1ae37a41e93cee429e8e1881abdcbb54f', {from: caller, ...GAS_ARGS});293}294295/**296 * Execute ethereum method call using substrate account297 * @param to target contract298 * @param mkTx - closure, receiving `contract.methods`, and returning method call,299 * to be used as following (assuming `to` = erc20 contract):300 * `m => m.transfer(to, amount)`301 *302 * # Example303 * ```ts304 * executeEthTxOnSub(api, alice, erc20Contract, m => m.transfer(target, amount));305 * ```306 */307export async function executeEthTxOnSub(web3: Web3, api: ApiPromise, from: IKeyringPair, to: any, mkTx: (methods: any) => any, {value = 0}: {value?: bigint | number} = { }) {308  const tx = api.tx.evm.call(309    subToEth(from.address),310    to.options.address,311    mkTx(to.methods).encodeABI(),312    value,313    GAS_ARGS.gas,314    await web3.eth.getGasPrice(),315    null,316    null,317    [],318  );319  const events = await submitTransactionAsync(from, tx);320  expect(events.some(({event: {section, method}}) => section == 'evm' && method == 'Executed')).to.be.true;321}322323export async function ethBalanceViaSub(api: ApiPromise, address: string): Promise<bigint> {324  return (await getBalance(api, [evmToAddress(address)]))[0];325}326327/**328 * Measure how much gas given closure consumes329 *330 * @param user which user balance will be checked331 */332export async function recordEthFee(api: ApiPromise, user: string, call: () => Promise<any>): Promise<bigint> {333  const before = await ethBalanceViaSub(api, user);334335  await call();336337  // In dev mode, the transaction might not finish processing in time338  await waitNewBlocks(api, 1);339  const after = await ethBalanceViaSub(api, user);340341  // Can't use .to.be.less, because chai doesn't supports bigint342  expect(after < before).to.be.true;343344  return before - after;345}346347type ElementOf<A> = A extends readonly (infer T)[] ? T : never;348// I want a fancier api, not a memory efficiency349export function* cartesian<T extends Array<Array<any>>, R extends Array<any>>(internalRest: [...R], ...args: [...T]): Generator<[...R, ...{[K in keyof T]: ElementOf<T[K]>}]> {350  if(args.length === 0) {351    yield internalRest as any;352    return;353  }354  for(const value of args[0]) {355    yield* cartesian([...internalRest, value], ...args.slice(1)) as any;356  }357}