import {ZeroEx} from '0x.js';
import {BigNumber} from 'bignumber.js';
import * as chai from 'chai';
import ethUtil = require('ethereumjs-util');
import * as Web3 from 'web3';
import {Artifacts} from '../../../util/artifacts';
import {Balances} from '../../../util/balances';
import {constants} from '../../../util/constants';
import {crypto} from '../../../util/crypto';
import {ExchangeWrapper} from '../../../util/exchange_wrapper';
import {Order} from '../../../util/order';
import {OrderFactory} from '../../../util/order_factory';
import {BalancesByOwner, ContractInstance, ExchangeContractErrs} from '../../../util/types';
import {chaiSetup} from '../utils/chai_setup';
chaiSetup.configure();
const expect = chai.expect;
const {
Exchange,
TokenTransferProxy,
DummyToken,
TokenRegistry,
MaliciousToken,
} = new Artifacts(artifacts);
// In order to benefit from type-safety, we re-assign the global web3 instance injected by Truffle
// with type `any` to a variable of type `Web3`.
const web3: Web3 = (global as any).web3;
contract('Exchange', (accounts: string[]) => {
const maker = accounts[0];
const tokenOwner = accounts[0];
const taker = accounts[1] || accounts[accounts.length - 1];
const feeRecipient = accounts[2] || accounts[accounts.length - 1];
const INITIAL_BALANCE = ZeroEx.toBaseUnitAmount(new BigNumber(10000), 18);
const INITIAL_ALLOWANCE = ZeroEx.toBaseUnitAmount(new BigNumber(10000), 18);
let rep: ContractInstance;
let dgd: ContractInstance;
let zrx: ContractInstance;
let exchange: ContractInstance;
let tokenRegistry: ContractInstance;
let order: Order;
let balances: BalancesByOwner;
let exWrapper: ExchangeWrapper;
let dmyBalances: Balances;
let orderFactory: OrderFactory;
let zeroEx: ZeroEx;
before(async () => {
[tokenRegistry, exchange] = await Promise.all([
TokenRegistry.deployed(),
Exchange.deployed(),
]);
exWrapper = new ExchangeWrapper(exchange);
zeroEx = new ZeroEx(web3.currentProvider, {
exchangeContractAddress: exchange.address,
});
const [repAddress, dgdAddress, zrxAddress] = await Promise.all([
tokenRegistry.getTokenAddressBySymbol('REP'),
tokenRegistry.getTokenAddressBySymbol('DGD'),
tokenRegistry.getTokenAddressBySymbol('ZRX'),
]);
const defaultOrderParams = {
exchangeContractAddress: Exchange.address,
maker,
feeRecipient,
makerToken: repAddress,
takerToken: dgdAddress,
makerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(100), 18),
takerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(200), 18),
makerFee: ZeroEx.toBaseUnitAmount(new BigNumber(1), 18),
takerFee: ZeroEx.toBaseUnitAmount(new BigNumber(1), 18),
};
orderFactory = new OrderFactory(defaultOrderParams);
[rep, dgd, zrx] = await Promise.all([
DummyToken.at(repAddress),
DummyToken.at(dgdAddress),
DummyToken.at(zrxAddress),
]);
dmyBalances = new Balances([rep, dgd, zrx], [maker, taker, feeRecipient]);
await Promise.all([
rep.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {from: maker}),
rep.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {from: taker}),
rep.setBalance(maker, INITIAL_BALANCE, {from: tokenOwner}),
rep.setBalance(taker, INITIAL_BALANCE, {from: tokenOwner}),
dgd.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {from: maker}),
dgd.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {from: taker}),
dgd.setBalance(maker, INITIAL_BALANCE, {from: tokenOwner}),
dgd.setBalance(taker, INITIAL_BALANCE, {from: tokenOwner}),
zrx.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {from: maker}),
zrx.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {from: taker}),
zrx.setBalance(maker, INITIAL_BALANCE, {from: tokenOwner}),
zrx.setBalance(taker, INITIAL_BALANCE, {from: tokenOwner}),
]);
});
describe('internal functions', () => {
it('should include transferViaTokenTransferProxy', () => {
expect(exchange.transferViaTokenTransferProxy).to.be.undefined();
});
it('should include isTransferable', () => {
expect(exchange.isTransferable).to.be.undefined();
});
it('should include getBalance', () => {
expect(exchange.getBalance).to.be.undefined();
});
it('should include getAllowance', () => {
expect(exchange.getAllowance).to.be.undefined();
