protocol/contracts/erc20-bridge-sampler/test/erc20-bridge-sampler.ts
Xianny f14b6f2ba2
Fix/erc20 sampler/uniswap v2 buys (#2603)
* `@0x/contracts-erc20-bridge-sampler`: Fix `sampleBuysFromUniswapV2()`

* fix uniswapV2 buys

* redeploy ERC20BridgeSampler to fix Uniswap buys

* fix changelog, move artifact to correct dir

Co-authored-by: Lawrence Forman <lawrence@0xproject.com>
2020-06-12 15:54:19 -07:00

1087 lines
50 KiB
TypeScript

import {
blockchainTests,
constants,
expect,
getRandomInteger,
getRandomPortion,
randomAddress,
} from '@0x/contracts-test-utils';
import { Order } from '@0x/types';
import { BigNumber, hexUtils } from '@0x/utils';
import * as _ from 'lodash';
import { artifacts } from './artifacts';
import {
DummyLiquidityProviderContract,
DummyLiquidityProviderRegistryContract,
TestERC20BridgeSamplerContract,
} from './wrappers';
blockchainTests('erc20-bridge-sampler', env => {
let testContract: TestERC20BridgeSamplerContract;
const RATE_DENOMINATOR = constants.ONE_ETHER;
const MIN_RATE = new BigNumber('0.01');
const MAX_RATE = new BigNumber('100');
const MIN_DECIMALS = 4;
const MAX_DECIMALS = 20;
const WETH_ADDRESS = '0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2';
const KYBER_SALT = '0x0ff3ca9d46195c39f9a12afb74207b4970349fb3cfb1e459bbf170298d326bc7';
const ETH2DAI_SALT = '0xb713b61bb9bb2958a0f5d1534b21e94fc68c4c0c034b0902ed844f2f6cd1b4f7';
const UNISWAP_BASE_SALT = '0x1d6a6a0506b0b4a554b907a4c29d9f4674e461989d9c1921feb17b26716385ab';
const UNISWAP_V2_SALT = '0xadc7fcb33c735913b8635927e66896b356a53a912ab2ceff929e60a04b53b3c1';
const ERC20_PROXY_ID = '0xf47261b0';
const INVALID_TOKEN_PAIR_ERROR = 'ERC20BridgeSampler/INVALID_TOKEN_PAIR';
const MAKER_TOKEN = randomAddress();
const TAKER_TOKEN = randomAddress();
const FAKE_BUY_OPTS = {
targetSlippageBps: new BigNumber(5),
maxIterations: new BigNumber(5),
};
before(async () => {
testContract = await TestERC20BridgeSamplerContract.deployFrom0xArtifactAsync(
artifacts.TestERC20BridgeSampler,
env.provider,
env.txDefaults,
{},
);
});
function getPackedHash(...args: string[]): string {
return hexUtils.hash(hexUtils.concat(...args.map(a => hexUtils.toHex(a))));
}
function getUniswapExchangeSalt(tokenAddress: string): string {
return getPackedHash(UNISWAP_BASE_SALT, tokenAddress);
}
function getDeterministicRate(salt: string, sellToken: string, buyToken: string): BigNumber {
const hash = getPackedHash(salt, sellToken, buyToken);
const _minRate = RATE_DENOMINATOR.times(MIN_RATE);
const _maxRate = RATE_DENOMINATOR.times(MAX_RATE);
return new BigNumber(hash)
.mod(_maxRate.minus(_minRate))
.plus(_minRate)
.div(RATE_DENOMINATOR);
}
function getDeterministicTokenDecimals(token: string): number {
if (token === WETH_ADDRESS) {
return 18;
}
// HACK(dorothy-zbornak): Linter will complain about the addition not being
// between two numbers, even though they are.
