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+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/ts/0x.js';
+import {constants} from '../src/ts/utils/constants';
+
+// Use BigNumber chai add-on
+chai.use(ChaiBigNumber());
+const expect = chai.expect;
+
+describe('ZeroEx library', () => {
+ describe('#getOrderHash', () => {
+ const ORDER_HASH = '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(ORDER_HASH);
+ });
+ 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(ORDER_HASH);
+ });
+ });
+ 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);
+ });
+ });
+});