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import 'mocha';
import * as chai from 'chai';
import {web3Factory} from './utils/web3_factory';
import {ZeroEx} from '../src/0x.js';
import promisify = require('es6-promisify');
import * as _ from 'lodash';
import {BlockchainLifecycle} from './utils/blockchain_lifecycle';
import * as BigNumber from 'bignumber.js';
import {createSignedOrder} from './utils/order';
import {Token} from '../src/types';
import * as Web3 from 'web3';
const expect = chai.expect;
const blockchainLifecycle = new BlockchainLifecycle();
describe('ExchangeWrapper', () => {
let zeroEx: ZeroEx;
let userAddresses: string[];
let web3: Web3;
before(async () => {
web3 = web3Factory.create();
zeroEx = new ZeroEx(web3);
userAddresses = await promisify(web3.eth.getAccounts)();
});
beforeEach(async () => {
await blockchainLifecycle.startAsync();
});
afterEach(async () => {
await blockchainLifecycle.revertAsync();
});
describe('#isValidSignatureAsync', () => {
// The Exchange smart contract `isValidSignature` method only validates orderHashes and assumes
// the length of the data is exactly 32 bytes. Thus for these tests, we use data of this size.
const dataHex = '0x6927e990021d23b1eb7b8789f6a6feaf98fe104bb0cf8259421b79f9a34222b0';
const signature = {
v: 27,
r: '0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33',
s: '0x40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254',
};
const address = '0x5409ed021d9299bf6814279a6a1411a7e866a631';
describe('should throw if passed a malformed signature', () => {
it('malformed v', async () => {
const malformedSignature = {
v: 34,
r: signature.r,
s: signature.s,
};
expect(zeroEx.exchange.isValidSignatureAsync(dataHex, malformedSignature, address))
.to.be.rejected;
});
it('r lacks 0x prefix', () => {
const malformedR = signature.r.replace('0x', '');
const malformedSignature = {
v: signature.v,
r: malformedR,
s: signature.s,
};
expect(zeroEx.exchange.isValidSignatureAsync(dataHex, malformedSignature, address))
.to.be.rejected;
});
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.exchange.isValidSignatureAsync(dataHex, malformedSignature, address))
.to.be.rejected;
});
it('s is not hex', () => {
const malformedS = signature.s.replace('0', 'z');
const malformedSignature = {
v: signature.v,
r: signature.r,
s: malformedS,
};
expect(zeroEx.exchange.isValidSignatureAsync(dataHex, malformedSignature, address))
.to.be.rejected;
});
});
it('should return false if the data doesn\'t pertain to the signature & address', async () => {
const isValid = await zeroEx.exchange.isValidSignatureAsync('0x0', signature, address);
expect(isValid).to.be.false;
});
it('should return false if the address doesn\'t pertain to the signature & dataHex', async () => {
const validUnrelatedAddress = '0x8b0292B11a196601eD2ce54B665CaFEca0347D42';
const isValid = await zeroEx.exchange.isValidSignatureAsync(dataHex, signature, validUnrelatedAddress);
expect(isValid).to.be.false;
});
it('should return false if the signature doesn\'t pertain to the dataHex & address', async () => {
const wrongSignature = Object.assign({}, signature, {v: 28});
const isValid = await zeroEx.exchange.isValidSignatureAsync(dataHex, wrongSignature, address);
expect(isValid).to.be.false;
});
it('should return true if the signature does pertain to the dataHex & address', async () => {
const isValid = await zeroEx.exchange.isValidSignatureAsync(dataHex, signature, address);
expect(isValid).to.be.true;
});
});
describe('#fillOrderAsync', () => {
let tokens: Token[];
const giveMeTokens = async (toAddress: string,
amountInBaseUnits: BigNumber.BigNumber|number,
symbol: string) => {
const amount = _.isNumber(amountInBaseUnits) ? new BigNumber(amountInBaseUnits) : amountInBaseUnits;
const token = _.find(tokens, {symbol});
if (_.isUndefined(token)) {
throw new Error(`Token ${symbol} not found`);
} else {
await zeroEx.token.transferAsync(token.address, userAddresses[0], toAddress, amount);
}
};
before('fetch tokens', async () => {
tokens = await zeroEx.tokenRegistry.getTokensAsync();
});
describe('failed fills', () => {
it('should throw when the fill amount is zero', async () => {
const signedOrder = await createSignedOrder(zeroEx, tokens, 5, 'MLN', 5, 'GNT');
const fillAmount = new BigNumber(0);
expect(zeroEx.exchange.fillOrderAsync(signedOrder, fillAmount))
.to.be.rejectedWith('This order has already been filled or cancelled');
});
});
describe('successful fills', () => {
afterEach('reset default account', () => {
web3.eth.defaultAccount = userAddresses[0];
});
it('should fill the valid order', async () => {
const signedOrder = await createSignedOrder(zeroEx, tokens, 5, 'MLN', 5, 'GNT');
await giveMeTokens(userAddresses[0], 5, 'GNT');
const fillAmount = new BigNumber(0);
web3.eth.defaultAccount = userAddresses[1];
expect(zeroEx.exchange.fillOrderAsync(signedOrder, fillAmount)).to.become(undefined);
});
});
});
});
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