344 lines
18 KiB
TypeScript
344 lines
18 KiB
TypeScript
import {BlockchainLifecycle} from '@0xproject/dev-utils';
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import BigNumber from 'bignumber.js';
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import * as chai from 'chai';
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import 'mocha';
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import * as Web3 from 'web3';
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import {
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ApprovalContractEventArgs,
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BlockParamLiteral,
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BlockRange,
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DecodedLogEvent,
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DepositContractEventArgs,
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EtherTokenEvents,
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Token,
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TransferContractEventArgs,
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WithdrawalContractEventArgs,
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ZeroEx,
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ZeroExError,
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} from '../src';
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import {artifacts} from '../src/artifacts';
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import {DoneCallback} from '../src/types';
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import {chaiSetup} from './utils/chai_setup';
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import {constants} from './utils/constants';
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import {TokenUtils} from './utils/token_utils';
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import {web3Factory} from './utils/web3_factory';
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chaiSetup.configure();
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const expect = chai.expect;
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const blockchainLifecycle = new BlockchainLifecycle(constants.RPC_URL);
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// Since the address depositing/withdrawing ETH/WETH also needs to pay gas costs for the transaction,
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// a small amount of ETH will be used to pay this gas cost. We therefore check that the difference between
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// the expected balance and actual balance (given the amount of ETH deposited), only deviates by the amount
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// required to pay gas costs.
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const MAX_REASONABLE_GAS_COST_IN_WEI = 62517;
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describe('EtherTokenWrapper', () => {
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let web3: Web3;
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let zeroEx: ZeroEx;
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let tokens: Token[];
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let userAddresses: string[];
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let addressWithETH: string;
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let wethContractAddress: string;
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let depositWeiAmount: BigNumber;
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let decimalPlaces: number;
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let addressWithoutFunds: string;
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const gasPrice = new BigNumber(1);
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const zeroExConfig = {
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gasPrice,
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networkId: constants.TESTRPC_NETWORK_ID,
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};
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const transferAmount = new BigNumber(42);
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const allowanceAmount = new BigNumber(42);
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const depositAmount = new BigNumber(42);
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const withdrawalAmount = new BigNumber(42);
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before(async () => {
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web3 = web3Factory.create();
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zeroEx = new ZeroEx(web3.currentProvider, zeroExConfig);
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tokens = await zeroEx.tokenRegistry.getTokensAsync();
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userAddresses = await zeroEx.getAvailableAddressesAsync();
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addressWithETH = userAddresses[0];
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wethContractAddress = (zeroEx.etherToken as any)._getContractAddress(artifacts.EtherTokenArtifact);
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depositWeiAmount = (zeroEx as any)._web3Wrapper.toWei(new BigNumber(5));
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decimalPlaces = 7;
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addressWithoutFunds = userAddresses[1];
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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('#depositAsync', () => {
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it('should successfully deposit ETH and issue Wrapped ETH tokens', async () => {
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const preETHBalance = await (zeroEx as any)._web3Wrapper.getBalanceInWeiAsync(addressWithETH);
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const preWETHBalance = await zeroEx.token.getBalanceAsync(wethContractAddress, addressWithETH);
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expect(preETHBalance).to.be.bignumber.gt(0);
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expect(preWETHBalance).to.be.bignumber.equal(0);
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const txHash = await zeroEx.etherToken.depositAsync(wethContractAddress, depositWeiAmount, addressWithETH);
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await zeroEx.awaitTransactionMinedAsync(txHash);
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const postETHBalanceInWei = await (zeroEx as any)._web3Wrapper.getBalanceInWeiAsync(addressWithETH);
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const postWETHBalanceInBaseUnits = await zeroEx.token.getBalanceAsync(wethContractAddress, addressWithETH);
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expect(postWETHBalanceInBaseUnits).to.be.bignumber.equal(depositWeiAmount);
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const remainingETHInWei = preETHBalance.minus(depositWeiAmount);
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const gasCost = remainingETHInWei.minus(postETHBalanceInWei);
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expect(gasCost).to.be.bignumber.lte(MAX_REASONABLE_GAS_COST_IN_WEI);
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});
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it('should throw if user has insufficient ETH balance for deposit', async () => {
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const preETHBalance = await (zeroEx as any)._web3Wrapper.getBalanceInWeiAsync(addressWithETH);
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const extraETHBalance = (zeroEx as any)._web3Wrapper.toWei(5, 'ether');