// tslint:disable-next-line restrict-plus-operands
return new BigNumber(getPackedHash(token)).mod(MAX_DECIMALS - MIN_DECIMALS).toNumber() + MIN_DECIMALS;
}
function getDeterministicSellQuote(
salt: string,
sellToken: string,
buyToken: string,
sellAmount: BigNumber,
): BigNumber {
const sellBase = new BigNumber(10).pow(getDeterministicTokenDecimals(sellToken));
const buyBase = new BigNumber(10).pow(getDeterministicTokenDecimals(buyToken));
const rate = getDeterministicRate(salt, sellToken, buyToken);
return sellAmount
.times(rate)
.times(buyBase)
.dividedToIntegerBy(sellBase);
}
function getDeterministicBuyQuote(
salt: string,
sellToken: string,
buyToken: string,
buyAmount: BigNumber,
): BigNumber {
const sellBase = new BigNumber(10).pow(getDeterministicTokenDecimals(sellToken));
const buyBase = new BigNumber(10).pow(getDeterministicTokenDecimals(buyToken));
const rate = getDeterministicRate(salt, sellToken, buyToken);
return buyAmount
.times(sellBase)
.dividedToIntegerBy(rate)
.dividedToIntegerBy(buyBase);
}
function areAddressesEqual(a: string, b: string): boolean {
return a.toLowerCase() === b.toLowerCase();
}
function getDeterministicUniswapSellQuote(sellToken: string, buyToken: string, sellAmount: BigNumber): BigNumber {
if (areAddressesEqual(buyToken, WETH_ADDRESS)) {
return getDeterministicSellQuote(getUniswapExchangeSalt(sellToken), sellToken, WETH_ADDRESS, sellAmount);
}
if (areAddressesEqual(sellToken, WETH_ADDRESS)) {
return getDeterministicSellQuote(getUniswapExchangeSalt(buyToken), buyToken, WETH_ADDRESS, sellAmount);
}
const ethBought = getDeterministicSellQuote(
getUniswapExchangeSalt(sellToken),
sellToken,
WETH_ADDRESS,
sellAmount,
);
return getDeterministicSellQuote(getUniswapExchangeSalt(buyToken), buyToken, WETH_ADDRESS, ethBought);
}
function getDeterministicUniswapBuyQuote(sellToken: string, buyToken: string, buyAmount: BigNumber): BigNumber {
if (areAddressesEqual(buyToken, WETH_ADDRESS)) {
return getDeterministicBuyQuote(getUniswapExchangeSalt(sellToken), WETH_ADDRESS, sellToken, buyAmount);
}
if (areAddressesEqual(sellToken, WETH_ADDRESS)) {
return getDeterministicBuyQuote(getUniswapExchangeSalt(buyToken), WETH_ADDRESS, buyToken, buyAmount);
}
const ethSold = getDeterministicBuyQuote(getUniswapExchangeSalt(buyToken), WETH_ADDRESS, buyToken, buyAmount);
return getDeterministicBuyQuote(getUniswapExchangeSalt(sellToken), WETH_ADDRESS, sellToken, ethSold);
}
function getDeterministicSellQuotes(
sellToken: string,
buyToken: string,
sources: string[],
sampleAmounts: BigNumber[],
): BigNumber[][] {
const quotes: BigNumber[][] = [];
for (const source of sources) {
const sampleOutputs = [];
for (const amount of sampleAmounts) {
if (source === 'Kyber' || source === 'Eth2Dai') {
sampleOutputs.push(
getDeterministicSellQuote(
source === 'Kyber' ? KYBER_SALT : ETH2DAI_SALT,
sellToken,
buyToken,
amount,
),
);
} else if (source === 'Uniswap') {
sampleOutputs.push(getDeterministicUniswapSellQuote(sellToken, buyToken, amount));
}
}
quotes.push(sampleOutputs);
}
return quotes;
}
function getDeterministicBuyQuotes(
sellToken: string,
buyToken: string,
sources: string[],
sampleAmounts: BigNumber[],
): BigNumber[][] {
const quotes: BigNumber[][] = [];
for (const source of sources) {
const sampleOutputs = [];
for (const amount of sampleAmounts) {
if (source === 'Kyber' || source === 'Eth2Dai') {
sampleOutputs.push(
getDeterministicBuyQuote(
source === 'Kyber' ? KYBER_SALT : ETH2DAI_SALT,
sellToken,
buyToken,
amount,
),
);
} else if (source === 'Uniswap') {
sampleOutputs.push(getDeterministicUniswapBuyQuote(sellToken, buyToken, amount));
}
}
quotes.push(sampleOutputs);
}
return quotes;
}
function getDeterministicUniswapV2SellQuote(path: string[], sellAmount: BigNumber): BigNumber {
let bought = sellAmount;
for (let i = 0; i < path.length - 1; ++i) {
bought = getDeterministicSellQuote(UNISWAP_V2_SALT, path[i], path[i + 1], bought);
}
return bought;
}
function getDeterministicUniswapV2BuyQuote(path: string[], buyAmount: BigNumber): BigNumber {
let sold = buyAmount;
for (let i = path.length - 1; i > 0; --i) {
sold = getDeterministicBuyQuote(UNISWAP_V2_SALT, path[i - 1], path[i], sold);
}
return sold;
}
function getDeterministicFillableTakerAssetAmount(order: Order): BigNumber {
const hash = getPackedHash(hexUtils.leftPad(order.salt));
const orderStatus = new BigNumber(hash).mod(100).toNumber() > 90 ? 5 : 3;
const isValidSignature = !!new BigNumber(hash).mod(2).toNumber();
if (orderStatus !== 3 || !isValidSignature) {
return constants.ZERO_AMOUNT;
}
return order.takerAssetAmount.minus(new BigNumber(hash).mod(order.takerAssetAmount));
}
function getDeterministicFillableMakerAssetAmount(order: Order): BigNumber {
const takerAmount = getDeterministicFillableTakerAssetAmount(order);
