import 'mocha'; import * as _ from 'lodash'; import * as chai from 'chai'; import * as Web3 from 'web3'; import * as BigNumber from 'bignumber.js'; import * as dirtyChai from 'dirty-chai'; import ChaiBigNumber = require('chai-bignumber'); import promisify = require('es6-promisify'); import {web3Factory} from './utils/web3_factory'; import {ZeroEx} from '../src/0x.js'; import {BlockchainLifecycle} from './utils/blockchain_lifecycle'; import {orderFactory} from './utils/order_factory'; import {FillOrderValidationErrs, Token} from '../src/types'; chai.use(dirtyChai); chai.use(ChaiBigNumber()); const expect = chai.expect; const blockchainLifecycle = new BlockchainLifecycle(); describe('ExchangeWrapper', () => { let zeroEx: ZeroEx; let userAddresses: string[]; let web3: Web3; before(async () => { web3 = web3Factory.create(); zeroEx = new ZeroEx(web3); userAddresses = await promisify(web3.eth.getAccounts)(); }); beforeEach(async () => { await blockchainLifecycle.startAsync(); }); afterEach(async () => { await blockchainLifecycle.revertAsync(); }); describe('#isValidSignatureAsync', () => { // The Exchange smart contract `isValidSignature` method only validates orderHashes and assumes // the length of the data is exactly 32 bytes. Thus for these tests, we use data of this size. const dataHex = '0x6927e990021d23b1eb7b8789f6a6feaf98fe104bb0cf8259421b79f9a34222b0'; const signature = { v: 27, r: '0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33', s: '0x40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254', }; const address = '0x5409ed021d9299bf6814279a6a1411a7e866a631'; describe('should throw if passed a malformed signature', () => { it('malformed v', async () => { const malformedSignature = { v: 34, r: signature.r, s: signature.s, }; expect(zeroEx.exchange.isValidSignatureAsync(dataHex, malformedSignature, address)) .to.be.rejected(); }); it('r lacks 0x prefix', () => { const malformedR = signature.r.replace('0x', ''); const malformedSignature = { v: signature.v, r: malformedR, s: signature.s, }; expect(zeroEx.exchange.isValidSignatureAsync(dataHex, malformedSignature, address)) .to.be.rejected(); }); it('r is too short', () => { const malformedR = signature.r.substr(10); const malformedSignature = { v: signature.v, r: malformedR, s: signature.s.replace('0', 'z'), }; expect(zeroEx.exchange.isValidSignatureAsync(dataHex, malformedSignature, address)) .to.be.rejected(); }); it('s is not hex', () => { const malformedS = signature.s.replace('0', 'z'); const malformedSignature = { v: signature.v, r: signature.r, s: malformedS, }; expect(zeroEx.exchange.isValidSignatureAsync(dataHex, malformedSignature, address)) .to.be.rejected(); }); }); it('should return false if the data doesn\'t pertain to the signature & address', async () => { const isValid = await zeroEx.exchange.isValidSignatureAsync('0x0', signature, address); expect(isValid).to.be.false(); }); it('should return false if the address doesn\'t pertain to the signature & dataHex', async () => { const validUnrelatedAddress = '0x8b0292B11a196601eD2ce54B665CaFEca0347D42'; const isValid = await zeroEx.exchange.isValidSignatureAsync(dataHex, signature, validUnrelatedAddress); expect(isValid).to.be.false(); }); it('should return false if the signature doesn\'t pertain to the dataHex & address', async () => { const wrongSignature = {...signature, v: 28}; const isValid = await zeroEx.exchange.isValidSignatureAsync(dataHex, wrongSignature, address); expect(isValid).to.be.false(); }); it('should return true if the signature does pertain to the dataHex & address', async () => { const isValid = await zeroEx.exchange.isValidSignatureAsync(dataHex, signature, address); expect(isValid).to.be.true(); }); }); describe('#fillOrderAsync', () => { let tokens: Token[]; const fillAmount = new BigNumber(5); let maker: string; let taker: string; const addressBySymbol: {[symbol: string]: string} = {}; const shouldCheckTransfer = false; before('fetch tokens', async () => { tokens = await zeroEx.tokenRegistry.getTokensAsync(); _.forEach(tokens, token => { addressBySymbol[token.symbol] = token.address; }); }); beforeEach('setup', async () => { maker = userAddresses[0]; taker = userAddresses[1]; await zeroEx.token.setProxyAllowanceAsync(addressBySymbol.MLN, maker, new BigNumber(5)); await zeroEx.token.transferAsync(addressBySymbol.GNT, maker, taker, new BigNumber(5)); await zeroEx.token.setProxyAllowanceAsync(addressBySymbol.GNT, taker, new BigNumber(5)); }); afterEach('reset default account', () => { zeroEx.setDefaultAccount(userAddresses[0]); }); describe('failed fills', () => { it('should throw when the fill amount is zero', async () => { const makerAmount = 5; const takerAmount = 5; const signedOrder = await orderFactory.createSignedOrderAsync(zeroEx, maker, taker, makerAmount, addressBySymbol.MLN, takerAmount, addressBySymbol.GNT); const zeroFillAmount = new BigNumber(0); zeroEx.setDefaultAccount(taker); expect(zeroEx.exchange.fillOrderAsync(signedOrder, zeroFillAmount, shouldCheckTransfer)) .to.be.rejectedWith(FillOrderValidationErrs.FILL_AMOUNT_IS_ZERO); }); it('should throw when sender is not a taker', async () => { const makerAmount = 5; const takerAmount = 5; const signedOrder = await orderFactory.createSignedOrderAsync(zeroEx, maker, taker, makerAmount, addressBySymbol.MLN, takerAmount, addressBySymbol.GNT); expect(zeroEx.exchange.fillOrderAsync(signedOrder, fillAmount, shouldCheckTransfer)) .to.be.rejectedWith(FillOrderValidationErrs.NOT_A_TAKER); }); it('should throw when order is expired', async () => { const oldTimestamp = new BigNumber(42); const makerAmount = 5; const takerAmount = 5; const signedOrder = await orderFactory.createSignedOrderAsync(zeroEx, maker, taker, makerAmount, addressBySymbol.MLN, takerAmount, addressBySymbol.GNT, oldTimestamp); zeroEx.setDefaultAccount(taker); expect(zeroEx.exchange.fillOrderAsync(signedOrder, fillAmount, shouldCheckTransfer)) .to.be.rejectedWith(FillOrderValidationErrs.EXPIRED); }); }); describe('successful fills', () => { it('should fill the valid order', async () => { const makerAmount = 5; const takerAmount = 5; const signedOrder = await orderFactory.createSignedOrderAsync(zeroEx, maker, taker, makerAmount, addressBySymbol.MLN, takerAmount, addressBySymbol.GNT); zeroEx.setDefaultAccount(taker); await zeroEx.exchange.fillOrderAsync(signedOrder, fillAmount, shouldCheckTransfer); expect(await zeroEx.token.getBalanceAsync(addressBySymbol.MLN, taker)) .to.be.bignumber.equal(fillAmount); expect(await zeroEx.token.getBalanceAsync(addressBySymbol.GNT, taker)) .to.be.bignumber.equal(0); }); }); }); });