import { BlockchainLifecycle } from '@0x/dev-utils'; import { assetDataUtils, orderHashUtils } from '@0x/order-utils'; import { SignedOrder } from '@0x/types'; import { BigNumber } from '@0x/utils'; import * as chai from 'chai'; import { TestConstantsContract } from '../../generated-wrappers/test_constants'; import { TestLibsContract } from '../../generated-wrappers/test_libs'; import { artifacts } from '../../src/artifacts'; import { addressUtils } from '../utils/address_utils'; import { chaiSetup } from '../utils/chai_setup'; import { constants } from '../utils/constants'; import { OrderFactory } from '../utils/order_factory'; import { provider, txDefaults, web3Wrapper } from '../utils/web3_wrapper'; chaiSetup.configure(); const expect = chai.expect; const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper); describe('Exchange libs', () => { let signedOrder: SignedOrder; let orderFactory: OrderFactory; let libs: TestLibsContract; let testConstants: TestConstantsContract; before(async () => { await blockchainLifecycle.startAsync(); }); after(async () => { await blockchainLifecycle.revertAsync(); }); before(async () => { const accounts = await web3Wrapper.getAvailableAddressesAsync(); const makerAddress = accounts[0]; libs = await TestLibsContract.deployFrom0xArtifactAsync(artifacts.TestLibs, provider, txDefaults); testConstants = await TestConstantsContract.deployFrom0xArtifactAsync( artifacts.TestConstants, provider, txDefaults, ); const defaultOrderParams = { ...constants.STATIC_ORDER_PARAMS, exchangeAddress: libs.address, makerAddress, feeRecipientAddress: addressUtils.generatePseudoRandomAddress(), makerAssetData: assetDataUtils.encodeERC20AssetData(addressUtils.generatePseudoRandomAddress()), takerAssetData: assetDataUtils.encodeERC20AssetData(addressUtils.generatePseudoRandomAddress()), }; const privateKey = constants.TESTRPC_PRIVATE_KEYS[accounts.indexOf(makerAddress)]; orderFactory = new OrderFactory(privateKey, defaultOrderParams); }); beforeEach(async () => { await blockchainLifecycle.startAsync(); }); afterEach(async () => { await blockchainLifecycle.revertAsync(); }); describe('LibConstants', () => { describe('ZRX_ASSET_DATA', () => { it('should have the correct ZRX_ASSET_DATA', async () => { const isValid = await testConstants.assertValidZrxAssetData.callAsync(); expect(isValid).to.be.equal(true); }); }); }); // Note(albrow): These tests are designed to be supplemental to the // combinatorial tests in test/exchange/internal. They test specific edge // cases that are not covered by the combinatorial tests. describe('LibMath', () => { describe('isRoundingError', () => { it('should return true if there is a rounding error of 0.1%', async () => { const numerator = new BigNumber(20); const denominator = new BigNumber(999); const target = new BigNumber(50); // rounding error = ((20*50/999) - floor(20*50/999)) / (20*50/999) = 0.1% const isRoundingError = await libs.publicIsRoundingErrorFloor.callAsync(numerator, denominator, target); expect(isRoundingError).to.be.true(); }); it('should return false if there is a rounding of 0.09%', async () => { const numerator = new BigNumber(20); const denominator = new BigNumber(9991); const target = new BigNumber(500); // rounding error = ((20*500/9991) - floor(20*500/9991)) / (20*500/9991) = 0.09% const isRoundingError = await libs.publicIsRoundingErrorFloor.callAsync(numerator, denominator, target); expect(isRoundingError).to.be.false(); }); it('should return true if there is a rounding error of 0.11%', async () => { const numerator = new BigNumber(20); const denominator = new BigNumber(9989); const target = new BigNumber(500); // rounding error = ((20*500/9989) - floor(20*500/9989)) / (20*500/9989) = 0.011% const isRoundingError = await libs.publicIsRoundingErrorFloor.callAsync(numerator, denominator, target); expect(isRoundingError).to.be.true(); }); }); describe('isRoundingErrorCeil', () => { it('should return true if there is a rounding error of 0.1%', async () => { const numerator = new BigNumber(20); const denominator = new BigNumber(1001); const target = new BigNumber(50); // rounding error = (ceil(20*50/1001) - (20*50/1001)) / (20*50/1001) = 0.1% const isRoundingError = await libs.publicIsRoundingErrorCeil.callAsync(numerator, denominator, target); expect(isRoundingError).to.be.true(); }); it('should return false if there is a rounding of 0.09%', async () => { const numerator = new BigNumber(20); const denominator = new BigNumber(10009); const target = new BigNumber(500); // rounding error = (ceil(20*500/10009) - (20*500/10009)) / (20*500/10009) = 0.09% const isRoundingError = await libs.publicIsRoundingErrorCeil.callAsync(numerator, denominator, target); expect(isRoundingError).to.be.false(); }); it('should return true if there is a rounding error of 0.11%', async () => { const numerator = new BigNumber(20); const denominator = new BigNumber(10011); const target = new BigNumber(500); // rounding error = (ceil(20*500/10011) - (20*500/10011)) / (20*500/10011) = 0.11% const isRoundingError = await libs.publicIsRoundingErrorCeil.callAsync(numerator, denominator, target); expect(isRoundingError).to.be.true(); }); }); }); describe('LibOrder', () => { describe('getOrderHash', () => { it('should output the correct orderHash', async () => { signedOrder = await orderFactory.newSignedOrderAsync(); const orderHashHex = await libs.publicGetOrderHash.callAsync(signedOrder); expect(orderHashUtils.getOrderHashHex(signedOrder)).to.be.equal(orderHashHex); }); }); }); });