return order.makerAssetAmount
.times(takerAmount)
.div(order.takerAssetAmount)
.integerValue(BigNumber.ROUND_UP);
}
function getERC20AssetData(tokenAddress: string): string {
return hexUtils.concat(ERC20_PROXY_ID, hexUtils.leftPad(tokenAddress));
}
function getSampleAmounts(tokenAddress: string, count?: number): BigNumber[] {
const tokenDecimals = getDeterministicTokenDecimals(tokenAddress);
const _upperLimit = getRandomPortion(getRandomInteger(1000, 50000).times(10 ** tokenDecimals));
const _count = count || _.random(1, 16);
const d = _upperLimit.div(_count);
return _.times(_count, i => d.times((i + 1) / _count).integerValue());
}
function createOrder(makerToken: string, takerToken: string): Order {
return {
chainId: 1337,
exchangeAddress: randomAddress(),
makerAddress: randomAddress(),
takerAddress: randomAddress(),
senderAddress: randomAddress(),
feeRecipientAddress: randomAddress(),
makerAssetAmount: getRandomInteger(1, 1e18),
takerAssetAmount: getRandomInteger(1, 1e18),
makerFee: getRandomInteger(1, 1e18),
takerFee: getRandomInteger(1, 1e18),
makerAssetData: getERC20AssetData(makerToken),
takerAssetData: getERC20AssetData(takerToken),
makerFeeAssetData: getERC20AssetData(randomAddress()),
takerFeeAssetData: getERC20AssetData(randomAddress()),
salt: new BigNumber(hexUtils.random()),
expirationTimeSeconds: getRandomInteger(0, 2 ** 32),
};
}
function createOrders(makerToken: string, takerToken: string, count?: number): Order[] {
return _.times(count || _.random(1, 16), () => createOrder(makerToken, takerToken));
}
async function enableFailTriggerAsync(): Promise<void> {
await testContract.enableFailTrigger().awaitTransactionSuccessAsync({ value: 1 });
}
describe('getOrderFillableTakerAssetAmounts()', () => {
it('returns the expected amount for each order', async () => {
const orders = createOrders(MAKER_TOKEN, TAKER_TOKEN);
const signatures: string[] = _.times(orders.length, i => hexUtils.random());
const expected = orders.map(getDeterministicFillableTakerAssetAmount);
const actual = await testContract.getOrderFillableTakerAssetAmounts(orders, signatures).callAsync();
expect(actual).to.deep.eq(expected);
});
it('returns empty for no orders', async () => {
const actual = await testContract.getOrderFillableTakerAssetAmounts([], []).callAsync();
expect(actual).to.deep.eq([]);
});
it('returns zero for an order with zero maker asset amount', async () => {
const orders = createOrders(MAKER_TOKEN, TAKER_TOKEN, 1);
orders[0].makerAssetAmount = constants.ZERO_AMOUNT;
const signatures: string[] = _.times(orders.length, i => hexUtils.random());
const actual = await testContract.getOrderFillableTakerAssetAmounts(orders, signatures).callAsync();
expect(actual).to.deep.eq([constants.ZERO_AMOUNT]);
});
it('returns zero for an order with zero taker asset amount', async () => {
const orders = createOrders(MAKER_TOKEN, TAKER_TOKEN, 1);
orders[0].takerAssetAmount = constants.ZERO_AMOUNT;
const signatures: string[] = _.times(orders.length, i => hexUtils.random());
const actual = await testContract.getOrderFillableTakerAssetAmounts(orders, signatures).callAsync();
expect(actual).to.deep.eq([constants.ZERO_AMOUNT]);
});
it('returns zero for an order with an empty signature', async () => {
const orders = createOrders(MAKER_TOKEN, TAKER_TOKEN, 1);
const signatures: string[] = _.times(orders.length, () => constants.NULL_BYTES);
const actual = await testContract.getOrderFillableTakerAssetAmounts(orders, signatures).callAsync();
expect(actual).to.deep.eq([constants.ZERO_AMOUNT]);
});
});
describe('getOrderFillableMakerAssetAmounts()', () => {
it('returns the expected amount for each order', async () => {
const orders = createOrders(MAKER_TOKEN, TAKER_TOKEN);
const signatures: string[] = _.times(orders.length, i => hexUtils.random());
const expected = orders.map(getDeterministicFillableMakerAssetAmount);
const actual = await testContract.getOrderFillableMakerAssetAmounts(orders, signatures).callAsync();
expect(actual).to.deep.eq(expected);
});
it('returns empty for no orders', async () => {
const actual = await testContract.getOrderFillableMakerAssetAmounts([], []).callAsync();
expect(actual).to.deep.eq([]);
});
it('returns zero for an order with zero maker asset amount', async () => {
const orders = createOrders(MAKER_TOKEN, TAKER_TOKEN, 1);
orders[0].makerAssetAmount = constants.ZERO_AMOUNT;
const signatures: string[] = _.times(orders.length, i => hexUtils.random());
const actual = await testContract.getOrderFillableMakerAssetAmounts(orders, signatures).callAsync();
expect(actual).to.deep.eq([constants.ZERO_AMOUNT]);
});
it('returns zero for an order with zero taker asset amount', async () => {
const orders = createOrders(MAKER_TOKEN, TAKER_TOKEN, 1);
orders[0].takerAssetAmount = constants.ZERO_AMOUNT;
