139 lines
6.1 KiB
TypeScript
139 lines
6.1 KiB
TypeScript
import { BlockchainLifecycle } from '@0xproject/dev-utils';
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import { BigNumber } from '@0xproject/utils';
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import { Web3Wrapper } from '@0xproject/web3-wrapper';
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import * as chai from 'chai';
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import { WETH9Contract } from '../src/generated_contract_wrappers/weth9';
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import { artifacts } from '../src/utils/artifacts';
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import { expectInsufficientFundsAsync, expectRevertOrAlwaysFailingTransactionAsync } from '../src/utils/assertions';
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import { chaiSetup } from '../src/utils/chai_setup';
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import { constants } from '../src/utils/constants';
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import { provider, txDefaults, web3Wrapper } from '../src/utils/web3_wrapper';
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chaiSetup.configure();
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const expect = chai.expect;
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const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
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describe('EtherToken', () => {
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let account: string;
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const gasPrice = Web3Wrapper.toBaseUnitAmount(new BigNumber(20), 9);
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let etherToken: WETH9Contract;
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before(async () => {
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await blockchainLifecycle.startAsync();
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});
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after(async () => {
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await blockchainLifecycle.revertAsync();
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});
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before(async () => {
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const accounts = await web3Wrapper.getAvailableAddressesAsync();
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account = accounts[0];
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etherToken = await WETH9Contract.deployFrom0xArtifactAsync(artifacts.EtherToken, provider, {
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gasPrice,
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...txDefaults,
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});
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});
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beforeEach(async () => {
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await blockchainLifecycle.startAsync();
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});
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afterEach(async () => {
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await blockchainLifecycle.revertAsync();
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});
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describe('deposit', () => {
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it('should throw if caller attempts to deposit more Ether than caller balance', async () => {
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const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
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const ethToDeposit = initEthBalance.plus(1);
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return expectInsufficientFundsAsync(etherToken.deposit.sendTransactionAsync({ value: ethToDeposit }));
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});
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it('should convert deposited Ether to wrapped Ether tokens', async () => {
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const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
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const initEthTokenBalance = await etherToken.balanceOf.callAsync(account);
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const ethToDeposit = new BigNumber(Web3Wrapper.toWei(new BigNumber(1)));
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const txHash = await etherToken.deposit.sendTransactionAsync({ value: ethToDeposit });
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const receipt = await web3Wrapper.awaitTransactionSuccessAsync(
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txHash,
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constants.AWAIT_TRANSACTION_MINED_MS,
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);
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const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
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const finalEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
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const finalEthTokenBalance = await etherToken.balanceOf.callAsync(account);
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expect(finalEthBalance).to.be.bignumber.equal(initEthBalance.minus(ethToDeposit.plus(ethSpentOnGas)));
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expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.plus(ethToDeposit));
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});
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});
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describe('withdraw', () => {
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it('should throw if caller attempts to withdraw greater than caller balance', async () => {
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const initEthTokenBalance = await etherToken.balanceOf.callAsync(account);
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const ethTokensToWithdraw = initEthTokenBalance.plus(1);
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return expectRevertOrAlwaysFailingTransactionAsync(
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etherToken.withdraw.sendTransactionAsync(ethTokensToWithdraw),
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);
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});
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it('should convert ether tokens to ether with sufficient balance', async () => {
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const ethToDeposit = new BigNumber(Web3Wrapper.toWei(new BigNumber(1)));
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await web3Wrapper.awaitTransactionSuccessAsync(
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await etherToken.deposit.sendTransactionAsync({ value: ethToDeposit }),
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constants.AWAIT_TRANSACTION_MINED_MS,
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);
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const initEthTokenBalance = await etherToken.balanceOf.callAsync(account);
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const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
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const ethTokensToWithdraw = initEthTokenBalance;
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expect(ethTokensToWithdraw).to.not.be.bignumber.equal(0);
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const txHash = await etherToken.withdraw.sendTransactionAsync(ethTokensToWithdraw, {
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gas: constants.MAX_ETHERTOKEN_WITHDRAW_GAS,
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});
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const receipt = await web3Wrapper.awaitTransactionSuccessAsync(
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txHash,
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constants.AWAIT_TRANSACTION_MINED_MS,
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);
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const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
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const finalEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
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const finalEthTokenBalance = await etherToken.balanceOf.callAsync(account);
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expect(finalEthBalance).to.be.bignumber.equal(
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initEthBalance.plus(ethTokensToWithdraw.minus(ethSpentOnGas)),
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);
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expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.minus(ethTokensToWithdraw));
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});
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});
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describe('fallback', () => {
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it('should convert sent ether to ether tokens', async () => {
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const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
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const initEthTokenBalance = await etherToken.balanceOf.callAsync(account);
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const ethToDeposit = Web3Wrapper.toBaseUnitAmount(new BigNumber(1), 18);
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const txHash = await web3Wrapper.sendTransactionAsync({
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from: account,
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to: etherToken.address,
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value: ethToDeposit,
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gasPrice,
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});
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const receipt = await web3Wrapper.awaitTransactionSuccessAsync(
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txHash,
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constants.AWAIT_TRANSACTION_MINED_MS,
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);
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const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
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const finalEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
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const finalEthTokenBalance = await etherToken.balanceOf.callAsync(account);
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expect(finalEthBalance).to.be.bignumber.equal(initEthBalance.minus(ethToDeposit.plus(ethSpentOnGas)));
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expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.plus(ethToDeposit));
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});
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});
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});
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