import { ContractWrappers } from '@0xproject/contract-wrappers'; import { BlockchainLifecycle } from '@0xproject/dev-utils'; import { BigNumber } from '@0xproject/utils'; import * as chai from 'chai'; import * as _ from 'lodash'; import 'mocha'; import { ApprovalContractEventArgs, LogWithDecodedArgs, TokenEvents, ZeroEx } from '../src'; import { chaiSetup } from './utils/chai_setup'; import { constants } from './utils/constants'; import { TokenUtils } from './utils/token_utils'; import { provider, web3Wrapper } from './utils/web3_wrapper'; const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper); chaiSetup.configure(); const expect = chai.expect; describe('ZeroEx library', () => { let zeroEx: ZeroEx; before(async () => { const config = { networkId: constants.TESTRPC_NETWORK_ID, }; zeroEx = new ZeroEx(provider, 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(); // Add property to newProvider so that we can differentiate it from old provider (provider as any).zeroExTestId = 1; zeroEx.setProvider(provider, 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 zeroExContract/web3Wrapper instances return the updated provider const nestedWeb3WrapperProvider = ((zeroEx as any)._contractWrappers as ContractWrappers).getProvider(); expect((nestedWeb3WrapperProvider as any).zeroExTestId).to.be.a('number'); const exchangeWeb3WrapperProvider = (zeroEx.exchange as any)._web3Wrapper.getProvider(); expect(exchangeWeb3WrapperProvider.zeroExTestId).to.be.a('number'); const tokenRegistryWeb3WrapperProvider = (zeroEx.tokenRegistry as any)._web3Wrapper.getProvider(); 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 () => { 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'; 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 }); 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 () => { return expect( (zeroEx.exchange as any)._isValidSignatureUsingContractCallAsync(dataHex, signature, address), ).to.become(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('#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); // tslint:disable-next-line:no-unnecessary-type-assertion 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(provider, 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(provider, zeroExConfig); expect(zeroExWithWrongTokenRegistryAddress.tokenRegistry.getContractAddress()).to.be.equal( ZeroEx.NULL_ADDRESS, ); }); }); });