});
});
describe('fillOrder', () => {
beforeEach(async () => {
balances = await dmyBalances.getAsync();
order = await orderFactory.newSignedOrderAsync();
});
it('should create an unfillable order', async () => {
order = await orderFactory.newSignedOrderAsync({
makerTokenAmount: new BigNumber(1001),
takerTokenAmount: new BigNumber(3),
});
const filledTakerTokenAmountBefore =
await zeroEx.exchange.getFilledTakerAmountAsync(order.params.orderHashHex);
expect(filledTakerTokenAmountBefore).to.be.bignumber.equal(0);
const fillTakerTokenAmount1 = new BigNumber(2);
await exWrapper.fillOrderAsync(order, taker, {fillTakerTokenAmount: fillTakerTokenAmount1});
const filledTakerTokenAmountAfter1 =
await zeroEx.exchange.getFilledTakerAmountAsync(order.params.orderHashHex);
expect(filledTakerTokenAmountAfter1).to.be.bignumber.equal(fillTakerTokenAmount1);
const fillTakerTokenAmount2 = new BigNumber(1);
await exWrapper.fillOrderAsync(order, taker, {fillTakerTokenAmount: fillTakerTokenAmount2});
const filledTakerTokenAmountAfter2 =
await zeroEx.exchange.getFilledTakerAmountAsync(order.params.orderHashHex);
expect(filledTakerTokenAmountAfter2).to.be.bignumber.equal(filledTakerTokenAmountAfter1);
});
it('should transfer the correct amounts when makerTokenAmount === takerTokenAmount', async () => {
order = await orderFactory.newSignedOrderAsync({
makerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(100), 18),
takerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(100), 18),
});
const filledTakerTokenAmountBefore =
await zeroEx.exchange.getFilledTakerAmountAsync(order.params.orderHashHex);
expect(filledTakerTokenAmountBefore).to.be.bignumber.equal(0);
const fillTakerTokenAmount = order.params.takerTokenAmount.div(2);
await exWrapper.fillOrderAsync(order, taker, {fillTakerTokenAmount});
const filledTakerTokenAmountAfter =
await zeroEx.exchange.getFilledTakerAmountAsync(order.params.orderHashHex);
expect(filledTakerTokenAmountAfter).to.be.bignumber.equal(fillTakerTokenAmount);
const newBalances = await dmyBalances.getAsync();
const fillMakerTokenAmount = fillTakerTokenAmount
.times(order.params.makerTokenAmount)
.dividedToIntegerBy(order.params.takerTokenAmount);
const paidMakerFee = order.params.makerFee
.times(fillMakerTokenAmount)
.dividedToIntegerBy(order.params.makerTokenAmount);
const paidTakerFee = order.params.takerFee
.times(fillMakerTokenAmount)
.dividedToIntegerBy(order.params.makerTokenAmount);
expect(newBalances[maker][order.params.makerToken])
.to.be.bignumber.equal(balances[maker][order.params.makerToken].minus(fillMakerTokenAmount));
expect(newBalances[maker][order.params.takerToken])
.to.be.bignumber.equal(balances[maker][order.params.takerToken].add(fillTakerTokenAmount));
expect(newBalances[maker][zrx.address]).to.be.bignumber
.equal(balances[maker][zrx.address].minus(paidMakerFee));
expect(newBalances[taker][order.params.takerToken])
.to.be.bignumber.equal(balances[taker][order.params.takerToken].minus(fillTakerTokenAmount));
expect(newBalances[taker][order.params.makerToken])
.to.be.bignumber.equal(balances[taker][order.params.makerToken].add(fillMakerTokenAmount));
expect(newBalances[taker][zrx.address]).to.be.bignumber
.equal(balances[taker][zrx.address].minus(paidTakerFee));
expect(newBalances[feeRecipient][zrx.address])
.to.be.bignumber.equal(balances[feeRecipient][zrx.address].add(paidMakerFee.add(paidTakerFee)));
});
it('should transfer the correct amounts when makerTokenAmount > takerTokenAmount', async () => {
order = await orderFactory.newSignedOrderAsync({
makerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(200), 18),
takerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(100), 18),
});
const filledTakerTokenAmountBefore =
await zeroEx.exchange.getFilledTakerAmountAsync(order.params.orderHashHex);
expect(filledTakerTokenAmountBefore).to.be.bignumber.equal(0);
const fillTakerTokenAmount = order.params.takerTokenAmount.div(2);
await exWrapper.fillOrderAsync(order, taker, {fillTakerTokenAmount});
const filledTakerTokenAmountAfter =
await zeroEx.exchange.getFilledTakerAmountAsync(order.params.orderHashHex);