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const overETHBalanceinWei = preETHBalance.add(extraETHBalance);
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return expect(
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zeroEx.etherToken.depositAsync(wethContractAddress, overETHBalanceinWei, addressWithETH),
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).to.be.rejectedWith(ZeroExError.InsufficientEthBalanceForDeposit);
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});
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});
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describe('#withdrawAsync', () => {
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it('should successfully withdraw ETH in return for Wrapped ETH tokens', async () => {
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const ETHBalanceInWei = await (zeroEx as any)._web3Wrapper.getBalanceInWeiAsync(addressWithETH);
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await zeroEx.etherToken.depositAsync(wethContractAddress, depositWeiAmount, addressWithETH);
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const expectedPreETHBalance = ETHBalanceInWei.minus(depositWeiAmount);
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const preETHBalance = await (zeroEx as any)._web3Wrapper.getBalanceInWeiAsync(addressWithETH);
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const preWETHBalance = await zeroEx.token.getBalanceAsync(wethContractAddress, addressWithETH);
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let gasCost = expectedPreETHBalance.minus(preETHBalance);
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expect(gasCost).to.be.bignumber.lte(MAX_REASONABLE_GAS_COST_IN_WEI);
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expect(preWETHBalance).to.be.bignumber.equal(depositWeiAmount);
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const txHash = await zeroEx.etherToken.withdrawAsync(wethContractAddress, depositWeiAmount, addressWithETH);
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await zeroEx.awaitTransactionMinedAsync(txHash);
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const postETHBalance = await (zeroEx as any)._web3Wrapper.getBalanceInWeiAsync(addressWithETH);
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const postWETHBalanceInBaseUnits = await zeroEx.token.getBalanceAsync(wethContractAddress, addressWithETH);
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expect(postWETHBalanceInBaseUnits).to.be.bignumber.equal(0);
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const expectedETHBalance = preETHBalance.add(depositWeiAmount).round(decimalPlaces);
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gasCost = expectedETHBalance.minus(postETHBalance);
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expect(gasCost).to.be.bignumber.lte(MAX_REASONABLE_GAS_COST_IN_WEI);
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});
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it('should throw if user has insufficient WETH balance for withdrawl', async () => {
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const preWETHBalance = await zeroEx.token.getBalanceAsync(wethContractAddress, addressWithETH);
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expect(preWETHBalance).to.be.bignumber.equal(0);
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const overWETHBalance = preWETHBalance.add(999999999);
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return expect(
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zeroEx.etherToken.withdrawAsync(wethContractAddress, overWETHBalance, addressWithETH),
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).to.be.rejectedWith(ZeroExError.InsufficientWEthBalanceForWithdrawal);
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});
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});
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describe('#subscribe', () => {
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const indexFilterValues = {};
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let etherTokenAddress: string;
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before(() => {
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const tokenUtils = new TokenUtils(tokens);
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const etherToken = tokenUtils.getWethTokenOrThrow();
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etherTokenAddress = etherToken.address;
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});
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afterEach(() => {
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zeroEx.etherToken.unsubscribeAll();
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});
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// Hack: Mocha does not allow a test to be both async and have a `done` callback
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// Since we need to await the receipt of the event in the `subscribe` callback,
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// we do need both. A hack is to make the top-level async fn w/ a done callback and then
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// wrap the rest of the test in an async block
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// Source: https://github.com/mochajs/mocha/issues/2407
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it('Should receive the Transfer event when tokens are transfered', (done: DoneCallback) => {
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(async () => {
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const callback = (err: Error, logEvent: DecodedLogEvent<TransferContractEventArgs>) => {
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expect(err).to.be.null();
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expect(logEvent).to.not.be.undefined();
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expect(logEvent.isRemoved).to.be.false();
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expect(logEvent.log.logIndex).to.be.equal(0);
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expect(logEvent.log.transactionIndex).to.be.equal(0);
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expect(logEvent.log.blockNumber).to.be.a('number');
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const args = logEvent.log.args;
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expect(args._from).to.be.equal(addressWithETH);
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expect(args._to).to.be.equal(addressWithoutFunds);
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expect(args._value).to.be.bignumber.equal(transferAmount);
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done();
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};
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await zeroEx.etherToken.depositAsync(etherTokenAddress, transferAmount, addressWithETH);
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zeroEx.etherToken.subscribe(
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etherTokenAddress, EtherTokenEvents.Transfer, indexFilterValues, callback);
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await zeroEx.token.transferAsync(
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etherTokenAddress, addressWithETH, addressWithoutFunds, transferAmount,
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);
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})().catch(done);
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});
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it('Should receive the Approval event when allowance is being set', (done: DoneCallback) => {
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(async () => {
