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import { ZeroEx } from '0x.js';
import { BlockchainLifecycle } from '@0xproject/dev-utils';
import { BigNumber } from '@0xproject/utils';
import * as chai from 'chai';
import * as ethUtil from 'ethereumjs-util';
import * as Web3 from 'web3';
import { DummyERC20TokenContract } from '../../src/contract_wrappers/generated/dummy_e_r_c20_token';
import { ERC20ProxyContract } from '../../src/contract_wrappers/generated/e_r_c20_proxy';
import { ExchangeContract } from '../../src/contract_wrappers/generated/exchange';
import { assetProxyUtils } from '../../src/utils/asset_proxy_utils';
import { constants } from '../../src/utils/constants';
import { ERC20Wrapper } from '../../src/utils/erc20_wrapper';
import { ExchangeWrapper } from '../../src/utils/exchange_wrapper';
import { OrderFactory } from '../../src/utils/order_factory';
import { orderUtils } from '../../src/utils/order_utils';
import { TransactionFactory } from '../../src/utils/transaction_factory';
import {
AssetProxyId,
ContractName,
ERC20BalancesByOwner,
ExchangeContractErrs,
OrderStruct,
SignatureType,
SignedOrder,
SignedTransaction,
} from '../../src/utils/types';
import { chaiSetup } from '../utils/chai_setup';
import { deployer } from '../utils/deployer';
import { provider, web3Wrapper } from '../utils/web3_wrapper';
chaiSetup.configure();
const expect = chai.expect;
const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
describe('Exchange transactions', () => {
let senderAddress: string;
let owner: string;
let makerAddress: string;
let takerAddress: string;
let feeRecipientAddress: string;
let erc20TokenA: DummyERC20TokenContract;
let erc20TokenB: DummyERC20TokenContract;
let zrxToken: DummyERC20TokenContract;
let exchange: ExchangeContract;
let erc20Proxy: ERC20ProxyContract;
let erc20Balances: ERC20BalancesByOwner;
let signedOrder: SignedOrder;
let signedTx: SignedTransaction;
let order: OrderStruct;
let orderFactory: OrderFactory;
let makerTransactionFactory: TransactionFactory;
let takerTransactionFactory: TransactionFactory;
let exchangeWrapper: ExchangeWrapper;
let erc20Wrapper: ERC20Wrapper;
let defaultMakerTokenAddress: string;
let defaultTakerTokenAddress: string;
let zeroEx: ZeroEx;
before(async () => {
const accounts = await web3Wrapper.getAvailableAddressesAsync();
const usedAddresses = ([owner, senderAddress, makerAddress, takerAddress, feeRecipientAddress] = accounts);
erc20Wrapper = new ERC20Wrapper(deployer, provider, usedAddresses, owner);
[erc20TokenA, erc20TokenB, zrxToken] = await erc20Wrapper.deployDummyTokensAsync();
erc20Proxy = await erc20Wrapper.deployProxyAsync();
await erc20Wrapper.setBalancesAndAllowancesAsync();
const exchangeInstance = await deployer.deployAsync(ContractName.Exchange, [
assetProxyUtils.encodeERC20ProxyData(zrxToken.address),
]);
exchange = new ExchangeContract(exchangeInstance.abi, exchangeInstance.address, provider);
zeroEx = new ZeroEx(provider, {
exchangeContractAddress: exchange.address,
networkId: constants.TESTRPC_NETWORK_ID,
});
exchangeWrapper = new ExchangeWrapper(exchange, zeroEx);
await exchangeWrapper.registerAssetProxyAsync(AssetProxyId.ERC20, erc20Proxy.address, owner);
await erc20Proxy.addAuthorizedAddress.sendTransactionAsync(exchange.address, { from: owner });
defaultMakerTokenAddress = erc20TokenA.address;
defaultTakerTokenAddress = erc20TokenB.address;
const defaultOrderParams = {
...constants.STATIC_ORDER_PARAMS,
senderAddress,
exchangeAddress: exchange.address,
makerAddress,
feeRecipientAddress,
makerAssetData: assetProxyUtils.encodeERC20ProxyData(defaultMakerTokenAddress),
takerAssetData: assetProxyUtils.encodeERC20ProxyData(defaultTakerTokenAddress),
};
const makerPrivateKey = constants.TESTRPC_PRIVATE_KEYS[accounts.indexOf(makerAddress)];
const takerPrivateKey = constants.TESTRPC_PRIVATE_KEYS[accounts.indexOf(takerAddress)];
orderFactory = new OrderFactory(makerPrivateKey, defaultOrderParams);
makerTransactionFactory = new TransactionFactory(makerPrivateKey, exchange.address);
