sdk-monorepo/test/web.test.ts

import chai from 'chai'

import { TorHttpClient, RegularHttpClient, TorProvider, Relayer } from '@tornado/sdk-web'

// Waffle matchers
import { solidity } from 'ethereum-waffle'
import { ErrorUtils } from '@tornado/sdk-utils'
import { parseUnits } from 'ethers/lib/utils'
import { Web3Provider } from '@ethersproject/providers'

chai.use(solidity)

const expect = chai.expect

describe('web', () => {
  const torify = process.env.TORIFY === 'true'

  if (!process.env.ETH_MAINNET_TEST_RPC || !process.env.TOR_PORT)
    throw ErrorUtils.getError('need a tor port and mainnet rpc endpoint.')

  let torProvider: Web3Provider

  if (torify) torProvider = new TorProvider(process.env.ETH_MAINNET_TEST_RPC, { port: +process.env.TOR_PORT })

  const httpClient = torify ? new TorHttpClient({ port: +process.env.TOR_PORT }) : new RegularHttpClient()

  if (torify)
    console.log(
      '\nSome Tor tips: Support non-profit exit node operators, host your own nodes, avoid spy nodes by configuring torrc.\n'
    )

  function torErrorThrow(err: Error) {
    err.message =
      "\n\nThis test most likely failed because you (Tor) didn't open a SOCKS5 tunnel at either 9050 or the Tor port you specified in .env. As such, the provider couldn't send a request. Please start Tor or Tor Browser. 🧅\n\n"
    throw err
  }

  it('Relayer: should be able to initialize a Relayer and fetch properties', async () => {
    if (!process.env.TEST_RELAYER_DOMAIN)
      throw ErrorUtils.getError('web.test.ts: this test requires a relayer domain name.')

    const relayer = new Relayer({
      url: 'https://' + process.env.TEST_RELAYER_DOMAIN,
      httpClient: httpClient
    })

    console.log(await relayer.fetchProperties())
  }).timeout(0)

  it('httpClient: Should be able to send requests over Tor', async function () {
    try {
      const check = (await httpClient.get('https://check.torproject.org/api/ip')).data
      expect(check.IsTor).to.be.true
      console.log(
        `\n🧅 check.torproject.org/api/ip says...\n\nWe are using Tor: ${check.IsTor ? '✅' : '❌'}`
      )
      console.log(`Our IP is: ${check.IP}\n`)
    } catch (err) {
      torErrorThrow(ErrorUtils.ensureError(err))
    }
  }).timeout(0)

  it('TorProvider: Should be able to fetch some basic blockchain data over Tor', async () => {
    try {
      console.log('\nBlock Number: ' + (await torProvider.getBlockNumber()))
      console.log('Gas Price: ' + (await torProvider.getGasPrice()).div(1000000000) + ' gwei')
      console.log(
        'Zero address ETH burned: ' +
          (await torProvider.getBalance('0x0000000000000000000000000000000000000000')).div(parseUnits('1')) +
          '\n'
      )
    } catch (err) {
      torErrorThrow(ErrorUtils.ensureError(err))
    }
  }).timeout(0)

  it('DISCONNECTED: Should not be able to request over Tor', async function () {
    try {
      await torProvider.getBlockNumber()
      throw ErrorUtils.getError('should not have succeeded.')
    } catch (err) {}
  }).timeout(0)
})