import { BlockchainLifecycle } from '@0xproject/dev-utils'; import { BigNumber } from '@0xproject/utils'; import * as chai from 'chai'; import * as _ from 'lodash'; import 'mocha'; import * as Sinon from 'sinon'; import { ApprovalContractEventArgs, LogWithDecodedArgs, Order, TokenEvents, ZeroEx } from '../src'; import { chaiSetup } from './utils/chai_setup'; import { constants } from './utils/constants'; import { TokenUtils } from './utils/token_utils'; import { web3Factory } from './utils/web3_factory'; const blockchainLifecycle = new BlockchainLifecycle(constants.RPC_URL); chaiSetup.configure(); const expect = chai.expect; const SHOULD_ADD_PERSONAL_MESSAGE_PREFIX = false; describe('ZeroEx library', () => { const web3 = web3Factory.create(); const config = { networkId: constants.TESTRPC_NETWORK_ID, }; const zeroEx = new ZeroEx(web3.currentProvider, config); describe('#setProvider', () => { it('overrides provider in nested web3s and invalidates contractInstances', async () => { // Instantiate the contract instances with the current provider await (zeroEx.exchange as any)._getExchangeContractAsync(); await (zeroEx.tokenRegistry as any)._getTokenRegistryContractAsync(); expect((zeroEx.exchange as any)._exchangeContractIfExists).to.not.be.undefined(); expect((zeroEx.tokenRegistry as any)._tokenRegistryContractIfExists).to.not.be.undefined(); const newProvider = web3Factory.getRpcProvider(); // Add property to newProvider so that we can differentiate it from old provider (newProvider as any).zeroExTestId = 1; zeroEx.setProvider(newProvider, constants.TESTRPC_NETWORK_ID); // Check that contractInstances with old provider are removed after provider update expect((zeroEx.exchange as any)._exchangeContractIfExists).to.be.undefined(); expect((zeroEx.tokenRegistry as any)._tokenRegistryContractIfExists).to.be.undefined(); // Check that all nested web3 wrapper instances return the updated provider const nestedWeb3WrapperProvider = (zeroEx as any)._web3Wrapper.getCurrentProvider(); expect(nestedWeb3WrapperProvider.zeroExTestId).to.be.a('number'); const exchangeWeb3WrapperProvider = (zeroEx.exchange as any)._web3Wrapper.getCurrentProvider(); expect(exchangeWeb3WrapperProvider.zeroExTestId).to.be.a('number'); const tokenRegistryWeb3WrapperProvider = (zeroEx.tokenRegistry as any)._web3Wrapper.getCurrentProvider(); expect(tokenRegistryWeb3WrapperProvider.zeroExTestId).to.be.a('number'); }); }); describe('#isValidSignature', () => { // 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'; it("should return false if the data doesn't pertain to the signature & address", async () => { expect(ZeroEx.isValidSignature('0x0', signature, address)).to.be.false(); return expect( (zeroEx.exchange as any)._isValidSignatureUsingContractCallAsync('0x0', signature, address), ).to.become(false); }); it("should return false if the address doesn't pertain to the signature & data", async () => { const validUnrelatedAddress = '0x8b0292b11a196601ed2ce54b665cafeca0347d42'; expect(ZeroEx.isValidSignature(dataHex, signature, validUnrelatedAddress)).to.be.false(); return expect( (zeroEx.exchange as any)._isValidSignatureUsingContractCallAsync( dataHex, signature, validUnrelatedAddress, ), ).to.become(false); }); it("should return false if the signature doesn't pertain to the dataHex & address", async () => { const wrongSignature = _.assign({}, signature, { v: 28 }); expect(ZeroEx.isValidSignature(dataHex, wrongSignature, address)).to.be.false(); return expect( (zeroEx.exchange as any)._isValidSignatureUsingContractCallAsync(dataHex, wrongSignature, address), ).to.become(false); }); it('should return true if the signature does pertain to the dataHex & address', async () => { const isValidSignatureLocal = ZeroEx.isValidSignature(dataHex, signature, address); expect(isValidSignatureLocal).to.be.true(); return expect( (zeroEx.exchange as any)._isValidSignatureUsingContractCallAsync(dataHex, signature, address), ).to.become(true); }); }); describe('#generateSalt', () => { it('generates