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Add ERC721Votes for NFT-based governance (#2944)

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Co-authored-by: Francisco Giordano <frangio.1@gmail.com>
Co-authored-by: Hadrien Croubois <hadrien@openzeppelin.com>
This commit is contained in:
JulissaDantes
2021-12-10 17:58:45 -04:00
committed by GitHub
parent 9a7e4a0112
commit b42b05311b
31 changed files with 1346 additions and 36 deletions
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59
test/utils/Checkpoints.test.js Normal file
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const { expectRevert, time } = require('@openzeppelin/test-helpers');
const { expect } = require('chai');
const CheckpointsImpl = artifacts.require('CheckpointsImpl');
contract('Checkpoints', function (accounts) {
beforeEach(async function () {
this.checkpoint = await CheckpointsImpl.new();
});
describe('without checkpoints', function () {
it('returns zero as latest value', async function () {
expect(await this.checkpoint.latest()).to.be.bignumber.equal('0');
});
it('returns zero as past value', async function () {
await time.advanceBlock();
expect(await this.checkpoint.getAtBlock(await web3.eth.getBlockNumber() - 1)).to.be.bignumber.equal('0');
});
});
describe('with checkpoints', function () {
beforeEach('pushing checkpoints', async function () {
this.tx1 = await this.checkpoint.push(1);
this.tx2 = await this.checkpoint.push(2);
await time.advanceBlock();
this.tx3 = await this.checkpoint.push(3);
await time.advanceBlock();
await time.advanceBlock();
});
it('returns latest value', async function () {
expect(await this.checkpoint.latest()).to.be.bignumber.equal('3');
});
it('returns past values', async function () {
expect(await this.checkpoint.getAtBlock(this.tx1.receipt.blockNumber - 1)).to.be.bignumber.equal('0');
expect(await this.checkpoint.getAtBlock(this.tx1.receipt.blockNumber)).to.be.bignumber.equal('1');
expect(await this.checkpoint.getAtBlock(this.tx2.receipt.blockNumber)).to.be.bignumber.equal('2');
// Block with no new checkpoints
expect(await this.checkpoint.getAtBlock(this.tx2.receipt.blockNumber + 1)).to.be.bignumber.equal('2');
expect(await this.checkpoint.getAtBlock(this.tx3.receipt.blockNumber)).to.be.bignumber.equal('3');
expect(await this.checkpoint.getAtBlock(this.tx3.receipt.blockNumber + 1)).to.be.bignumber.equal('3');
});
it('reverts if block number >= current block', async function () {
await expectRevert(
this.checkpoint.getAtBlock(await web3.eth.getBlockNumber()),
'Checkpoints: block not yet mined',
);
await expectRevert(
this.checkpoint.getAtBlock(await web3.eth.getBlockNumber() + 1),
'Checkpoints: block not yet mined',
);
});
});
});