import { Order } from '@0xproject/types'; import { BigNumber } from '@0xproject/utils'; import * as chai from 'chai'; import 'mocha'; import { orderHashUtils } from '../src'; import { constants } from '../src/constants'; import { chaiSetup } from './utils/chai_setup'; chaiSetup.configure(); const expect = chai.expect; describe('Order hashing', () => { describe('#getOrderHashHex', () => { const expectedOrderHash = '0x434c6b41e2fb6dfcfe1b45c4492fb03700798e9c1afc6f801ba6203f948c1fa7'; const fakeExchangeContractAddress = '0x1dc4c1cefef38a777b15aa20260a54e584b16c48'; const order: Order = { makerAddress: constants.NULL_ADDRESS, takerAddress: constants.NULL_ADDRESS, senderAddress: constants.NULL_ADDRESS, feeRecipientAddress: constants.NULL_ADDRESS, makerAssetData: constants.NULL_ADDRESS, takerAssetData: constants.NULL_ADDRESS, exchangeAddress: fakeExchangeContractAddress, salt: new BigNumber(0), makerFee: new BigNumber(0), takerFee: new BigNumber(0), makerAssetAmount: new BigNumber(0), takerAssetAmount: new BigNumber(0), expirationTimeSeconds: new BigNumber(0), }; it('calculates the order hash', async () => { const orderHash = orderHashUtils.getOrderHashHex(order); expect(orderHash).to.be.equal(expectedOrderHash); }); it('calculates the order hash if amounts are strings', async () => { // It's common for developers using javascript to provide the amounts // as strings. Since we eventually toString() the BigNumber // before encoding we should result in the same orderHash in this scenario // tslint:disable-next-line:no-unnecessary-type-assertion const orderHash = orderHashUtils.getOrderHashHex({ ...order, makerAssetAmount: '0', takerAssetAmount: '0', makerFee: '0', takerFee: '0', } as any); expect(orderHash).to.be.equal(expectedOrderHash); }); it('throws a readable error message if taker format is invalid', async () => { const orderWithInvalidtakerFormat = { ...order, takerAddress: (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(() => orderHashUtils.getOrderHashHex(orderWithInvalidtakerFormat)).to.throw(expectedErrorMessage); }); }); describe('#isValidOrderHash', () => { it('returns false if the value is not a hex string', () => { const isValid = orderHashUtils.isValidOrderHash('not a hex'); expect(isValid).to.be.false(); }); it('returns false if the length is wrong', () => { const isValid = orderHashUtils.isValidOrderHash('0xdeadbeef'); expect(isValid).to.be.false(); }); it('returns true if order hash is correct', () => { const orderHashLength = 65; const isValid = orderHashUtils.isValidOrderHash('0x' + Array(orderHashLength).join('0')); expect(isValid).to.be.true(); }); }); });