`eebc5b6784eb`

source

tests/src/eth/util/helpers.ts6.7 KiBsource history
1//2// This file is subject to the terms and conditions defined in3// file 'LICENSE', which is part of this source code package.4//56// eslint-disable-next-line @typescript-eslint/triple-slash-reference7/// <reference path="helpers.d.ts" />89import { ApiPromise } from '@polkadot/api';10import { addressToEvm, evmToAddress } from '@polkadot/util-crypto';11import Web3 from 'web3';12import usingApi, { submitTransactionAsync } from '../../substrate/substrate-api';13import { IKeyringPair } from '@polkadot/types/types';14import { expect } from 'chai';15import { getGenericResult } from '../../util/helpers';16import * as solc from 'solc';17import config from '../../config';18import privateKey from '../../substrate/privateKey';19import contractHelpersAbi from './contractHelpersAbi.json';2021export const GAS_ARGS = { gas: 0x1000000, gasPrice: '0x01' };2223let web3Connected = false;24export async function usingWeb3<T>(cb: (web3: Web3) => Promise<T> | T): Promise<T> {25  if (web3Connected) throw new Error('do not nest usingWeb3 calls');26  web3Connected = true;2728  const provider = new Web3.providers.WebsocketProvider(config.substrateUrl);29  const web3 = new Web3(provider);3031  try {32    return await cb(web3);33  } finally {34    // provider.disconnect(3000, 'normal disconnect');35    provider.connection.close();36    web3Connected = false;37  }38}3940type Web3HttpMarker = {web3Http: true};4142export async function usingWeb3Http<T>(cb: (web3: Web3 & Web3HttpMarker) => Promise<T> | T): Promise<T> {43  const provider = new Web3.providers.HttpProvider(config.frontierUrl);44  const web3: Web3 & Web3HttpMarker = new Web3(provider) as any;45  web3.web3Http = true;4647  return await cb(web3);48}4950export function collectionIdToAddress(address: number): string {51  if (address >= 0xffffffff || address < 0) throw new Error('id overflow');52  const buf = Buffer.from([0x17, 0xc4, 0xe6, 0x45, 0x3c, 0xc4, 0x9a, 0xaa, 0xae, 0xac, 0xa8, 0x94, 0xe6, 0xd9, 0x68, 0x3e,53    address >> 24,54    (address >> 16) & 0xff,55    (address >> 8) & 0xff,56    address & 0xff,57  ]);58  return Web3.utils.toChecksumAddress('0x' + buf.toString('hex'));59}6061export function createEthAccount(web3: Web3) {62  const account = web3.eth.accounts.create();63  web3.eth.accounts.wallet.add(account.privateKey);64  return account.address;65}6667export async function createEthAccountWithBalance(api: ApiPromise, web3: Web3) {68  const alice = privateKey('//Alice');69  const account = createEthAccount(web3);70  await transferBalanceToEth(api, alice, account);7172  return account;73}7475export async function transferBalanceToEth(api: ApiPromise, source: IKeyringPair, target: string, amount = 999999999999999) {76  const tx = api.tx.balances.transfer(evmToAddress(target), amount);77  const events = await submitTransactionAsync(source, tx);78  const result = getGenericResult(events);79  expect(result.success).to.be.true;80}8182export async function itWeb3(name: string, cb: (apis: { web3: Web3, api: ApiPromise }) => any, opts: { only?: boolean, skip?: boolean } = {}) {83  let i: any = it;84  if (opts.only) i = i.only;85  else if (opts.skip) i = i.skip;86  i(name, async () => {87    await usingApi(async api => {88      await usingWeb3(async web3 => {89        await cb({ api, web3 });90      });91    });92  });93}94itWeb3.only = (name: string, cb: (apis: { web3: Web3, api: ApiPromise }) => any) => itWeb3(name, cb, { only: true });95itWeb3.skip = (name: string, cb: (apis: { web3: Web3, api: ApiPromise }) => any) => itWeb3(name, cb, { skip: true });9697export async function generateSubstrateEthPair(web3: Web3) {98  const account = web3.eth.accounts.create();99  evmToAddress(account.address);100}101102type NormalizedEvent = {103    address: string,104    event: string,105    args: { [key: string]: string }106};107108export function normalizeEvents(events: any): NormalizedEvent[] {109  const output = [];110  for (const key of Object.keys(events)) {111    if (key.match(/^[0-9]+$/)) {112      output.push(events[key]);113    } else if (Array.isArray(events[key])) {114      output.push(...events[key]);115    } else {116      output.push(events[key]);117    }118  }119  output.sort((a, b) => a.logIndex - b.logIndex);120  return output.map(({ address, event, returnValues }) => {121    const args: { [key: string]: string } = {};122    for (const key of Object.keys(returnValues)) {123      if (!key.match(/^[0-9]+$/)) {124        args[key] = returnValues[key];125      }126    }127    return {128      address,129      event,130      args,131    };132  });133}134135export async function recordEvents(contract: any, action: () => Promise<void>): Promise<NormalizedEvent[]> {136  const out: any = [];137  contract.events.allEvents((_: any, event: any) => {138    out.push(event);139  });140  await action();141  return normalizeEvents(out);142}143144export function subToEth(eth: string): string {145  const bytes = addressToEvm(eth);146  const string = '0x' + Buffer.from(bytes).toString('hex');147  return Web3.utils.toChecksumAddress(string);148}149150export function compileContract(name: string, src: string) {151  const out = JSON.parse(solc.compile(JSON.stringify({152    language: 'Solidity',153    sources: {154      [`${name}.sol`]: {155        content: `156          // SPDX-License-Identifier: UNLICENSED157          pragma solidity ^0.8.6;158159          ${src}160        `,161      },162    },163    settings: {164      outputSelection: {165        '*': {166          '*': ['*'],167        },168      },169    },170  }))).contracts[`${name}.sol`][name];171172  return {173    abi: out.abi,174    object: '0x' + out.evm.bytecode.object,175  };176}177178export async function deployFlipper(web3: Web3 & Web3HttpMarker, deployer: string) {179  const compiled = compileContract('Flipper', `180    contract Flipper {181      bool value = false;182      function flip() public {183        value = !value;184      }185      function getValue() public view returns (bool) {186        return value;187      }188    }189  `);190  const Flipper = new web3.eth.Contract(compiled.abi, undefined, {191    data: compiled.object,192    from: deployer,193    ...GAS_ARGS,194  });195  const flipper = await Flipper.deploy({ data: compiled.object }).send({from: deployer});196197  return flipper;198}199200export async function deployCollector(web3: Web3 & Web3HttpMarker, deployer: string) {201  const compiled = compileContract('Collector', `202    contract Collector {203      uint256 collected;204      function giveMoney() public payable {205        collected += msg.value;206      }207      function getCollected() public view returns (uint256) {208        return collected;209      }210    }211  `);212  const Collector = new web3.eth.Contract(compiled.abi, undefined, {213    data: compiled.object,214    from: deployer,215    ...GAS_ARGS,216  });217  const collector = await Collector.deploy({ data: compiled.object }).send({ from: deployer });218219  return collector;220}221222export function contractHelpers(web3: Web3, caller: string) {223  return new web3.eth.Contract(contractHelpersAbi as any, '0x842899ECF380553E8a4de75bF534cdf6fBF64049', {from: caller, ...GAS_ARGS});224}