const signatures: string[] = _.times(orders.length, i => hexUtils.random());
const actual = await testContract.getOrderFillableMakerAssetAmounts(orders, signatures).callAsync();
expect(actual).to.deep.eq([constants.ZERO_AMOUNT]);
});
it('returns zero for an order with an empty signature', async () => {
const orders = createOrders(MAKER_TOKEN, TAKER_TOKEN, 1);
const signatures: string[] = _.times(orders.length, () => constants.NULL_BYTES);
const actual = await testContract.getOrderFillableMakerAssetAmounts(orders, signatures).callAsync();
expect(actual).to.deep.eq([constants.ZERO_AMOUNT]);
});
});
blockchainTests.resets('sampleSellsFromKyberNetwork()', () => {
before(async () => {
await testContract.createTokenExchanges([MAKER_TOKEN, TAKER_TOKEN]).awaitTransactionSuccessAsync();
});
it('throws if tokens are the same', async () => {
const tx = testContract.sampleSellsFromKyberNetwork(MAKER_TOKEN, MAKER_TOKEN, []).callAsync();
return expect(tx).to.revertWith(INVALID_TOKEN_PAIR_ERROR);
});
it('can return no quotes', async () => {
const quotes = await testContract.sampleSellsFromKyberNetwork(TAKER_TOKEN, MAKER_TOKEN, []).callAsync();
expect(quotes).to.deep.eq([]);
});
it('can quote token -> token', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const [takerToEthQuotes] = getDeterministicSellQuotes(TAKER_TOKEN, WETH_ADDRESS, ['Kyber'], sampleAmounts);
const [expectedQuotes] = getDeterministicSellQuotes(WETH_ADDRESS, MAKER_TOKEN, ['Kyber'], takerToEthQuotes);
const quotes = await testContract
.sampleSellsFromKyberNetwork(TAKER_TOKEN, MAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if token -> token fails', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleSellsFromKyberNetwork(TAKER_TOKEN, MAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('can quote token -> ETH', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const [expectedQuotes] = getDeterministicSellQuotes(TAKER_TOKEN, WETH_ADDRESS, ['Kyber'], sampleAmounts);
const quotes = await testContract
.sampleSellsFromKyberNetwork(TAKER_TOKEN, WETH_ADDRESS, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if token -> ETH fails', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleSellsFromKyberNetwork(TAKER_TOKEN, WETH_ADDRESS, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('can quote ETH -> token', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const [expectedQuotes] = getDeterministicSellQuotes(WETH_ADDRESS, TAKER_TOKEN, ['Kyber'], sampleAmounts);
const quotes = await testContract
.sampleSellsFromKyberNetwork(WETH_ADDRESS, TAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if ETH -> token fails', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleSellsFromKyberNetwork(WETH_ADDRESS, TAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
});
blockchainTests.resets('sampleBuysFromKyberNetwork()', () => {
const ACCEPTABLE_SLIPPAGE = 0.0005;
before(async () => {
await testContract.createTokenExchanges([MAKER_TOKEN, TAKER_TOKEN]).awaitTransactionSuccessAsync();
});
it('throws if tokens are the same', async () => {
const tx = testContract.sampleBuysFromKyberNetwork(MAKER_TOKEN, MAKER_TOKEN, [], FAKE_BUY_OPTS).callAsync();
return expect(tx).to.revertWith(INVALID_TOKEN_PAIR_ERROR);
});
it('can return no quotes', async () => {
const quotes = await testContract
.sampleBuysFromKyberNetwork(TAKER_TOKEN, MAKER_TOKEN, [], FAKE_BUY_OPTS)
.callAsync();
expect(quotes).to.deep.eq([]);
});
const expectQuotesWithinRange = (
quotes: BigNumber[],
expectedQuotes: BigNumber[],
maxSlippage: BigNumber | number,
) => {
quotes.forEach((_q, i) => {
// If we're within 1 base unit of a low decimal token
// then that's as good as we're going to get (and slippage is "high")
if (
expectedQuotes[i].isZero() ||
BigNumber.max(expectedQuotes[i], quotes[i])
.minus(BigNumber.min(expectedQuotes[i], quotes[i]))
.eq(1)
) {
return;
}
const slippage = quotes[i]
.dividedBy(expectedQuotes[i])
.minus(1)
.decimalPlaces(4);
expect(slippage, `quote[${i}]: ${slippage} ${quotes[i]} ${expectedQuotes[i]}`).to.be.bignumber.gte(0);
expect(slippage, `quote[${i}] ${slippage} ${quotes[i]} ${expectedQuotes[i]}`).to.be.bignumber.lte(
new BigNumber(maxSlippage),
);
});
};
it('can quote token -> token', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const [ethToMakerQuotes] = getDeterministicBuyQuotes(WETH_ADDRESS, MAKER_TOKEN, ['Kyber'], sampleAmounts);
const [expectedQuotes] = getDeterministicBuyQuotes(TAKER_TOKEN, WETH_ADDRESS, ['Kyber'], ethToMakerQuotes);
const quotes = await testContract
.sampleBuysFromKyberNetwork(TAKER_TOKEN, MAKER_TOKEN, sampleAmounts, FAKE_BUY_OPTS)
.callAsync();
expectQuotesWithinRange(quotes, expectedQuotes, ACCEPTABLE_SLIPPAGE);
});
