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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);
});
});
});
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