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 RefundableCrowdsale = artifacts.require('RefundableCrowdsaleImpl'); const SimpleToken = artifacts.require('SimpleToken'); contract('RefundableCrowdsale', function ([_, owner, wallet, investor, purchaser]) { 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( RefundableCrowdsale.new( this.openingTime, this.closingTime, rate, wallet, this.token.address, 0, { from: owner } ), EVMRevert, ); }); context('with crowdsale', function () { beforeEach(async function () { this.crowdsale = await RefundableCrowdsale.new( this.openingTime, this.closingTime, rate, wallet, this.token.address, goal, { from: owner } ); 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: owner }); }); 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: owner }); }); 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); }); }); }); }); }); });