import { assetDataUtils, orderHashUtils } from '@0xproject/order-utils';
import { AssetProxyId, SignedOrder } from '@0xproject/types';
import { BigNumber } from '@0xproject/utils';
import * as chai from 'chai';
import * as _ from 'lodash';
import { chaiSetup } from './chai_setup';
import { ERC20Wrapper } from './erc20_wrapper';
import { ERC721Wrapper } from './erc721_wrapper';
import { ExchangeWrapper } from './exchange_wrapper';
import { ERC20BalancesByOwner, ERC721TokenIdsByOwner, TransferAmountsByMatchOrders as TransferAmounts, OrderInfo, OrderStatus} from './types';
import { TransactionReceiptWithDecodedLogs } from '../../../../node_modules/ethereum-types';
chaiSetup.configure();
const expect = chai.expect;
export class MatchOrderTester {
private readonly _exchangeWrapper: ExchangeWrapper;
private readonly _erc20Wrapper: ERC20Wrapper;
private readonly _erc721Wrapper: ERC721Wrapper;
private readonly _feeTokenAddress: string;
private async _verifyBalancesAsync(
signedOrderLeft: SignedOrder,
signedOrderRight: SignedOrder,
initialERC20BalancesByOwner: ERC20BalancesByOwner,
initialERC721TokenIdsByOwner: ERC721TokenIdsByOwner,
finalERC20BalancesByOwner: ERC20BalancesByOwner,
finalERC721TokenIdsByOwner: ERC721TokenIdsByOwner,
expectedTransferAmounts: TransferAmounts,
takerAddress: string
)
{
let expectedERC20BalancesByOwner: ERC20BalancesByOwner;
let expectedERC721TokenIdsByOwner: ERC721TokenIdsByOwner;
[expectedERC20BalancesByOwner, expectedERC721TokenIdsByOwner] = this._calculateExpectedBalances(
signedOrderLeft,
signedOrderRight,
takerAddress,
initialERC20BalancesByOwner,
initialERC721TokenIdsByOwner,
expectedTransferAmounts,
);
// Verify balances of makers, taker, and fee recipients
await this._verifyMakerTakerAndFeeRecipientBalancesAsync(
signedOrderLeft,
signedOrderRight,
expectedERC20BalancesByOwner,
finalERC20BalancesByOwner,
expectedERC721TokenIdsByOwner,
finalERC721TokenIdsByOwner,
takerAddress
);
// Verify balances for all known accounts
await this._verifyAllKnownBalancesAsync(
expectedERC20BalancesByOwner,
finalERC20BalancesByOwner,
expectedERC721TokenIdsByOwner,
finalERC721TokenIdsByOwner,
);
}
private async _verifyMakerTakerAndFeeRecipientBalancesAsync(
signedOrderLeft: SignedOrder,
signedOrderRight: SignedOrder,
expectedERC20BalancesByOwner: ERC20BalancesByOwner,
realERC20BalancesByOwner: ERC20BalancesByOwner,
expectedERC721TokenIdsByOwner: ERC721TokenIdsByOwner,
realERC721TokenIdsByOwner: ERC721TokenIdsByOwner,
takerAddress: string
) {
// Individual balance comparisons
const makerAssetProxyIdLeft = assetDataUtils.decodeAssetProxyId(signedOrderLeft.makerAssetData);
const makerERC20AssetDataLeft = makerAssetProxyIdLeft == AssetProxyId.ERC20 ? assetDataUtils.decodeERC20AssetData(signedOrderLeft.makerAssetData) : assetDataUtils.decodeERC721AssetData(signedOrderLeft.makerAssetData);
const makerAssetAddressLeft = makerERC20AssetDataLeft.tokenAddress;
const makerAssetProxyIdRight = assetDataUtils.decodeAssetProxyId(signedOrderRight.makerAssetData);
const makerERC20AssetDataRight = makerAssetProxyIdRight == AssetProxyId.ERC20 ? assetDataUtils.decodeERC20AssetData(signedOrderRight.makerAssetData) : assetDataUtils.decodeERC721AssetData(signedOrderRight.makerAssetData);
const makerAssetAddressRight = makerERC20AssetDataRight.tokenAddress;
// describe('asdad', () => {
if(makerAssetProxyIdLeft == AssetProxyId.ERC20) {
expect(realERC20BalancesByOwner[signedOrderLeft.makerAddress][makerAssetAddressLeft], "Checking left maker egress ERC20 account balance").to.be.bignumber.equal(expectedERC20BalancesByOwner[signedOrderLeft.makerAddress][makerAssetAddressLeft]);
