openzeppelin-contracts/test/governance/extensions/GovernorComp.test.js

const { expect } = require('chai');
const Enums = require('../../helpers/enums');
const { GovernorHelper } = require('../../helpers/governance');

const Governor = artifacts.require('$GovernorCompMock');
const CallReceiver = artifacts.require('CallReceiverMock');

const TOKENS = [
  { Token: artifacts.require('$ERC20VotesComp'), mode: 'blocknumber' },
  { Token: artifacts.require('$ERC20VotesCompTimestampMock'), mode: 'timestamp' },
];

contract('GovernorComp', function (accounts) {
  const [owner, voter1, voter2, voter3, voter4] = accounts;

  const name = 'OZ-Governor';
  // const version = '1';
  const tokenName = 'MockToken';
  const tokenSymbol = 'MTKN';
  const tokenSupply = web3.utils.toWei('100');
  const votingDelay = web3.utils.toBN(4);
  const votingPeriod = web3.utils.toBN(16);
  const value = web3.utils.toWei('1');

  for (const { mode, Token } of TOKENS) {
    describe(`using ${Token._json.contractName}`, function () {
      beforeEach(async function () {
        this.owner = owner;
        this.token = await Token.new(tokenName, tokenSymbol, tokenName);
        this.mock = await Governor.new(name, this.token.address);
        this.receiver = await CallReceiver.new();

        this.helper = new GovernorHelper(this.mock, mode);

        await web3.eth.sendTransaction({ from: owner, to: this.mock.address, value });

        await this.token.$_mint(owner, tokenSupply);
        await this.helper.delegate({ token: this.token, to: voter1, value: web3.utils.toWei('10') }, { from: owner });
        await this.helper.delegate({ token: this.token, to: voter2, value: web3.utils.toWei('7') }, { from: owner });
        await this.helper.delegate({ token: this.token, to: voter3, value: web3.utils.toWei('5') }, { from: owner });
        await this.helper.delegate({ token: this.token, to: voter4, value: web3.utils.toWei('2') }, { from: owner });

        // default proposal
        this.proposal = this.helper.setProposal(
          [
            {
              target: this.receiver.address,
              value,
              data: this.receiver.contract.methods.mockFunction().encodeABI(),
            },
          ],
          '<proposal description>',
        );
      });

      it('deployment check', async function () {
        expect(await this.mock.name()).to.be.equal(name);
        expect(await this.mock.token()).to.be.equal(this.token.address);
        expect(await this.mock.votingDelay()).to.be.bignumber.equal(votingDelay);
        expect(await this.mock.votingPeriod()).to.be.bignumber.equal(votingPeriod);
        expect(await this.mock.quorum(0)).to.be.bignumber.equal('0');
      });

      it('voting with comp token', async function () {
        await this.helper.propose();
        await this.helper.waitForSnapshot();
        await this.helper.vote({ support: Enums.VoteType.For }, { from: voter1 });
        await this.helper.vote({ support: Enums.VoteType.For }, { from: voter2 });
        await this.helper.vote({ support: Enums.VoteType.Against }, { from: voter3 });
        await this.helper.vote({ support: Enums.VoteType.Abstain }, { from: voter4 });
        await this.helper.waitForDeadline();
        await this.helper.execute();

        expect(await this.mock.hasVoted(this.proposal.id, owner)).to.be.equal(false);
        expect(await this.mock.hasVoted(this.proposal.id, voter1)).to.be.equal(true);
        expect(await this.mock.hasVoted(this.proposal.id, voter2)).to.be.equal(true);
        expect(await this.mock.hasVoted(this.proposal.id, voter3)).to.be.equal(true);
        expect(await this.mock.hasVoted(this.proposal.id, voter4)).to.be.equal(true);

        await this.mock.proposalVotes(this.proposal.id).then(results => {
          expect(results.forVotes).to.be.bignumber.equal(web3.utils.toWei('17'));
          expect(results.againstVotes).to.be.bignumber.equal(web3.utils.toWei('5'));
          expect(results.abstainVotes).to.be.bignumber.equal(web3.utils.toWei('2'));
        });
      });
    });
  }
});