it('returns zero if token -> token fails', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleBuysFromKyberNetwork(TAKER_TOKEN, MAKER_TOKEN, sampleAmounts, FAKE_BUY_OPTS)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('can quote token -> ETH', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const [expectedQuotes] = getDeterministicBuyQuotes(TAKER_TOKEN, WETH_ADDRESS, ['Kyber'], sampleAmounts);
const quotes = await testContract
.sampleBuysFromKyberNetwork(TAKER_TOKEN, WETH_ADDRESS, sampleAmounts, FAKE_BUY_OPTS)
.callAsync();
expectQuotesWithinRange(quotes, expectedQuotes, ACCEPTABLE_SLIPPAGE);
});
it('returns zero if token -> ETH fails', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleBuysFromKyberNetwork(TAKER_TOKEN, WETH_ADDRESS, sampleAmounts, FAKE_BUY_OPTS)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('can quote ETH -> token', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const [expectedQuotes] = getDeterministicBuyQuotes(WETH_ADDRESS, TAKER_TOKEN, ['Kyber'], sampleAmounts);
const quotes = await testContract
.sampleBuysFromKyberNetwork(WETH_ADDRESS, TAKER_TOKEN, sampleAmounts, FAKE_BUY_OPTS)
.callAsync();
expectQuotesWithinRange(quotes, expectedQuotes, ACCEPTABLE_SLIPPAGE);
});
it('returns zero if ETH -> token fails', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleBuysFromKyberNetwork(WETH_ADDRESS, TAKER_TOKEN, sampleAmounts, FAKE_BUY_OPTS)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
});
blockchainTests.resets('sampleSellsFromEth2Dai()', () => {
before(async () => {
await testContract.createTokenExchanges([MAKER_TOKEN, TAKER_TOKEN]).awaitTransactionSuccessAsync();
});
it('throws if tokens are the same', async () => {
const tx = testContract.sampleSellsFromEth2Dai(MAKER_TOKEN, MAKER_TOKEN, []).callAsync();
return expect(tx).to.revertWith(INVALID_TOKEN_PAIR_ERROR);
});
it('can return no quotes', async () => {
const quotes = await testContract.sampleSellsFromEth2Dai(TAKER_TOKEN, MAKER_TOKEN, []).callAsync();
expect(quotes).to.deep.eq([]);
});
it('can quote token -> token', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const [expectedQuotes] = getDeterministicSellQuotes(TAKER_TOKEN, MAKER_TOKEN, ['Eth2Dai'], sampleAmounts);
const quotes = await testContract
.sampleSellsFromEth2Dai(TAKER_TOKEN, MAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if token -> token fails', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleSellsFromEth2Dai(TAKER_TOKEN, MAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('can quote token -> ETH', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const [expectedQuotes] = getDeterministicSellQuotes(TAKER_TOKEN, WETH_ADDRESS, ['Eth2Dai'], sampleAmounts);
const quotes = await testContract
.sampleSellsFromEth2Dai(TAKER_TOKEN, WETH_ADDRESS, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if token -> ETH fails', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleSellsFromEth2Dai(TAKER_TOKEN, WETH_ADDRESS, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('can quote ETH -> token', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const [expectedQuotes] = getDeterministicSellQuotes(WETH_ADDRESS, TAKER_TOKEN, ['Eth2Dai'], sampleAmounts);
const quotes = await testContract
.sampleSellsFromEth2Dai(WETH_ADDRESS, TAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if ETH -> token fails', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleSellsFromEth2Dai(WETH_ADDRESS, TAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
});
blockchainTests.resets('sampleBuysFromEth2Dai()', () => {
before(async () => {
await testContract.createTokenExchanges([MAKER_TOKEN, TAKER_TOKEN]).awaitTransactionSuccessAsync();
});
it('throws if tokens are the same', async () => {
const tx = testContract.sampleBuysFromEth2Dai(MAKER_TOKEN, MAKER_TOKEN, []).callAsync();
return expect(tx).to.revertWith(INVALID_TOKEN_PAIR_ERROR);
});
it('can return no quotes', async () => {
const quotes = await testContract.sampleBuysFromEth2Dai(TAKER_TOKEN, MAKER_TOKEN, []).callAsync();
expect(quotes).to.deep.eq([]);
});
it('can quote token -> token', async () => {
const sampleAmounts = getSampleAmounts(MAKER_TOKEN);
const [expectedQuotes] = getDeterministicBuyQuotes(TAKER_TOKEN, MAKER_TOKEN, ['Eth2Dai'], sampleAmounts);
const quotes = await testContract
.sampleBuysFromEth2Dai(TAKER_TOKEN, MAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if token -> token fails', async () => {
const sampleAmounts = getSampleAmounts(MAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleBuysFromEth2Dai(TAKER_TOKEN, MAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('can quote token -> ETH', async () => {
const sampleAmounts = getSampleAmounts(MAKER_TOKEN);
const [expectedQuotes] = getDeterministicBuyQuotes(TAKER_TOKEN, WETH_ADDRESS, ['Eth2Dai'], sampleAmounts);
const quotes = await testContract