different salts', () => { const equal = ZeroEx.generatePseudoRandomSalt().eq(ZeroEx.generatePseudoRandomSalt()); expect(equal).to.be.false(); }); it('generates salt in range [0..2^256)', () => { const salt = ZeroEx.generatePseudoRandomSalt(); expect(salt.greaterThanOrEqualTo(0)).to.be.true(); const twoPow256 = new BigNumber(2).pow(256); expect(salt.lessThan(twoPow256)).to.be.true(); }); }); describe('#isValidOrderHash', () => { it('returns false if the value is not a hex string', () => { const isValid = ZeroEx.isValidOrderHash('not a hex'); expect(isValid).to.be.false(); }); it('returns false if the length is wrong', () => { const isValid = ZeroEx.isValidOrderHash('0xdeadbeef'); expect(isValid).to.be.false(); }); it('returns true if order hash is correct', () => { const isValid = ZeroEx.isValidOrderHash('0x' + Array(65).join('0')); expect(isValid).to.be.true(); }); }); describe('#toUnitAmount', () => { it('should throw if invalid baseUnit amount supplied as argument', () => { const invalidBaseUnitAmount = new BigNumber(1000000000.4); const decimals = 6; expect(() => ZeroEx.toUnitAmount(invalidBaseUnitAmount, decimals)).to.throw( 'amount should be in baseUnits (no decimals), found value: 1000000000.4', ); }); it('Should return the expected unit amount for the decimals passed in', () => { const baseUnitAmount = new BigNumber(1000000000); const decimals = 6; const unitAmount = ZeroEx.toUnitAmount(baseUnitAmount, decimals); const expectedUnitAmount = new BigNumber(1000); expect(unitAmount).to.be.bignumber.equal(expectedUnitAmount); }); }); describe('#toBaseUnitAmount', () => { it('Should return the expected base unit amount for the decimals passed in', () => { const unitAmount = new BigNumber(1000); const decimals = 6; const baseUnitAmount = ZeroEx.toBaseUnitAmount(unitAmount, decimals); const expectedUnitAmount = new BigNumber(1000000000); expect(baseUnitAmount).to.be.bignumber.equal(expectedUnitAmount); }); it('should throw if unitAmount has more decimals then specified as the max decimal precision', () => { const unitAmount = new BigNumber(0.823091); const decimals = 5; expect(() => ZeroEx.toBaseUnitAmount(unitAmount, decimals)).to.throw( 'Invalid unit amount: 0.823091 - Too many decimal places', ); }); }); describe('#getOrderHashHex', () => { const expectedOrderHash = '0x39da987067a3c9e5f1617694f1301326ba8c8b0498ebef5df4863bed394e3c83'; const fakeExchangeContractAddress = '0xb69e673309512a9d726f87304c6984054f87a93b'; const order: Order = { maker: constants.NULL_ADDRESS, taker: constants.NULL_ADDRESS, feeRecipient: constants.NULL_ADDRESS, makerTokenAddress: constants.NULL_ADDRESS, takerTokenAddress: constants.NULL_ADDRESS, exchangeContractAddress: fakeExchangeContractAddress, salt: new BigNumber(0), makerFee: new BigNumber(0), takerFee: new BigNumber(0), makerTokenAmount: new BigNumber(0), takerTokenAmount: new BigNumber(0), expirationUnixTimestampSec: new BigNumber(0), }; it('calculates the order hash', async () => { const orderHash = ZeroEx.getOrderHashHex(order); expect(orderHash).to.be.equal(expectedOrderHash); }); it('throws a readable error message if taker format is invalid', async () => { const orderWithInvalidtakerFormat = { ...order, taker: (null as any) as string, }; const expectedErrorMessage = 'Order taker must be of type string. If you want anyone to be able to fill an order - pass ZeroEx.NULL_ADDRESS'; expect(() => ZeroEx.getOrderHashHex(orderWithInvalidtakerFormat)).to.throw(expectedErrorMessage); }); }); describe('#signOrderHashAsync', () => { let stubs: Sinon.SinonStub[] = []; let makerAddress: string; before(async () => { const availableAddreses = await zeroEx.getAvailableAddressesAsync(); makerAddress = availableAddreses[0]; }); afterEach(() => { // clean up any stubs after the test has completed _.each(stubs, s => s.restore()); stubs = []; }); it('Should return the correct ECSignature', async () => { const orderHash = '0x6927e990021d23b1eb7b8789f6a6feaf98fe104bb0cf8259421b79f9a34222b0'; const