expect(realERC20BalancesByOwner[signedOrderRight.makerAddress][makerAssetAddressLeft], "Checking right maker ingress ERC20 account balance").to.be.bignumber.equal(expectedERC20BalancesByOwner[signedOrderRight.makerAddress][makerAssetAddressLeft]);
expect(realERC20BalancesByOwner[takerAddress][makerAssetAddressLeft], "Checking taker ingress ERC20 account balance").to.be.bignumber.equal(expectedERC20BalancesByOwner[takerAddress][makerAssetAddressLeft]);
} else if(makerAssetProxyIdLeft == AssetProxyId.ERC721) {
expect(realERC721TokenIdsByOwner[signedOrderLeft.makerAddress][makerAssetAddressLeft].sort(), "Checking left maker egress ERC721 account holdings").to.be.deep.equal(expectedERC721TokenIdsByOwner[signedOrderLeft.makerAddress][makerAssetAddressLeft].sort());
expect(realERC721TokenIdsByOwner[signedOrderRight.makerAddress][makerAssetAddressLeft].sort(), "Checking right maker ERC721 account holdings").to.be.deep.equal(expectedERC721TokenIdsByOwner[signedOrderRight.makerAddress][makerAssetAddressLeft].sort());
expect(realERC721TokenIdsByOwner[takerAddress][makerAssetAddressLeft].sort(), "Checking taker ingress ERC721 account holdings").to.be.deep.equal(expectedERC721TokenIdsByOwner[takerAddress][makerAssetAddressLeft].sort());
} else {
throw new Error(`Unhandled Asset Proxy ID: ${makerAssetProxyIdLeft}`);
}
if(makerAssetProxyIdRight == AssetProxyId.ERC20) {
expect(realERC20BalancesByOwner[signedOrderLeft.makerAddress][makerAssetAddressRight], "Checking left maker ingress ERC20 account balance").to.be.bignumber.equal(expectedERC20BalancesByOwner[signedOrderLeft.makerAddress][makerAssetAddressRight]);
expect(realERC20BalancesByOwner[signedOrderRight.makerAddress][makerAssetAddressRight], "Checking right maker egress ERC20 account balance").to.be.bignumber.equal(expectedERC20BalancesByOwner[signedOrderRight.makerAddress][makerAssetAddressRight]);
} else if(makerAssetProxyIdRight == AssetProxyId.ERC721) {
expect(realERC721TokenIdsByOwner[signedOrderLeft.makerAddress][makerAssetAddressRight].sort(), "Checking left maker ingress ERC721 account holdings").to.be.deep.equal(expectedERC721TokenIdsByOwner[signedOrderLeft.makerAddress][makerAssetAddressRight].sort());
expect(realERC721TokenIdsByOwner[signedOrderRight.makerAddress][makerAssetAddressRight], "Checking right maker agress ERC721 account holdings").to.be.deep.equal(expectedERC721TokenIdsByOwner[signedOrderRight.makerAddress][makerAssetAddressRight]);
} else {
throw new Error(`Unhandled Asset Proxy ID: ${makerAssetProxyIdRight}`);
}
// Paid fees
expect(realERC20BalancesByOwner[signedOrderLeft.makerAddress][this._feeTokenAddress], "Checking left maker egress ERC20 account fees").to.be.bignumber.equal(expectedERC20BalancesByOwner[signedOrderLeft.makerAddress][this._feeTokenAddress]);
expect(realERC20BalancesByOwner[signedOrderRight.makerAddress][this._feeTokenAddress], "Checking right maker egress ERC20 account fees").to.be.bignumber.equal(expectedERC20BalancesByOwner[signedOrderRight.makerAddress][this._feeTokenAddress]);
expect(realERC20BalancesByOwner[takerAddress][this._feeTokenAddress], "Checking taker egress ERC20 account fees").to.be.bignumber.equal(expectedERC20BalancesByOwner[takerAddress][this._feeTokenAddress]);
// Received fees
expect(realERC20BalancesByOwner[signedOrderLeft.feeRecipientAddress][this._feeTokenAddress], "Checking left fee recipient ingress ERC20 account fees").to.be.bignumber.equal(expectedERC20BalancesByOwner[signedOrderLeft.feeRecipientAddress][this._feeTokenAddress]);
expect(realERC20BalancesByOwner[signedOrderRight.feeRecipientAddress][this._feeTokenAddress], "Checking right fee receipient ingress ERC20 account fees").to.be.bignumber.equal(expectedERC20BalancesByOwner[signedOrderRight.feeRecipientAddress][this._feeTokenAddress]);
}
/// @dev Compares a pair of ERC20 balances and a pair of ERC721 token owners.
