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openzeppelin-contracts/test/crowdsale/RefundableCrowdsale.test.js

114 lines
3.9 KiB

const { ether } = require('../helpers/ether');
const { advanceBlock } = require('../helpers/advanceToBlock');
const { increaseTimeTo, duration } = require('../helpers/increaseTime');
const { latestTime } = require('../helpers/latestTime');
const { expectThrow } = require('../helpers/expectThrow');
const { EVMRevert } = require('../helpers/EVMRevert');
const { ethGetBalance } = require('../helpers/web3');
const BigNumber = web3.BigNumber;
require('chai')
.use(require('chai-bignumber')(BigNumber))
.should();
const RefundableCrowdsaleImpl = artifacts.require('RefundableCrowdsaleImpl');
const SimpleToken = artifacts.require('SimpleToken');
contract('RefundableCrowdsale', function ([_, wallet, investor, purchaser, anyone]) {
const rate = new BigNumber(1);
const goal = ether(50);
const lessThanGoal = ether(45);
const tokenSupply = new BigNumber('1e22');
before(async function () {
// Advance to the next block to correctly read time in the solidity "now" function interpreted by ganache
await advanceBlock();
});
beforeEach(async function () {
this.openingTime = (await latestTime()) + duration.weeks(1);
this.closingTime = this.openingTime + duration.weeks(1);
this.afterClosingTime = this.closingTime + duration.seconds(1);
this.preWalletBalance = await ethGetBalance(wallet);
this.token = await SimpleToken.new();
});
it('rejects a goal of zero', async function () {
await expectThrow(
RefundableCrowdsaleImpl.new(
this.openingTime, this.closingTime, rate, wallet, this.token.address, 0,
),
EVMRevert,
);
});
context('with crowdsale', function () {
beforeEach(async function () {
this.crowdsale = await RefundableCrowdsaleImpl.new(
this.openingTime, this.closingTime, rate, wallet, this.token.address, goal
);
await this.token.transfer(this.crowdsale.address, tokenSupply);
});
context('before opening time', function () {
it('denies refunds', async function () {
await expectThrow(this.crowdsale.claimRefund(investor), EVMRevert);
});
});
context('after opening time', function () {
beforeEach(async function () {
await increaseTimeTo(this.openingTime);
});
it('denies refunds', async function () {
await expectThrow(this.crowdsale.claimRefund(investor), EVMRevert);
});
context('with unreached goal', function () {
beforeEach(async function () {
await this.crowdsale.sendTransaction({ value: lessThanGoal, from: investor });
});
context('after closing time and finalization', function () {
beforeEach(async function () {
await increaseTimeTo(this.afterClosingTime);
await this.crowdsale.finalize({ from: anyone });
});
it('refunds', async function () {
const pre = await ethGetBalance(investor);
await this.crowdsale.claimRefund(investor, { gasPrice: 0 });
const post = await ethGetBalance(investor);
post.minus(pre).should.be.bignumber.equal(lessThanGoal);
});
});
});
context('with reached goal', function () {
beforeEach(async function () {
await this.crowdsale.sendTransaction({ value: goal, from: investor });
});
context('after closing time and finalization', function () {
beforeEach(async function () {
await increaseTimeTo(this.afterClosingTime);
await this.crowdsale.finalize({ from: anyone });
});
it('denies refunds', async function () {
await expectThrow(this.crowdsale.claimRefund(investor), EVMRevert);
});
it('forwards funds to wallet', async function () {
const postWalletBalance = await ethGetBalance(wallet);
postWalletBalance.minus(this.preWalletBalance).should.be.bignumber.equal(goal);
});
});
});
});
});
});