expectedECSignature = { v: 27, r: '0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33', s: '0x40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254', }; const ecSignature = await zeroEx.signOrderHashAsync( orderHash, makerAddress, SHOULD_ADD_PERSONAL_MESSAGE_PREFIX, ); expect(ecSignature).to.deep.equal(expectedECSignature); }); it('should return the correct ECSignature for signatureHex concatenated as R + S + V', async () => { const orderHash = '0x34decbedc118904df65f379a175bb39ca18209d6ce41d5ed549d54e6e0a95004'; const signature = '0x22109d11d79cb8bf96ed88625e1cd9558800c4073332a9a02857499883ee5ce3050aa3cc1f2c435e67e114cdce54b9527b4f50548342401bc5d2b77adbdacb021b'; const expectedECSignature = { v: 27, r: '0x22109d11d79cb8bf96ed88625e1cd9558800c4073332a9a02857499883ee5ce3', s: '0x050aa3cc1f2c435e67e114cdce54b9527b4f50548342401bc5d2b77adbdacb02', }; stubs = [ Sinon.stub((zeroEx as any)._web3Wrapper, 'signTransactionAsync').returns(Promise.resolve(signature)), Sinon.stub(ZeroEx, 'isValidSignature').returns(true), ]; const ecSignature = await zeroEx.signOrderHashAsync( orderHash, makerAddress, SHOULD_ADD_PERSONAL_MESSAGE_PREFIX, ); expect(ecSignature).to.deep.equal(expectedECSignature); }); it('should return the correct ECSignature for signatureHex concatenated as V + R + S', async () => { const orderHash = '0xc793e33ffded933b76f2f48d9aa3339fc090399d5e7f5dec8d3660f5480793f7'; const signature = '0x1bc80bedc6756722672753413efdd749b5adbd4fd552595f59c13427407ee9aee02dea66f25a608bbae457e020fb6decb763deb8b7192abab624997242da248960'; const expectedECSignature = { v: 27, r: '0xc80bedc6756722672753413efdd749b5adbd4fd552595f59c13427407ee9aee0', s: '0x2dea66f25a608bbae457e020fb6decb763deb8b7192abab624997242da248960', }; stubs = [ Sinon.stub((zeroEx as any)._web3Wrapper, 'signTransactionAsync').returns(Promise.resolve(signature)), Sinon.stub(ZeroEx, 'isValidSignature').returns(true), ]; const ecSignature = await zeroEx.signOrderHashAsync( orderHash, makerAddress, SHOULD_ADD_PERSONAL_MESSAGE_PREFIX, ); expect(ecSignature).to.deep.equal(expectedECSignature); }); }); describe('#awaitTransactionMinedAsync', () => { beforeEach(async () => { await blockchainLifecycle.startAsync(); }); afterEach(async () => { await blockchainLifecycle.revertAsync(); }); it('returns transaction receipt with decoded logs', async () => { const availableAddresses = await zeroEx.getAvailableAddressesAsync(); const coinbase = availableAddresses[0]; const tokens = await zeroEx.tokenRegistry.getTokensAsync(); const tokenUtils = new TokenUtils(tokens); const zrxTokenAddress = tokenUtils.getProtocolTokenOrThrow().address; const proxyAddress = zeroEx.proxy.getContractAddress(); const txHash = await zeroEx.token.setUnlimitedProxyAllowanceAsync(zrxTokenAddress, coinbase); const txReceiptWithDecodedLogs = await zeroEx.awaitTransactionMinedAsync(txHash); const log = txReceiptWithDecodedLogs.logs[0] as LogWithDecodedArgs; expect(log.event).to.be.equal(TokenEvents.Approval); expect(log.args._owner).to.be.equal(coinbase); expect(log.args._spender).to.be.equal(proxyAddress); expect(log.args._value).to.be.bignumber.equal(zeroEx.token.UNLIMITED_ALLOWANCE_IN_BASE_UNITS); }); }); describe('#config', () => { it('allows to specify exchange contract address', async () => { const zeroExConfig = { exchangeContractAddress: ZeroEx.NULL_ADDRESS, networkId: constants.TESTRPC_NETWORK_ID, }; const zeroExWithWrongExchangeAddress = new ZeroEx(web3.currentProvider, zeroExConfig); expect(zeroExWithWrongExchangeAddress.exchange.getContractAddress()).to.be.equal(ZeroEx.NULL_ADDRESS); }); it('allows to specify token registry token contract address', async () => { const zeroExConfig = { tokenRegistryContractAddress: ZeroEx.NULL_ADDRESS, networkId: constants.TESTRPC_NETWORK_ID, }; const zeroExWithWrongTokenRegistryAddress = new ZeroEx(web3.currentProvider, zeroExConfig); expect(zeroExWithWrongTokenRegistryAddress.tokenRegistry.getContractAddress()).to.be.equal( ZeroEx.NULL_ADDRESS, ); }); }); });