.sampleBuysFromEth2Dai(TAKER_TOKEN, WETH_ADDRESS, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if token -> ETH fails', async () => {
const sampleAmounts = getSampleAmounts(MAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleBuysFromEth2Dai(TAKER_TOKEN, WETH_ADDRESS, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('can quote ETH -> token', async () => {
const sampleAmounts = getSampleAmounts(MAKER_TOKEN);
const [expectedQuotes] = getDeterministicBuyQuotes(WETH_ADDRESS, TAKER_TOKEN, ['Eth2Dai'], sampleAmounts);
const quotes = await testContract
.sampleBuysFromEth2Dai(WETH_ADDRESS, TAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if ETH -> token fails', async () => {
const sampleAmounts = getSampleAmounts(MAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleBuysFromEth2Dai(WETH_ADDRESS, TAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
});
blockchainTests.resets('sampleSellsFromUniswap()', () => {
before(async () => {
await testContract.createTokenExchanges([MAKER_TOKEN, TAKER_TOKEN]).awaitTransactionSuccessAsync();
});
it('throws if tokens are the same', async () => {
const tx = testContract.sampleSellsFromUniswap(MAKER_TOKEN, MAKER_TOKEN, []).callAsync();
return expect(tx).to.revertWith(INVALID_TOKEN_PAIR_ERROR);
});
it('can return no quotes', async () => {
const quotes = await testContract.sampleSellsFromUniswap(TAKER_TOKEN, MAKER_TOKEN, []).callAsync();
expect(quotes).to.deep.eq([]);
});
it('can quote token -> token', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const [expectedQuotes] = getDeterministicSellQuotes(TAKER_TOKEN, MAKER_TOKEN, ['Uniswap'], sampleAmounts);
const quotes = await testContract
.sampleSellsFromUniswap(TAKER_TOKEN, MAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if token -> token fails', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleSellsFromUniswap(TAKER_TOKEN, MAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('can quote token -> ETH', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const [expectedQuotes] = getDeterministicSellQuotes(TAKER_TOKEN, WETH_ADDRESS, ['Uniswap'], sampleAmounts);
const quotes = await testContract
.sampleSellsFromUniswap(TAKER_TOKEN, WETH_ADDRESS, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if token -> ETH fails', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleSellsFromUniswap(TAKER_TOKEN, WETH_ADDRESS, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('can quote ETH -> token', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const [expectedQuotes] = getDeterministicSellQuotes(WETH_ADDRESS, TAKER_TOKEN, ['Uniswap'], sampleAmounts);
const quotes = await testContract
.sampleSellsFromUniswap(WETH_ADDRESS, TAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if ETH -> token fails', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleSellsFromUniswap(WETH_ADDRESS, TAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if no exchange exists for the maker token', async () => {
const nonExistantToken = randomAddress();
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
const quotes = await testContract
.sampleSellsFromUniswap(TAKER_TOKEN, nonExistantToken, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if no exchange exists for the taker token', async () => {
const nonExistantToken = randomAddress();
const sampleAmounts = getSampleAmounts(nonExistantToken);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
const quotes = await testContract
.sampleSellsFromUniswap(nonExistantToken, MAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
});
blockchainTests.resets('sampleBuysFromUniswap()', () => {
before(async () => {
await testContract.createTokenExchanges([MAKER_TOKEN, TAKER_TOKEN]).awaitTransactionSuccessAsync();
});
it('throws if tokens are the same', async () => {
const tx = testContract.sampleBuysFromUniswap(MAKER_TOKEN, MAKER_TOKEN, []).callAsync();
return expect(tx).to.revertWith(INVALID_TOKEN_PAIR_ERROR);
});
it('can return no quotes', async () => {
const quotes = await testContract.sampleBuysFromUniswap(TAKER_TOKEN, MAKER_TOKEN, []).callAsync();
expect(quotes).to.deep.eq([]);
});
it('can quote token -> token', async () => {
const sampleAmounts = getSampleAmounts(MAKER_TOKEN);
const [expectedQuotes] = getDeterministicBuyQuotes(TAKER_TOKEN, MAKER_TOKEN, ['Uniswap'], sampleAmounts);
const quotes = await testContract
.sampleBuysFromUniswap(TAKER_TOKEN, MAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if token -> token fails', async () => {
const sampleAmounts = getSampleAmounts(MAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleBuysFromUniswap(TAKER_TOKEN, MAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('can quote token -> ETH', async () => {
const sampleAmounts = getSampleAmounts(MAKER_TOKEN);
const [expectedQuotes] = getDeterministicBuyQuotes(TAKER_TOKEN, WETH_ADDRESS, ['Uniswap'], sampleAmounts);
