import * as _ from 'lodash'; import * as chai from 'chai'; import 'mocha'; import * as BigNumber from 'bignumber.js'; import ChaiBigNumber = require('chai-bignumber'); import {ZeroEx} from '../src/0x.js'; import {constants} from '../src/utils/constants'; // Use BigNumber chai add-on chai.use(ChaiBigNumber()); const expect = chai.expect; describe('ZeroEx library', () => { describe('#getOrderHash', () => { const expectedOrderHash = '0x103a5e97dab5dbeb8f385636f86a7d1e458a7ccbe1bd194727f0b2f85ab116c7'; it('defaults takerAddress to NULL address', () => { const orderHash = ZeroEx.getOrderHashHex( constants.NULL_ADDRESS, constants.NULL_ADDRESS, '', constants.NULL_ADDRESS, constants.NULL_ADDRESS, constants.NULL_ADDRESS, new BigNumber(0), new BigNumber(0), new BigNumber(0), new BigNumber(0), new BigNumber(0), new BigNumber(0), ); expect(orderHash).to.be.equal(expectedOrderHash); }); it('calculates the order hash', () => { const orderHash = ZeroEx.getOrderHashHex( constants.NULL_ADDRESS, constants.NULL_ADDRESS, constants.NULL_ADDRESS, constants.NULL_ADDRESS, constants.NULL_ADDRESS, constants.NULL_ADDRESS, new BigNumber(0), new BigNumber(0), new BigNumber(0), new BigNumber(0), new BigNumber(0), new BigNumber(0), ); expect(orderHash).to.be.equal(expectedOrderHash); }); }); describe('#isValidSignature', () => { // This test data was borrowed from the JSON RPC documentation // Source: https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_sign const data = '0xdeadbeaf'; const signature = { v: 27, r: '0xa3f20717a250c2b0b729b7e5becbff67fdaef7e0699da4de7ca5895b02a170a1', s: '0x2d887fd3b17bfdce3481f10bea41f45ba9f709d39ce8325427b57afcfc994cee', }; const address = '0x9b2055d370f73ec7d8a03e965129118dc8f5bf83'; describe('should throw if passed a malformed signature', () => { it('malformed v', () => { const malformedSignature = { v: 34, r: signature.r, s: signature.s, }; expect(() => ZeroEx.isValidSignature(data, malformedSignature, address)).to.throw(); }); it('r lacks 0x prefix', () => { const malformedR = signature.r.replace('0x', ''); const malformedSignature = { v: signature.v, r: malformedR, s: signature.s, }; expect(() => ZeroEx.isValidSignature(data, malformedSignature, address)).to.throw(); }); 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.isValidSignature(data, malformedSignature, address)).to.throw(); }); it('s is not hex', () => { const malformedS = signature.s.replace('0', 'z'); const malformedSignature = { v: signature.v, r: signature.r, s: malformedS, }; expect(() => ZeroEx.isValidSignature(data, malformedSignature, address)).to.throw(); }); }); it('should return false if the data doesn\'t pertain to the signature & address', () => { const isValid = ZeroEx.isValidSignature('0x0', signature, address); expect(isValid).to.be.false; }); it('should return false if the address doesn\'t pertain to the signature & data', () => { const validUnrelatedAddress = '0x8b0292B11a196601eD2ce54B665CaFEca0347D42'; const isValid = ZeroEx.isValidSignature(data, signature, validUnrelatedAddress); expect(isValid).to.be.false; }); it('should return false if the signature doesn\'t pertain to the data & address', () => { const wrongSignature = _.assign({}, signature, {v: 28}); const isValid = ZeroEx.isValidSignature(data, wrongSignature, address); expect(isValid).to.be.false; }); it('should return true if the signature does pertain to the data & address', () => { const isValid = ZeroEx.isValidSignature(data, signature, address); expect(isValid).to.be.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 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); }); }); });