takerTransactionFactory = new TransactionFactory(takerPrivateKey, exchange.address);
});
beforeEach(async () => {
await blockchainLifecycle.startAsync();
});
afterEach(async () => {
await blockchainLifecycle.revertAsync();
});
describe('executeTransaction', () => {
describe('fillOrder', () => {
let takerAssetFillAmount: BigNumber;
beforeEach(async () => {
erc20Balances = await erc20Wrapper.getBalancesAsync();
signedOrder = orderFactory.newSignedOrder();
order = orderUtils.getOrderStruct(signedOrder);
takerAssetFillAmount = signedOrder.takerAssetAmount.div(2);
const data = exchange.fillOrder.getABIEncodedTransactionData(
order,
takerAssetFillAmount,
signedOrder.signature,
);
signedTx = takerTransactionFactory.newSignedTransaction(data);
});
it('should throw if not called by specified sender', async () => {
return expect(exchangeWrapper.executeTransactionAsync(signedTx, takerAddress)).to.be.rejectedWith(
constants.REVERT,
);
});
it('should transfer the correct amounts when signed by taker and called by sender', async () => {
await exchangeWrapper.executeTransactionAsync(signedTx, senderAddress);
const newBalances = await erc20Wrapper.getBalancesAsync();
const makerAssetFillAmount = takerAssetFillAmount
.times(signedOrder.makerAssetAmount)
.dividedToIntegerBy(signedOrder.takerAssetAmount);
const makerFeePaid = signedOrder.makerFee
.times(makerAssetFillAmount)
.dividedToIntegerBy(signedOrder.makerAssetAmount);
const takerFeePaid = signedOrder.takerFee
.times(makerAssetFillAmount)
.dividedToIntegerBy(signedOrder.makerAssetAmount);
expect(newBalances[makerAddress][defaultMakerTokenAddress]).to.be.bignumber.equal(
erc20Balances[makerAddress][defaultMakerTokenAddress].minus(makerAssetFillAmount),
);
expect(newBalances[makerAddress][defaultTakerTokenAddress]).to.be.bignumber.equal(
erc20Balances[makerAddress][defaultTakerTokenAddress].add(takerAssetFillAmount),
);
expect(newBalances[makerAddress][zrxToken.address]).to.be.bignumber.equal(
erc20Balances[makerAddress][zrxToken.address].minus(makerFeePaid),
);
expect(newBalances[takerAddress][defaultTakerTokenAddress]).to.be.bignumber.equal(
erc20Balances[takerAddress][defaultTakerTokenAddress].minus(takerAssetFillAmount),
);
expect(newBalances[takerAddress][defaultMakerTokenAddress]).to.be.bignumber.equal(
erc20Balances[takerAddress][defaultMakerTokenAddress].add(makerAssetFillAmount),
);
expect(newBalances[takerAddress][zrxToken.address]).to.be.bignumber.equal(
erc20Balances[takerAddress][zrxToken.address].minus(takerFeePaid),
);
expect(newBalances[feeRecipientAddress][zrxToken.address]).to.be.bignumber.equal(
erc20Balances[feeRecipientAddress][zrxToken.address].add(makerFeePaid.add(takerFeePaid)),
);
});
it('should throw if the a 0x transaction with the same transactionHash has already been executed', async () => {
await exchangeWrapper.executeTransactionAsync(signedTx, senderAddress);
return expect(exchangeWrapper.executeTransactionAsync(signedTx, senderAddress)).to.be.rejectedWith(
constants.REVERT,
);
});
it('should reset the currentContextAddress', async () => {
await exchangeWrapper.executeTransactionAsync(signedTx, senderAddress);
const currentContextAddress = await exchange.currentContextAddress.callAsync();
expect(currentContextAddress).to.equal(ZeroEx.NULL_ADDRESS);
});
});
describe('cancelOrder', () => {
beforeEach(async () => {
const data = exchange.cancelOrder.getABIEncodedTransactionData(order);
signedTx = makerTransactionFactory.newSignedTransaction(data);
});
it('should throw if not called by specified sender', async () => {
return expect(exchangeWrapper.executeTransactionAsync(signedTx, makerAddress)).to.be.rejectedWith(
constants.REVERT,
);
});
it('should cancel the order when signed by maker and called by sender', async () => {
await exchangeWrapper.executeTransactionAsync(signedTx, senderAddress);
const res = await exchangeWrapper.fillOrderAsync(signedOrder, takerAddress);
const newBalances = await erc20Wrapper.getBalancesAsync();
expect(newBalances).to.deep.equal(erc20Balances);
});
});
});
});
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