expect(filledTakerTokenAmountAfter).to.be.bignumber.equal(fillTakerTokenAmount);
const newBalances = await dmyBalances.getAsync();
const fillMakerTokenAmount = fillTakerTokenAmount
.times(order.params.makerTokenAmount)
.dividedToIntegerBy(order.params.takerTokenAmount);
const paidMakerFee = order.params.makerFee
.times(fillMakerTokenAmount)
.dividedToIntegerBy(order.params.makerTokenAmount);
const paidTakerFee = order.params.takerFee
.times(fillMakerTokenAmount)
.dividedToIntegerBy(order.params.makerTokenAmount);
expect(newBalances[maker][order.params.makerToken])
.to.be.bignumber.equal(balances[maker][order.params.makerToken].minus(fillMakerTokenAmount));
expect(newBalances[maker][order.params.takerToken])
.to.be.bignumber.equal(balances[maker][order.params.takerToken].add(fillTakerTokenAmount));
expect(newBalances[maker][zrx.address]).to.be.bignumber
.equal(balances[maker][zrx.address].minus(paidMakerFee));
expect(newBalances[taker][order.params.takerToken])
.to.be.bignumber.equal(balances[taker][order.params.takerToken].minus(fillTakerTokenAmount));
expect(newBalances[taker][order.params.makerToken])
.to.be.bignumber.equal(balances[taker][order.params.makerToken].add(fillMakerTokenAmount));
expect(newBalances[taker][zrx.address]).to.be.bignumber
.equal(balances[taker][zrx.address].minus(paidTakerFee));
expect(newBalances[feeRecipient][zrx.address])
.to.be.bignumber.equal(balances[feeRecipient][zrx.address].add(paidMakerFee.add(paidTakerFee)));
});
it('should transfer the correct amounts when makerTokenAmount < takerTokenAmount', async () => {
order = await orderFactory.newSignedOrderAsync({
makerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(100), 18),
takerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(200), 18),
});
const filledTakerTokenAmountBefore =
await zeroEx.exchange.getFilledTakerAmountAsync(order.params.orderHashHex);
expect(filledTakerTokenAmountBefore).to.be.bignumber.equal(0);
const fillTakerTokenAmount = order.params.takerTokenAmount.div(2);
await exWrapper.fillOrderAsync(order, taker, {fillTakerTokenAmount});
const filledTakerTokenAmountAfter =
await zeroEx.exchange.getFilledTakerAmountAsync(order.params.orderHashHex);
expect(filledTakerTokenAmountAfter).to.be.bignumber.equal(fillTakerTokenAmount);
const newBalances = await dmyBalances.getAsync();
const fillMakerTokenAmount = fillTakerTokenAmount
.times(order.params.makerTokenAmount)
.dividedToIntegerBy(order.params.takerTokenAmount);
const paidMakerFee = order.params.makerFee
.times(fillMakerTokenAmount)
.dividedToIntegerBy(order.params.makerTokenAmount);
const paidTakerFee = order.params.takerFee
.times(fillMakerTokenAmount)
.dividedToIntegerBy(order.params.makerTokenAmount);
expect(newBalances[maker][order.params.makerToken])
.to.be.bignumber.equal(balances[maker][order.params.makerToken].minus(fillMakerTokenAmount));
expect(newBalances[maker][order.params.takerToken])
.to.be.bignumber.equal(balances[maker][order.params.takerToken].add(fillTakerTokenAmount));
expect(newBalances[maker][zrx.address]).to.be.bignumber
.equal(balances[maker][zrx.address].minus(paidMakerFee));
expect(newBalances[taker][order.params.takerToken])
.to.be.bignumber.equal(balances[taker][order.params.takerToken].minus(fillTakerTokenAmount));
expect(newBalances[taker][order.params.makerToken])
.to.be.bignumber.equal(balances[taker][order.params.makerToken].add(fillMakerTokenAmount));
expect(newBalances[taker][zrx.address]).to.be.bignumber
.equal(balances[taker][zrx.address].minus(paidTakerFee));
expect(newBalances[feeRecipient][zrx.address])
.to.be.bignumber.equal(balances[feeRecipient][zrx.address].add(paidMakerFee.add(paidTakerFee)));
});
it('should transfer the correct amounts when taker is specified and order is claimed by taker', async () => {
order = await orderFactory.newSignedOrderAsync({
taker,
makerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(100), 18),
takerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(200), 18),
});
const filledTakerTokenAmountBefore =
await zeroEx.exchange.getFilledTakerAmountAsync(order.params.orderHashHex);
