import { BlockchainLifecycle } from '@0xproject/dev-utils'; import { assetProxyUtils, generatePseudoRandomSalt } from '@0xproject/order-utils'; import { OrderWithoutExchangeAddress, RevertReason, SignedOrder } from '@0xproject/types'; import { BigNumber } from '@0xproject/utils'; import * as chai from 'chai'; import * as _ from 'lodash'; import { DummyERC20TokenContract } from '../../src/generated_contract_wrappers/dummy_e_r_c20_token'; import { ERC20ProxyContract } from '../../src/generated_contract_wrappers/e_r_c20_proxy'; import { ExchangeContract } from '../../src/generated_contract_wrappers/exchange'; import { ExchangeWrapperContract } from '../../src/generated_contract_wrappers/exchange_wrapper'; import { WhitelistContract } from '../../src/generated_contract_wrappers/whitelist'; import { artifacts } from '../../src/utils/artifacts'; import { expectRevertReasonOrAlwaysFailingTransactionAsync } from '../../src/utils/assertions'; import { chaiSetup } from '../../src/utils/chai_setup'; 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 { ERC20BalancesByOwner, SignedTransaction } from '../../src/utils/types'; import { provider, txDefaults, web3Wrapper } from '../../src/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 orderWithoutExchangeAddress: OrderWithoutExchangeAddress; let orderFactory: OrderFactory; let makerTransactionFactory: TransactionFactory; let takerTransactionFactory: TransactionFactory; let exchangeWrapper: ExchangeWrapper; let erc20Wrapper: ERC20Wrapper; let defaultMakerTokenAddress: string; let defaultTakerTokenAddress: string; let makerPrivateKey: Buffer; let takerPrivateKey: Buffer; before(async () => { await blockchainLifecycle.startAsync(); }); after(async () => { await blockchainLifecycle.revertAsync(); }); beforeEach(async () => { await blockchainLifecycle.startAsync(); }); afterEach(async () => { await blockchainLifecycle.revertAsync(); }); before(async () => { const accounts = await web3Wrapper.getAvailableAddressesAsync(); const usedAddresses = ([owner, senderAddress, makerAddress, takerAddress, feeRecipientAddress] = _.slice( accounts, 0, 5, )); erc20Wrapper = new ERC20Wrapper(provider, usedAddresses, owner); const numDummyErc20ToDeploy = 3; [erc20TokenA, erc20TokenB, zrxToken] = await erc20Wrapper.deployDummyTokensAsync( numDummyErc20ToDeploy, constants.DUMMY_TOKEN_DECIMALS, ); erc20Proxy = await erc20Wrapper.deployProxyAsync(); await erc20Wrapper.setBalancesAndAllowancesAsync(); exchange = await ExchangeContract.deployFrom0xArtifactAsync( artifacts.Exchange, provider, txDefaults, assetProxyUtils.encodeERC20AssetData(zrxToken.address), ); exchangeWrapper = new ExchangeWrapper(exchange, provider); await exchangeWrapper.registerAssetProxyAsync(erc20Proxy.address, owner); await web3Wrapper.awaitTransactionSuccessAsync( await erc20Proxy.addAuthorizedAddress.sendTransactionAsync(exchange.address, { from: owner }), constants.AWAIT_TRANSACTION_MINED_MS, ); defaultMakerTokenAddress = erc20TokenA.address; defaultTakerTokenAddress = erc20TokenB.address; const defaultOrderParams = { ...constants.STATIC_ORDER_PARAMS, senderAddress, exchangeAddress: exchange.address, makerAddress, feeRecipientAddress, makerAssetData: assetProxyUtils.encodeERC20AssetData(defaultMakerTokenAddress), takerAssetData: assetProxyUtils.encodeERC20AssetData(defaultTakerTokenAddress), }; makerPrivateKey = constants.TESTRPC_PRIVATE_KEYS[accounts.indexOf(makerAddress)]; 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); }); describe('executeTransaction', () => { describe('fillOrder', () => { let takerAssetFillAmount: BigNumber; beforeEach(async () => { erc20Balances = await erc20Wrapper.getBalancesAsync(); signedOrder = orderFactory.newSignedOrder(); orderWithoutExchangeAddress = orderUtils.getOrderWithoutExchangeAddress(signedOrder); takerAssetFillAmount = signedOrder.takerAssetAmount.div(2); const data = exchange.fillOrder.getABIEncodedTransactionData( orderWithoutExchangeAddress, takerAssetFillAmount, signedOrder.signature, ); signedTx = takerTransactionFactory.newSignedTransaction(data); }); it('should throw if not called by specified sender', async () => { return expectRevertReasonOrAlwaysFailingTransactionAsync( exchangeWrapper.executeTransactionAsync(signedTx, takerAddress), RevertReason.FailedExecution, ); }); 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 expectRevertReasonOrAlwaysFailingTransactionAsync( exchangeWrapper.executeTransactionAsync(signedTx, senderAddress), RevertReason.InvalidTxHash, ); }); it('should reset the currentContextAddress', async () => { await exchangeWrapper.executeTransactionAsync(signedTx, senderAddress); const currentContextAddress = await exchange.currentContextAddress.callAsync(); expect(currentContextAddress).to.equal(constants.NULL_ADDRESS); }); }); describe('cancelOrder', () => { beforeEach(async () => { const data = exchange.cancelOrder.getABIEncodedTransactionData(orderWithoutExchangeAddress); signedTx = makerTransactionFactory.newSignedTransaction(data); }); it('should throw if not called by specified sender', async () => { return expectRevertReasonOrAlwaysFailingTransactionAsync( exchangeWrapper.executeTransactionAsync(signedTx, makerAddress), RevertReason.FailedExecution, ); }); it('should cancel the order when signed by maker and called by sender', async () => { await exchangeWrapper.executeTransactionAsync(signedTx, senderAddress); return expectRevertReasonOrAlwaysFailingTransactionAsync( exchangeWrapper.fillOrderAsync(signedOrder, senderAddress), RevertReason.OrderUnfillable, ); }); }); describe('cancelOrdersUpTo', () => { let exchangeWrapperContract: ExchangeWrapperContract; before(async () => { exchangeWrapperContract = await ExchangeWrapperContract.deployFrom0xArtifactAsync( artifacts.ExchangeWrapper, provider, txDefaults, exchange.address, ); }); it("should cancel an order if called from the order's sender", async () => { const orderSalt = new BigNumber(0); signedOrder = orderFactory.newSignedOrder({ senderAddress: exchangeWrapperContract.address, salt: orderSalt, }); const targetOrderEpoch = orderSalt.add(1); const cancelData = exchange.cancelOrdersUpTo.getABIEncodedTransactionData(targetOrderEpoch); const signedCancelTx = makerTransactionFactory.newSignedTransaction(cancelData); await exchangeWrapperContract.cancelOrdersUpTo.sendTransactionAsync( targetOrderEpoch, signedCancelTx.salt, signedCancelTx.signature, { from: makerAddress, }, ); const takerAssetFillAmount = signedOrder.takerAssetAmount; orderWithoutExchangeAddress = orderUtils.getOrderWithoutExchangeAddress(signedOrder); const fillData = exchange.fillOrder.getABIEncodedTransactionData( orderWithoutExchangeAddress, takerAssetFillAmount, signedOrder.signature, ); const signedFillTx = takerTransactionFactory.newSignedTransaction(fillData); return expectRevertReasonOrAlwaysFailingTransactionAsync( exchangeWrapperContract.fillOrder.sendTransactionAsync( orderWithoutExchangeAddress, takerAssetFillAmount, signedFillTx.salt, signedOrder.signature, signedFillTx.signature, { from: takerAddress }, ), RevertReason.FailedExecution, ); }); it("should not cancel an order if not called from the order's sender", async () => { const orderSalt = new BigNumber(0); signedOrder = orderFactory.newSignedOrder({ senderAddress: exchangeWrapperContract.address, salt: orderSalt, }); const targetOrderEpoch = orderSalt.add(1); await exchangeWrapper.cancelOrdersUpToAsync(targetOrderEpoch, makerAddress); erc20Balances = await erc20Wrapper.getBalancesAsync(); const takerAssetFillAmount = signedOrder.takerAssetAmount; orderWithoutExchangeAddress = orderUtils.getOrderWithoutExchangeAddress(signedOrder); const data = exchange.fillOrder.getABIEncodedTransactionData( orderWithoutExchangeAddress, takerAssetFillAmount, signedOrder.signature, ); signedTx = takerTransactionFactory.newSignedTransaction(data); await