const quotes = await testContract
.sampleBuysFromUniswap(TAKER_TOKEN, WETH_ADDRESS, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if token -> ETH fails', async () => {
const sampleAmounts = getSampleAmounts(MAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleBuysFromUniswap(TAKER_TOKEN, WETH_ADDRESS, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('can quote ETH -> token', async () => {
const sampleAmounts = getSampleAmounts(MAKER_TOKEN);
const [expectedQuotes] = getDeterministicBuyQuotes(WETH_ADDRESS, TAKER_TOKEN, ['Uniswap'], sampleAmounts);
const quotes = await testContract
.sampleBuysFromUniswap(WETH_ADDRESS, TAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if ETH -> token fails', async () => {
const sampleAmounts = getSampleAmounts(MAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleBuysFromUniswap(WETH_ADDRESS, TAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if no exchange exists for the maker token', async () => {
const nonExistantToken = randomAddress();
const sampleAmounts = getSampleAmounts(nonExistantToken);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
const quotes = await testContract
.sampleBuysFromUniswap(TAKER_TOKEN, nonExistantToken, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if no exchange exists for the taker token', async () => {
const nonExistantToken = randomAddress();
const sampleAmounts = getSampleAmounts(MAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
const quotes = await testContract
.sampleBuysFromUniswap(nonExistantToken, MAKER_TOKEN, sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
});
describe('getLiquidityProviderFromRegistry', () => {
const xAsset = randomAddress();
const yAsset = randomAddress();
const sampleAmounts = getSampleAmounts(yAsset);
let liquidityProvider: DummyLiquidityProviderContract;
let registryContract: DummyLiquidityProviderRegistryContract;
before(async () => {
liquidityProvider = await DummyLiquidityProviderContract.deployFrom0xArtifactAsync(
artifacts.DummyLiquidityProvider,
env.provider,
env.txDefaults,
{},
);
registryContract = await DummyLiquidityProviderRegistryContract.deployFrom0xArtifactAsync(
artifacts.DummyLiquidityProviderRegistry,
env.provider,
env.txDefaults,
{},
);
await registryContract
.setLiquidityProviderForMarket(xAsset, yAsset, liquidityProvider.address)
.awaitTransactionSuccessAsync();
});
it('should be able to get the liquidity provider', async () => {
const xyLiquidityProvider = await testContract
.getLiquidityProviderFromRegistry(registryContract.address, xAsset, yAsset)
.callAsync();
const yxLiquidityProvider = await testContract
.getLiquidityProviderFromRegistry(registryContract.address, yAsset, xAsset)
.callAsync();
const unknownLiquidityProvider = await testContract
.getLiquidityProviderFromRegistry(registryContract.address, yAsset, randomAddress())
.callAsync();
expect(xyLiquidityProvider).to.eq(liquidityProvider.address);
expect(yxLiquidityProvider).to.eq(liquidityProvider.address);
expect(unknownLiquidityProvider).to.eq(constants.NULL_ADDRESS);
});
it('should be able to query sells from the liquidity provider', async () => {
const result = await testContract
.sampleSellsFromLiquidityProviderRegistry(registryContract.address, yAsset, xAsset, sampleAmounts)
.callAsync();
result.forEach((value, idx) => {
expect(value).is.bignumber.eql(sampleAmounts[idx].minus(1));
});
});
it('should be able to query buys from the liquidity provider', async () => {
const result = await testContract
.sampleBuysFromLiquidityProviderRegistry(
registryContract.address,
yAsset,
xAsset,
sampleAmounts,
FAKE_BUY_OPTS,
)
.callAsync();
result.forEach((value, idx) => {
expect(value).is.bignumber.eql(sampleAmounts[idx].plus(1));
});
});
it('should just return zeros if the liquidity provider cannot be found', async () => {
const result = await testContract
.sampleBuysFromLiquidityProviderRegistry(
registryContract.address,
yAsset,
randomAddress(),
sampleAmounts,
FAKE_BUY_OPTS,
)
.callAsync();
result.forEach(value => {
expect(value).is.bignumber.eql(constants.ZERO_AMOUNT);
});
});
it('should just return zeros if the registry does not exist', async () => {
const result = await testContract
.sampleBuysFromLiquidityProviderRegistry(randomAddress(), yAsset, xAsset, sampleAmounts, FAKE_BUY_OPTS)
.callAsync();
result.forEach(value => {
expect(value).is.bignumber.eql(constants.ZERO_AMOUNT);
});
});
});
blockchainTests.resets('sampleSellsFromUniswapV2()', () => {
function predictSellQuotes(path: string[], sellAmounts: BigNumber[]): BigNumber[] {
return sellAmounts.map(a => getDeterministicUniswapV2SellQuote(path, a));
}
it('can return no quotes', async () => {
const quotes = await testContract.sampleSellsFromUniswapV2([TAKER_TOKEN, MAKER_TOKEN], []).callAsync();