expect(filledTakerTokenAmountBefore).to.be.bignumber.equal(0);
const fillTakerTokenAmount = order.params.takerTokenAmount.div(2);
await exWrapper.fillOrderAsync(order, taker, {fillTakerTokenAmount});
const filledTakerTokenAmountAfter =
await zeroEx.exchange.getFilledTakerAmountAsync(order.params.orderHashHex);
const expectedFillAmountTAfter = fillTakerTokenAmount.add(filledTakerTokenAmountBefore);
expect(filledTakerTokenAmountAfter).to.be.bignumber.equal(expectedFillAmountTAfter);
const newBalances = await dmyBalances.getAsync();
const fillMakerTokenAmount = fillTakerTokenAmount
.times(order.params.makerTokenAmount)
.dividedToIntegerBy(order.params.takerTokenAmount);
const paidMakerFee = order.params.makerFee
.times(fillMakerTokenAmount)
.dividedToIntegerBy(order.params.makerTokenAmount);
const paidTakerFee = order.params.takerFee
.times(fillMakerTokenAmount)
.dividedToIntegerBy(order.params.makerTokenAmount);
expect(newBalances[maker][order.params.makerToken])
.to.be.bignumber.equal(balances[maker][order.params.makerToken].minus(fillMakerTokenAmount));
expect(newBalances[maker][order.params.takerToken])
.to.be.bignumber.equal(balances[maker][order.params.takerToken].add(fillTakerTokenAmount));
expect(newBalances[maker][zrx.address]).to.be.bignumber
.equal(balances[maker][zrx.address].minus(paidMakerFee));
expect(newBalances[taker][order.params.takerToken])
.to.be.bignumber.equal(balances[taker][order.params.takerToken].minus(fillTakerTokenAmount));
expect(newBalances[taker][order.params.makerToken])
.to.be.bignumber.equal(balances[taker][order.params.makerToken].add(fillMakerTokenAmount));
expect(newBalances[taker][zrx.address]).to.be.bignumber
.equal(balances[taker][zrx.address].minus(paidTakerFee));
expect(newBalances[feeRecipient][zrx.address])
.to.be.bignumber.equal(balances[feeRecipient][zrx.address].add(paidMakerFee.add(paidTakerFee)));
});
it('should fill remaining value if fillTakerTokenAmount > remaining takerTokenAmount', async () => {
const fillTakerTokenAmount = order.params.takerTokenAmount.div(2);
await exWrapper.fillOrderAsync(order, taker, {fillTakerTokenAmount});
const res = await exWrapper.fillOrderAsync(order, taker,
{fillTakerTokenAmount: order.params.takerTokenAmount});
expect(res.logs[0].args.filledTakerTokenAmount)
.to.be.bignumber.equal(order.params.takerTokenAmount.minus(fillTakerTokenAmount));
const newBalances = await dmyBalances.getAsync();
expect(newBalances[maker][order.params.makerToken])
.to.be.bignumber.equal(balances[maker][order.params.makerToken].minus(order.params.makerTokenAmount));
expect(newBalances[maker][order.params.takerToken])
.to.be.bignumber.equal(balances[maker][order.params.takerToken].add(order.params.takerTokenAmount));
expect(newBalances[maker][zrx.address])
.to.be.bignumber.equal(balances[maker][zrx.address].minus(order.params.makerFee));
expect(newBalances[taker][order.params.takerToken])
.to.be.bignumber.equal(balances[taker][order.params.takerToken].minus(order.params.takerTokenAmount));
expect(newBalances[taker][order.params.makerToken])
.to.be.bignumber.equal(balances[taker][order.params.makerToken].add(order.params.makerTokenAmount));
expect(newBalances[taker][zrx.address])
.to.be.bignumber.equal(balances[taker][zrx.address].minus(order.params.takerFee));
expect(newBalances[feeRecipient][zrx.address])
.to.be.bignumber.equal(
balances[feeRecipient][zrx.address].add(order.params.makerFee.add(order.params.takerFee)),
);
});
it('should log 1 event with the correct arguments when order has a feeRecipient', async () => {
const divisor = 2;
const res = await exWrapper.fillOrderAsync(order, taker,
{fillTakerTokenAmount: order.params.takerTokenAmount.div(divisor)});
expect(res.logs).to.have.length(1);
const logArgs = res.logs[0].args;
const expectedFilledMakerTokenAmount = order.params.makerTokenAmount.div(divisor);
const expectedFilledTakerTokenAmount = order.params.takerTokenAmount.div(divisor);
const expectedFeeMPaid = order.params.makerFee.div(divisor);
const expectedFeeTPaid = order.params.takerFee.div(divisor);
const tokensHashBuff = crypto.solSHA3([order.params.makerToken, order.params.takerToken]);