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const callback = (err: Error, logEvent: DecodedLogEvent<ApprovalContractEventArgs>) => {
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expect(err).to.be.null();
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expect(logEvent).to.not.be.undefined();
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expect(logEvent.isRemoved).to.be.false();
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const args = logEvent.log.args;
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expect(args._owner).to.be.equal(addressWithETH);
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expect(args._spender).to.be.equal(addressWithoutFunds);
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expect(args._value).to.be.bignumber.equal(allowanceAmount);
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done();
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};
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zeroEx.etherToken.subscribe(
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etherTokenAddress, EtherTokenEvents.Approval, indexFilterValues, callback);
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await zeroEx.token.setAllowanceAsync(
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etherTokenAddress, addressWithETH, addressWithoutFunds, allowanceAmount,
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);
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})().catch(done);
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});
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it('Should receive the Deposit event when ether is being deposited', (done: DoneCallback) => {
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(async () => {
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const callback = (err: Error, logEvent: DecodedLogEvent<DepositContractEventArgs>) => {
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expect(err).to.be.null();
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expect(logEvent).to.not.be.undefined();
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expect(logEvent.isRemoved).to.be.false();
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const args = logEvent.log.args;
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expect(args._owner).to.be.equal(addressWithETH);
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expect(args._value).to.be.bignumber.equal(depositAmount);
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done();
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};
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zeroEx.etherToken.subscribe(
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etherTokenAddress, EtherTokenEvents.Deposit, indexFilterValues, callback);
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await zeroEx.etherToken.depositAsync(
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etherTokenAddress, depositAmount, addressWithETH,
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);
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})().catch(done);
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});
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it('Should receive the Withdrawal event when ether is being withdrawn', (done: DoneCallback) => {
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(async () => {
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const callback = (err: Error, logEvent: DecodedLogEvent<WithdrawalContractEventArgs>) => {
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expect(err).to.be.null();
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expect(logEvent).to.not.be.undefined();
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expect(logEvent.isRemoved).to.be.false();
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const args = logEvent.log.args;
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expect(args._owner).to.be.equal(addressWithETH);
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expect(args._value).to.be.bignumber.equal(depositAmount);
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done();
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};
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await zeroEx.etherToken.depositAsync(
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etherTokenAddress, depositAmount, addressWithETH,
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);
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zeroEx.etherToken.subscribe(
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etherTokenAddress, EtherTokenEvents.Withdrawal, indexFilterValues, callback);
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await zeroEx.etherToken.withdrawAsync(
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etherTokenAddress, withdrawalAmount, addressWithETH,
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);
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})().catch(done);
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});
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it('should cancel outstanding subscriptions when ZeroEx.setProvider is called', (done: DoneCallback) => {
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(async () => {
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const callbackNeverToBeCalled = (err: Error, logEvent: DecodedLogEvent<ApprovalContractEventArgs>) => {
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done(new Error('Expected this subscription to have been cancelled'));
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};
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zeroEx.etherToken.subscribe(
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etherTokenAddress, EtherTokenEvents.Transfer, indexFilterValues, callbackNeverToBeCalled,
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);
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const callbackToBeCalled = (err: Error, logEvent: DecodedLogEvent<ApprovalContractEventArgs>) => {
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done();
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};
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const newProvider = web3Factory.getRpcProvider();
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zeroEx.setProvider(newProvider, constants.TESTRPC_NETWORK_ID);
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await zeroEx.etherToken.depositAsync(etherTokenAddress, transferAmount, addressWithETH);
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zeroEx.etherToken.subscribe(
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etherTokenAddress, EtherTokenEvents.Transfer, indexFilterValues, callbackToBeCalled,
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);
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await zeroEx.token.transferAsync(
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etherTokenAddress, addressWithETH, addressWithoutFunds, transferAmount,
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);
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})().catch(done);
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});
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it('Should cancel subscription when unsubscribe called', (done: DoneCallback) => {
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(async () => {
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const callbackNeverToBeCalled = (err: Error, logEvent: DecodedLogEvent<ApprovalContractEventArgs>) => {
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done(new Error('Expected this subscription to have been cancelled'));
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};