expect(quotes).to.deep.eq([]);
});
it('can quote token -> token', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const expectedQuotes = predictSellQuotes([TAKER_TOKEN, MAKER_TOKEN], sampleAmounts);
const quotes = await testContract
.sampleSellsFromUniswapV2([TAKER_TOKEN, MAKER_TOKEN], sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if token -> token fails', async () => {
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleSellsFromUniswapV2([TAKER_TOKEN, MAKER_TOKEN], sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('can quote token -> token -> token', async () => {
const intermediateToken = randomAddress();
const sampleAmounts = getSampleAmounts(TAKER_TOKEN);
const expectedQuotes = predictSellQuotes([TAKER_TOKEN, intermediateToken, MAKER_TOKEN], sampleAmounts);
const quotes = await testContract
.sampleSellsFromUniswapV2([TAKER_TOKEN, intermediateToken, MAKER_TOKEN], sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
});
blockchainTests.resets('sampleBuysFromUniswapV2()', () => {
function predictBuyQuotes(path: string[], buyAmounts: BigNumber[]): BigNumber[] {
return buyAmounts.map(a => getDeterministicUniswapV2BuyQuote(path, a));
}
it('can return no quotes', async () => {
const quotes = await testContract.sampleBuysFromUniswapV2([TAKER_TOKEN, MAKER_TOKEN], []).callAsync();
expect(quotes).to.deep.eq([]);
});
it('can quote token -> token', async () => {
const sampleAmounts = getSampleAmounts(MAKER_TOKEN);
const expectedQuotes = predictBuyQuotes([TAKER_TOKEN, MAKER_TOKEN], sampleAmounts);
const quotes = await testContract
.sampleBuysFromUniswapV2([TAKER_TOKEN, MAKER_TOKEN], sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('returns zero if token -> token fails', async () => {
const sampleAmounts = getSampleAmounts(MAKER_TOKEN);
const expectedQuotes = _.times(sampleAmounts.length, () => constants.ZERO_AMOUNT);
await enableFailTriggerAsync();
const quotes = await testContract
.sampleBuysFromUniswapV2([TAKER_TOKEN, MAKER_TOKEN], sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
it('can quote token -> token -> token', async () => {
const intermediateToken = randomAddress();
const sampleAmounts = getSampleAmounts(MAKER_TOKEN);
const expectedQuotes = predictBuyQuotes([TAKER_TOKEN, intermediateToken, MAKER_TOKEN], sampleAmounts);
const quotes = await testContract
.sampleBuysFromUniswapV2([TAKER_TOKEN, intermediateToken, MAKER_TOKEN], sampleAmounts)
.callAsync();
expect(quotes).to.deep.eq(expectedQuotes);
});
});
describe('batchCall()', () => {
it('can call one function', async () => {
const orders = createOrders(MAKER_TOKEN, TAKER_TOKEN);
const signatures: string[] = _.times(orders.length, i => hexUtils.random());
const expected = orders.map(getDeterministicFillableTakerAssetAmount);
const calls = [
testContract.getOrderFillableTakerAssetAmounts(orders, signatures).getABIEncodedTransactionData(),
];
const r = await testContract.batchCall(calls).callAsync();
expect(r).to.be.length(1);
const actual = testContract.getABIDecodedReturnData<BigNumber[]>('getOrderFillableTakerAssetAmounts', r[0]);
expect(actual).to.deep.eq(expected);
});
it('can call two functions', async () => {
const numOrders = _.random(1, 10);
const orders = _.times(2, () => createOrders(MAKER_TOKEN, TAKER_TOKEN, numOrders));
const signatures: string[] = _.times(numOrders, i => hexUtils.random());
const expecteds = [
orders[0].map(getDeterministicFillableTakerAssetAmount),
orders[1].map(getDeterministicFillableMakerAssetAmount),
];
const calls = [
testContract.getOrderFillableTakerAssetAmounts(orders[0], signatures).getABIEncodedTransactionData(),
testContract.getOrderFillableMakerAssetAmounts(orders[1], signatures).getABIEncodedTransactionData(),
];
const r = await testContract.batchCall(calls).callAsync();
expect(r).to.be.length(2);
expect(testContract.getABIDecodedReturnData('getOrderFillableTakerAssetAmounts', r[0])).to.deep.eq(
expecteds[0],
);
expect(testContract.getABIDecodedReturnData('getOrderFillableMakerAssetAmounts', r[1])).to.deep.eq(
expecteds[1],
);
});
it('can make recursive calls', async () => {
const numOrders = _.random(1, 10);
const orders = createOrders(MAKER_TOKEN, TAKER_TOKEN, numOrders);
const signatures: string[] = _.times(numOrders, i => hexUtils.random());
const expected = orders.map(getDeterministicFillableTakerAssetAmount);
let r = await testContract
.batchCall([
testContract
.batchCall([
testContract
.getOrderFillableTakerAssetAmounts(orders, signatures)
.getABIEncodedTransactionData(),
])
.getABIEncodedTransactionData(),
])
.callAsync();
expect(r).to.be.length(1);
r = testContract.getABIDecodedReturnData<string[]>('batchCall', r[0]);
expect(r).to.be.length(1);
expect(testContract.getABIDecodedReturnData('getOrderFillableTakerAssetAmounts', r[0])).to.deep.eq(
expected,
);
});
});
});