const expectedTokens = ethUtil.bufferToHex(tokensHashBuff);
expect(order.params.maker).to.be.equal(logArgs.maker);
expect(taker).to.be.equal(logArgs.taker);
expect(order.params.feeRecipient).to.be.equal(logArgs.feeRecipient);
expect(order.params.makerToken).to.be.equal(logArgs.makerToken);
expect(order.params.takerToken).to.be.equal(logArgs.takerToken);
expect(expectedFilledMakerTokenAmount).to.be.bignumber.equal(logArgs.filledMakerTokenAmount);
expect(expectedFilledTakerTokenAmount).to.be.bignumber.equal(logArgs.filledTakerTokenAmount);
expect(expectedFeeMPaid).to.be.bignumber.equal(logArgs.paidMakerFee);
expect(expectedFeeTPaid).to.be.bignumber.equal(logArgs.paidTakerFee);
expect(expectedTokens).to.be.equal(logArgs.tokens);
expect(order.params.orderHashHex).to.be.equal(logArgs.orderHash);
});
it('should log 1 event with the correct arguments when order has no feeRecipient', async () => {
order = await orderFactory.newSignedOrderAsync({
feeRecipient: ZeroEx.NULL_ADDRESS,
});
const divisor = 2;
const res = await exWrapper.fillOrderAsync(order, taker,
{fillTakerTokenAmount: order.params.takerTokenAmount.div(divisor)});
expect(res.logs).to.have.length(1);
const logArgs = res.logs[0].args;
const expectedFilledMakerTokenAmount = order.params.makerTokenAmount.div(divisor);
const expectedFilledTakerTokenAmount = order.params.takerTokenAmount.div(divisor);
const expectedFeeMPaid = new BigNumber(0);
const expectedFeeTPaid = new BigNumber(0);
const tokensHashBuff = crypto.solSHA3([order.params.makerToken, order.params.takerToken]);
const expectedTokens = ethUtil.bufferToHex(tokensHashBuff);
expect(order.params.maker).to.be.equal(logArgs.maker);
expect(taker).to.be.equal(logArgs.taker);
expect(order.params.feeRecipient).to.be.equal(logArgs.feeRecipient);
expect(order.params.makerToken).to.be.equal(logArgs.makerToken);
expect(order.params.takerToken).to.be.equal(logArgs.takerToken);
expect(expectedFilledMakerTokenAmount).to.be.bignumber.equal(logArgs.filledMakerTokenAmount);
expect(expectedFilledTakerTokenAmount).to.be.bignumber.equal(logArgs.filledTakerTokenAmount);
expect(expectedFeeMPaid).to.be.bignumber.equal(logArgs.paidMakerFee);
expect(expectedFeeTPaid).to.be.bignumber.equal(logArgs.paidTakerFee);
expect(expectedTokens).to.be.equal(logArgs.tokens);
expect(order.params.orderHashHex).to.be.equal(logArgs.orderHash);
});
it('should throw when taker is specified and order is claimed by other', async () => {
order = await orderFactory.newSignedOrderAsync({
taker: feeRecipient,
makerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(100), 18),
takerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(200), 18),
});
return expect(exWrapper.fillOrderAsync(order, taker)).to.be.rejectedWith(constants.REVERT);
});
it('should throw if signature is invalid', async () => {
order = await orderFactory.newSignedOrderAsync({
makerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(10), 18),
});
order.params.r = ethUtil.bufferToHex(ethUtil.sha3('invalidR'));
order.params.s = ethUtil.bufferToHex(ethUtil.sha3('invalidS'));
return expect(exWrapper.fillOrderAsync(order, taker)).to.be.rejectedWith(constants.REVERT);
});
it('should throw if makerTokenAmount is 0', async () => {
order = await orderFactory.newSignedOrderAsync({
makerTokenAmount: new BigNumber(0),
});
return expect(exWrapper.fillOrderAsync(order, taker)).to.be.rejectedWith(constants.REVERT);
});
it('should throw if takerTokenAmount is 0', async () => {
order = await orderFactory.newSignedOrderAsync({
takerTokenAmount: new BigNumber(0),
});
return expect(exWrapper.fillOrderAsync(order, taker)).to.be.rejectedWith(constants.REVERT);
});
it('should throw if fillTakerTokenAmount is 0', async () => {
order = await orderFactory.newSignedOrderAsync();
return expect(exWrapper.fillOrderAsync(order, taker, {fillTakerTokenAmount: new BigNumber(0)}))
.to.be.rejectedWith(constants.REVERT);
});
it('should not change balances if maker balances are too low to fill order and \
shouldThrowOnInsufficientBalanceOrAllowance = false',
async () => {
order = await orderFactory.newSignedOrderAsync({
makerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(100000), 18),
});
await exWrapper.fillOrderAsync(order, taker);
const newBalances = await dmyBalances.getAsync();
expect(newBalances).to.be.deep.equal(balances);
});
it('should throw if maker balances are too low to fill order and \
shouldThrowOnInsufficientBalanceOrAllowance = true',
async () => {
order = await orderFactory.newSignedOrderAsync({
makerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(100000), 18),
});
return expect(exWrapper.fillOrderAsync(order, taker, {shouldThrowOnInsufficientBalanceOrAllowance: true}))
.to.be.rejectedWith(constants.REVERT);
});
it('should not change balances if taker balances are too low to fill order and \
shouldThrowOnInsufficientBalanceOrAllowance = false',
async () => {
order = await orderFactory.newSignedOrderAsync({
takerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(100000), 18),
});
await exWrapper.fillOrderAsync(order, taker);
const newBalances = await dmyBalances.getAsync();
expect(newBalances).to.be.deep.equal(balances);
});
it('should throw if taker balances are too low to fill order and \
shouldThrowOnInsufficientBalanceOrAllowance = true',
async () => {
order = await orderFactory.newSignedOrderAsync({
takerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(100000), 18),
});
return expect(exWrapper.fillOrderAsync(order, taker, {shouldThrowOnInsufficientBalanceOrAllowance: true}))
.to.be.rejectedWith(constants.REVERT);
});
it('should not change balances if maker allowances are too low to fill order and \
shouldThrowOnInsufficientBalanceOrAllowance = false',
async () => {
await rep.approve(TokenTransferProxy.address, 0, {from: maker});
await exWrapper.fillOrderAsync(order, taker);
await rep.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {from: maker});
const newBalances = await dmyBalances.getAsync();
expect(newBalances).to.be.deep.equal(balances);
});
it('should throw if maker allowances are too low to fill order and \
shouldThrowOnInsufficientBalanceOrAllowance = true',
async () => {
await rep.approve(TokenTransferProxy.address, 0, {from: maker});
expect(exWrapper.fillOrderAsync(order, taker, {shouldThrowOnInsufficientBalanceOrAllowance: true}))
.to.be.rejectedWith(constants.REVERT);
await rep.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {from: maker});
});
it('should not change balances if taker allowances are too low to fill order and \
shouldThrowOnInsufficientBalanceOrAllowance = false',
async () => {
await dgd.approve(TokenTransferProxy.address, 0, {from: taker});
await exWrapper.fillOrderAsync(order, taker);
await dgd.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {from: taker});
const newBalances = await dmyBalances.getAsync();
expect(newBalances).to.be.deep.equal(balances);
});
it('should throw if taker allowances are too low to fill order and \
shouldThrowOnInsufficientBalanceOrAllowance = true',
async () => {
await dgd.approve(TokenTransferProxy.address, 0, {from: taker});
expect(exWrapper.fillOrderAsync(order, taker, {shouldThrowOnInsufficientBalanceOrAllowance: true}))
.to.be.rejectedWith(constants.REVERT);
await dgd.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {from: taker});
});
it('should not change balances if makerToken is ZRX, makerTokenAmount + makerFee > maker balance, \
and shouldThrowOnInsufficientBalanceOrAllowance = false',
async () => {
const makerZRXBalance = new BigNumber(balances[maker][zrx.address]);
order = await orderFactory.newSignedOrderAsync({
makerToken: zrx.address,
makerTokenAmount: makerZRXBalance,
makerFee: new BigNumber(1),
});
await exWrapper.fillOrderAsync(order, taker);
const newBalances = await dmyBalances.getAsync();
expect(newBalances).to.be.deep.equal(balances);
});
it('should not change balances if makerToken is ZRX, makerTokenAmount + makerFee > maker allowance, \
and shouldThrowOnInsufficientBalanceOrAllowance = false',
async () => {
const makerZRXAllowance = await zrx.allowance(maker, TokenTransferProxy.address);
order = await orderFactory.newSignedOrderAsync({
makerToken: zrx.address,
makerTokenAmount: new BigNumber(makerZRXAllowance),