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await zeroEx.etherToken.depositAsync(etherTokenAddress, transferAmount, addressWithETH);
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const subscriptionToken = zeroEx.etherToken.subscribe(
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etherTokenAddress, EtherTokenEvents.Transfer, indexFilterValues, callbackNeverToBeCalled);
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zeroEx.etherToken.unsubscribe(subscriptionToken);
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await zeroEx.token.transferAsync(
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etherTokenAddress, addressWithETH, addressWithoutFunds, transferAmount,
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);
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done();
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})().catch(done);
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});
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});
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describe('#getLogsAsync', () => {
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let etherTokenAddress: string;
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let tokenTransferProxyAddress: string;
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const blockRange: BlockRange = {
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fromBlock: 0,
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toBlock: BlockParamLiteral.Latest,
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};
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let txHash: string;
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before(() => {
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addressWithETH = userAddresses[0];
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const tokenUtils = new TokenUtils(tokens);
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const etherToken = tokenUtils.getWethTokenOrThrow();
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etherTokenAddress = etherToken.address;
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tokenTransferProxyAddress = zeroEx.proxy.getContractAddress();
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});
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it('should get logs with decoded args emitted by Approval', async () => {
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txHash = await zeroEx.token.setUnlimitedProxyAllowanceAsync(etherTokenAddress, addressWithETH);
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await zeroEx.awaitTransactionMinedAsync(txHash);
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const eventName = EtherTokenEvents.Approval;
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const indexFilterValues = {};
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const logs = await zeroEx.etherToken.getLogsAsync<ApprovalContractEventArgs>(
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etherTokenAddress, eventName, blockRange, indexFilterValues,
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);
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expect(logs).to.have.length(1);
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const args = logs[0].args;
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expect(logs[0].event).to.be.equal(eventName);
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expect(args._owner).to.be.equal(addressWithETH);
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expect(args._spender).to.be.equal(tokenTransferProxyAddress);
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expect(args._value).to.be.bignumber.equal(zeroEx.token.UNLIMITED_ALLOWANCE_IN_BASE_UNITS);
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});
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it('should get logs with decoded args emitted by Deposit', async () => {
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await zeroEx.etherToken.depositAsync(etherTokenAddress, depositAmount, addressWithETH);
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const eventName = EtherTokenEvents.Deposit;
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const indexFilterValues = {};
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const logs = await zeroEx.etherToken.getLogsAsync<DepositContractEventArgs>(
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etherTokenAddress, eventName, blockRange, indexFilterValues,
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);
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expect(logs).to.have.length(1);
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const args = logs[0].args;
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expect(logs[0].event).to.be.equal(eventName);
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expect(args._owner).to.be.equal(addressWithETH);
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expect(args._value).to.be.bignumber.equal(depositAmount);
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});
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it('should only get the logs with the correct event name', async () => {
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txHash = await zeroEx.token.setUnlimitedProxyAllowanceAsync(etherTokenAddress, addressWithETH);
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await zeroEx.awaitTransactionMinedAsync(txHash);
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const differentEventName = EtherTokenEvents.Transfer;
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const indexFilterValues = {};
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const logs = await zeroEx.etherToken.getLogsAsync(
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etherTokenAddress, differentEventName, blockRange, indexFilterValues,
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);
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expect(logs).to.have.length(0);
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});
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it('should only get the logs with the correct indexed fields', async () => {
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txHash = await zeroEx.token.setUnlimitedProxyAllowanceAsync(etherTokenAddress, addressWithETH);
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await zeroEx.awaitTransactionMinedAsync(txHash);
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txHash = await zeroEx.token.setUnlimitedProxyAllowanceAsync(etherTokenAddress, addressWithoutFunds);
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await zeroEx.awaitTransactionMinedAsync(txHash);
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const eventName = EtherTokenEvents.Approval;
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const indexFilterValues = {
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_owner: addressWithETH,
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};
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const logs = await zeroEx.etherToken.getLogsAsync<ApprovalContractEventArgs>(
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etherTokenAddress, eventName, blockRange, indexFilterValues,
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);
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expect(logs).to.have.length(1);
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const args = logs[0].args;
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expect(args._owner).to.be.equal(addressWithETH);
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});
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});
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});
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