exchangeWrapperContract.fillOrder.sendTransactionAsync( orderWithoutExchangeAddress, takerAssetFillAmount, signedTx.salt, signedOrder.signature, signedTx.signature, { from: takerAddress }, ); 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)), ); }); }); }); describe('Whitelist', () => { let whitelist: WhitelistContract; let whitelistOrderFactory: OrderFactory; before(async () => { whitelist = await WhitelistContract.deployFrom0xArtifactAsync( artifacts.Whitelist, provider, txDefaults, exchange.address, ); const isApproved = true; await web3Wrapper.awaitTransactionSuccessAsync( await exchange.setSignatureValidatorApproval.sendTransactionAsync(whitelist.address, isApproved, { from: takerAddress, }), constants.AWAIT_TRANSACTION_MINED_MS, ); const defaultOrderParams = { ...constants.STATIC_ORDER_PARAMS, senderAddress: whitelist.address, exchangeAddress: exchange.address, makerAddress, feeRecipientAddress, makerAssetData: assetProxyUtils.encodeERC20AssetData(defaultMakerTokenAddress), takerAssetData: assetProxyUtils.encodeERC20AssetData(defaultTakerTokenAddress), }; whitelistOrderFactory = new OrderFactory(makerPrivateKey, defaultOrderParams); }); beforeEach(async () => { signedOrder = whitelistOrderFactory.newSignedOrder(); erc20Balances = await erc20Wrapper.getBalancesAsync(); }); it('should revert if maker has not been whitelisted', async () => { const isApproved = true; await web3Wrapper.awaitTransactionSuccessAsync( await whitelist.updateWhitelistStatus.sendTransactionAsync(takerAddress, isApproved, { from: owner }), constants.AWAIT_TRANSACTION_MINED_MS, ); orderWithoutExchangeAddress = orderUtils.getOrderWithoutExchangeAddress(signedOrder); const takerAssetFillAmount = signedOrder.takerAssetAmount; const salt = generatePseudoRandomSalt(); return expectRevertReasonOrAlwaysFailingTransactionAsync( whitelist.fillOrderIfWhitelisted.sendTransactionAsync( orderWithoutExchangeAddress, takerAssetFillAmount, salt, signedOrder.signature, { from: takerAddress }, ), RevertReason.MakerNotWhitelisted, ); }); it('should revert if taker has not been whitelisted', async () => { const isApproved = true; await web3Wrapper.awaitTransactionSuccessAsync( await whitelist.updateWhitelistStatus.sendTransactionAsync(makerAddress, isApproved, { from: owner }), constants.AWAIT_TRANSACTION_MINED_MS, ); orderWithoutExchangeAddress = orderUtils.getOrderWithoutExchangeAddress(signedOrder); const takerAssetFillAmount = signedOrder.takerAssetAmount; const salt = generatePseudoRandomSalt(); return expectRevertReasonOrAlwaysFailingTransactionAsync( whitelist.fillOrderIfWhitelisted.sendTransactionAsync( orderWithoutExchangeAddress, takerAssetFillAmount, salt, signedOrder.signature, { from: takerAddress }, ), RevertReason.TakerNotWhitelisted, ); }); it('should fill the order if maker and taker have been whitelisted', async () => { const isApproved = true; await web3Wrapper.awaitTransactionSuccessAsync( await whitelist.updateWhitelistStatus.sendTransactionAsync(makerAddress, isApproved, { from: owner }), constants.AWAIT_TRANSACTION_MINED_MS, ); await web3Wrapper.awaitTransactionSuccessAsync( await whitelist.updateWhitelistStatus.sendTransactionAsync(takerAddress, isApproved, { from: owner }), constants.AWAIT_TRANSACTION_MINED_MS, ); orderWithoutExchangeAddress = orderUtils.getOrderWithoutExchangeAddress(signedOrder); const takerAssetFillAmount = signedOrder.takerAssetAmount; const salt = generatePseudoRandomSalt(); await web3Wrapper.awaitTransactionSuccessAsync( await whitelist.fillOrderIfWhitelisted.sendTransactionAsync( orderWithoutExchangeAddress, takerAssetFillAmount, salt, signedOrder.signature, { from: takerAddress }, ), constants.AWAIT_TRANSACTION_MINED_MS, ); const newBalances = await erc20Wrapper.getBalancesAsync(); const makerAssetFillAmount = signedOrder.makerAssetAmount; const makerFeePaid = signedOrder.makerFee; const takerFeePaid = signedOrder.takerFee; 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)), ); }); }); });