makerFee: new BigNumber(1),
});
await exWrapper.fillOrderAsync(order, taker);
const newBalances = await dmyBalances.getAsync();
expect(newBalances).to.be.deep.equal(balances);
});
it('should not change balances if takerToken is ZRX, takerTokenAmount + takerFee > taker balance, \
and shouldThrowOnInsufficientBalanceOrAllowance = false',
async () => {
const takerZRXBalance = new BigNumber(balances[taker][zrx.address]);
order = await orderFactory.newSignedOrderAsync({
takerToken: zrx.address,
takerTokenAmount: takerZRXBalance,
takerFee: new BigNumber(1),
});
await exWrapper.fillOrderAsync(order, taker);
const newBalances = await dmyBalances.getAsync();
expect(newBalances).to.be.deep.equal(balances);
});
it('should not change balances if takerToken is ZRX, takerTokenAmount + takerFee > taker allowance, \
and shouldThrowOnInsufficientBalanceOrAllowance = false',
async () => {
const takerZRXAllowance = await zrx.allowance(taker, TokenTransferProxy.address);
order = await orderFactory.newSignedOrderAsync({
takerToken: zrx.address,
takerTokenAmount: new BigNumber(takerZRXAllowance),
takerFee: new BigNumber(1),
});
await exWrapper.fillOrderAsync(order, taker);
const newBalances = await dmyBalances.getAsync();
expect(newBalances).to.be.deep.equal(balances);
});
it('should throw if getBalance or getAllowance attempts to change state and \
shouldThrowOnInsufficientBalanceOrAllowance = false', async () => {
const maliciousToken = await MaliciousToken.new();
await maliciousToken.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {from: taker});
order = await orderFactory.newSignedOrderAsync({
takerToken: maliciousToken.address,
});
return expect(exWrapper.fillOrderAsync(order, taker, {shouldThrowOnInsufficientBalanceOrAllowance: false}))
.to.be.rejectedWith(constants.INVALID_OPCODE);
});
it('should not change balances if an order is expired', async () => {
order = await orderFactory.newSignedOrderAsync({
expirationTimestampInSec: new BigNumber(Math.floor((Date.now() - 10000) / 1000)),
});
await exWrapper.fillOrderAsync(order, taker);
const newBalances = await dmyBalances.getAsync();
expect(newBalances).to.be.deep.equal(balances);
});
it('should log an error event if an order is expired', async () => {
order = await orderFactory.newSignedOrderAsync({
expirationTimestampInSec: new BigNumber(Math.floor((Date.now() - 10000) / 1000)),
});
const res = await exWrapper.fillOrderAsync(order, taker);
expect(res.logs).to.have.length(1);
const errCode = res.logs[0].args.errorId.toNumber();
expect(errCode).to.be.equal(ExchangeContractErrs.ERROR_ORDER_EXPIRED);
});
it('should log an error event if no value is filled', async () => {
await exWrapper.fillOrderAsync(order, taker);
const res = await exWrapper.fillOrderAsync(order, taker);
expect(res.logs).to.have.length(1);
const errCode = res.logs[0].args.errorId.toNumber();
expect(errCode).to.be.equal(ExchangeContractErrs.ERROR_ORDER_FULLY_FILLED_OR_CANCELLED);
});
});
describe('cancelOrder', () => {
beforeEach(async () => {
balances = await dmyBalances.getAsync();
order = await orderFactory.newSignedOrderAsync();
});
it('should throw if not sent by maker', async () => {
return expect(exWrapper.cancelOrderAsync(order, taker)).to.be.rejectedWith(constants.REVERT);
});
it('should throw if makerTokenAmount is 0', async () => {
order = await orderFactory.newSignedOrderAsync({
makerTokenAmount: new BigNumber(0),
});
return expect(exWrapper.cancelOrderAsync(order, maker)).to.be.rejectedWith(constants.REVERT);
});
it('should throw if takerTokenAmount is 0', async () => {
order = await orderFactory.newSignedOrderAsync({
takerTokenAmount: new BigNumber(0),
});
return expect(exWrapper.cancelOrderAsync(order, maker)).to.be.rejectedWith(constants.REVERT);
});
it('should throw if cancelTakerTokenAmount is 0', async () => {
order = await orderFactory.newSignedOrderAsync();
return expect(exWrapper.cancelOrderAsync(order, maker, {cancelTakerTokenAmount: new BigNumber(0)}))
.to.be.rejectedWith(constants.REVERT);
});
it('should be able to cancel a full order', async () => {
await exWrapper.cancelOrderAsync(order, maker);
