template.90_advance_epoch.js

/* eslint-disable require-jsdoc */
import fs from 'fs';
import os from 'os';
import path from 'path';
import Web3 from 'web3';
import Enigma from '../../src/Enigma';
import * as eeConstants from '../../src/emitterConstants';
import {EnigmaContract, EnigmaTokenContract, SampleContract} from './contractLoader';
import * as constants from './testConstants';


function sleep(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}

describe('Init tests', () => {
  let accounts;
  let web3;
  let enigma;
  let sampleContract;
  let epochSize;
  it('initializes', () => {
    const provider = new Web3.providers.HttpProvider('http://localhost:9545');
    web3 = new Web3(provider);
    return web3.eth.getAccounts().then((result) => {
      accounts = result;
      enigma = new Enigma(
        web3,
        EnigmaContract.networks['4447'].address,
        EnigmaTokenContract.networks['4447'].address,
        'http://localhost:3346',
        {
          gas: 4712388,
          gasPrice: 100000000000,
          from: accounts[0],
        },
      );
      enigma.admin();
      expect(Enigma.version()).toEqual('0.0.1');
    });
  });

  it('should move forward to the beginning of next epoch by calling dummy contract', async () => {
    const homedir = os.homedir();
    const sampleAddr = fs.readFileSync(path.join(homedir, '.enigma', 'addr-sample.txt'), 'utf-8');
    const sampleContract = new enigma.web3.eth.Contract(SampleContract['abi'], sampleAddr);
    const currentBlock = await enigma.web3.eth.getBlockNumber();
    const firstBlock = parseInt(await enigma.enigmaContract.methods.getFirstBlockNumber(currentBlock).call());
    const epochSize = parseInt(await enigma.enigmaContract.methods.getEpochSize().call());
    const epochRemains = (firstBlock + epochSize) - currentBlock;
    for (let i = 0; i < epochRemains; i++) {
      await sampleContract.methods.incrementCounter().send({from: accounts[8]});
    }
    // Wait for 2s for the Ppal node to pick up the new epoch
    await sleep(3000);
  }, constants.TIMEOUT_ADVANCE);

});