await exWrapper.fillOrderAsync(order, taker, {fillTakerTokenAmount: order.params.takerTokenAmount.div(2)});
const newBalances = await dmyBalances.getAsync();
expect(newBalances).to.be.deep.equal(balances);
});
it('should be able to cancel part of an order', async () => {
const cancelTakerTokenAmount = order.params.takerTokenAmount.div(2);
await exWrapper.cancelOrderAsync(order, maker, {cancelTakerTokenAmount});
const res = await exWrapper.fillOrderAsync(order, taker,
{fillTakerTokenAmount: order.params.takerTokenAmount});
expect(res.logs[0].args.filledTakerTokenAmount)
.to.be.bignumber.equal(order.params.takerTokenAmount.minus(cancelTakerTokenAmount));
const newBalances = await dmyBalances.getAsync();
const cancelMakerTokenAmount = cancelTakerTokenAmount
.times(order.params.makerTokenAmount)
.dividedToIntegerBy(order.params.takerTokenAmount);
const paidMakerFee = order.params.makerFee
.times(cancelMakerTokenAmount)
.dividedToIntegerBy(order.params.makerTokenAmount);
const paidTakerFee = order.params.takerFee
.times(cancelMakerTokenAmount)
.dividedToIntegerBy(order.params.makerTokenAmount);
expect(newBalances[maker][order.params.makerToken])
.to.be.bignumber.equal(balances[maker][order.params.makerToken].minus(cancelMakerTokenAmount));
expect(newBalances[maker][order.params.takerToken])
.to.be.bignumber.equal(balances[maker][order.params.takerToken].add(cancelTakerTokenAmount));
expect(newBalances[maker][zrx.address])
.to.be.bignumber.equal(balances[maker][zrx.address].minus(paidMakerFee));
expect(newBalances[taker][order.params.takerToken])
.to.be.bignumber.equal(balances[taker][order.params.takerToken].minus(cancelTakerTokenAmount));
expect(newBalances[taker][order.params.makerToken])
.to.be.bignumber.equal(balances[taker][order.params.makerToken].add(cancelMakerTokenAmount));
expect(newBalances[taker][zrx.address]).to.be.bignumber
.equal(balances[taker][zrx.address].minus(paidTakerFee));
expect(newBalances[feeRecipient][zrx.address])
.to.be.bignumber.equal(balances[feeRecipient][zrx.address].add(paidMakerFee.add(paidTakerFee)));
});
it('should log 1 event with correct arguments', async () => {
const divisor = 2;
const res = await exWrapper.cancelOrderAsync(order, maker,
{cancelTakerTokenAmount: order.params.takerTokenAmount.div(divisor)});
expect(res.logs).to.have.length(1);
const logArgs = res.logs[0].args;
const expectedCancelledMakerTokenAmount = order.params.makerTokenAmount.div(divisor);
const expectedCancelledTakerTokenAmount = order.params.takerTokenAmount.div(divisor);
const tokensHashBuff = crypto.solSHA3([order.params.makerToken, order.params.takerToken]);
const expectedTokens = ethUtil.bufferToHex(tokensHashBuff);
expect(order.params.maker).to.be.equal(logArgs.maker);
expect(order.params.feeRecipient).to.be.equal(logArgs.feeRecipient);
expect(order.params.makerToken).to.be.equal(logArgs.makerToken);
expect(order.params.takerToken).to.be.equal(logArgs.takerToken);
expect(expectedCancelledMakerTokenAmount).to.be.bignumber.equal(logArgs.cancelledMakerTokenAmount);
expect(expectedCancelledTakerTokenAmount).to.be.bignumber.equal(logArgs.cancelledTakerTokenAmount);
expect(expectedTokens).to.be.equal(logArgs.tokens);
expect(order.params.orderHashHex).to.be.equal(logArgs.orderHash);
});
it('should not log events if no value is cancelled', async () => {
await exWrapper.cancelOrderAsync(order, maker);
const res = await exWrapper.cancelOrderAsync(order, maker);
expect(res.logs).to.have.length(1);
const errId = res.logs[0].args.errorId.toNumber();
const errCode = res.logs[0].args.errorId.toNumber();
expect(errCode).to.be.equal(ExchangeContractErrs.ERROR_ORDER_FULLY_FILLED_OR_CANCELLED);
});
it('should not log events if order is expired', async () => {
order = await orderFactory.newSignedOrderAsync({
expirationTimestampInSec: new BigNumber(Math.floor((Date.now() - 10000) / 1000)),
});
const res = await exWrapper.cancelOrderAsync(order, maker);
expect(res.logs).to.have.length(1);
const errCode = res.logs[0].args.errorId.toNumber();
expect(errCode).to.be.equal(ExchangeContractErrs.ERROR_ORDER_EXPIRED);
});
});
}); // tslint:disable-line:max-file-line-count