/// @param expectedNewERC20BalancesByOwner Expected ERC20 balances.
/// @param realERC20BalancesByOwner Actual ERC20 balances.
/// @param expectedNewERC721TokenIdsByOwner Expected ERC721 token owners.
/// @param realERC721TokenIdsByOwner Actual ERC20 token owners.
/// @return True only if ERC20 balances match and ERC721 token owners match.
private async _verifyAllKnownBalancesAsync(
expectedNewERC20BalancesByOwner: ERC20BalancesByOwner,
realERC20BalancesByOwner: ERC20BalancesByOwner,
expectedNewERC721TokenIdsByOwner: ERC721TokenIdsByOwner,
realERC721TokenIdsByOwner: ERC721TokenIdsByOwner,
) {
// ERC20 Balances
const erc20BalancesMatch = _.isEqual(expectedNewERC20BalancesByOwner, realERC20BalancesByOwner);
expect(erc20BalancesMatch, "Checking all known ERC20 account balances").to.be.true();
// ERC721 Token Ids
const sortedExpectedNewERC721TokenIdsByOwner = _.mapValues(
expectedNewERC721TokenIdsByOwner,
tokenIdsByOwner => {
_.mapValues(tokenIdsByOwner, tokenIds => {
_.sortBy(tokenIds);
});
},
);
const sortedNewERC721TokenIdsByOwner = _.mapValues(realERC721TokenIdsByOwner, tokenIdsByOwner => {
_.mapValues(tokenIdsByOwner, tokenIds => {
_.sortBy(tokenIds);
});
});
const erc721TokenIdsMatch = _.isEqual(
sortedExpectedNewERC721TokenIdsByOwner,
sortedNewERC721TokenIdsByOwner,
);
expect(erc721TokenIdsMatch, "Checking all known ERC721 account balances").to.be.true();
}
private async _verifyInitialOrderStates(
signedOrderLeft: SignedOrder,
signedOrderRight: SignedOrder,
initialTakerAssetFilledAmountLeft?: BigNumber,
initialTakerAssetFilledAmountRight?: BigNumber,
): Promise<[BigNumber, BigNumber]> {
// Verify Left order preconditions
const orderTakerAssetFilledAmountLeft = await this._exchangeWrapper.getTakerAssetFilledAmountAsync(
orderHashUtils.getOrderHashHex(signedOrderLeft),
);
const expectedOrderFilledAmountLeft = initialTakerAssetFilledAmountLeft
? initialTakerAssetFilledAmountLeft
: new BigNumber(0);
expect(expectedOrderFilledAmountLeft).to.be.bignumber.equal(orderTakerAssetFilledAmountLeft);
// Verify Right order preconditions
const orderTakerAssetFilledAmountRight = await this._exchangeWrapper.getTakerAssetFilledAmountAsync(
orderHashUtils.getOrderHashHex(signedOrderRight),
);
const expectedOrderFilledAmountRight = initialTakerAssetFilledAmountRight
? initialTakerAssetFilledAmountRight
: new BigNumber(0);
expect(expectedOrderFilledAmountRight).to.be.bignumber.equal(orderTakerAssetFilledAmountRight);
return [orderTakerAssetFilledAmountLeft, orderTakerAssetFilledAmountRight];
}
/// @dev Constructs new MatchOrderTester.
/// @param exchangeWrapper Used to call to the Exchange.
/// @param erc20Wrapper Used to fetch ERC20 balances.
/// @param erc721Wrapper Used to fetch ERC721 token owners.
/// @param feeTokenAddress Address of ERC20 fee token.
constructor(
exchangeWrapper: ExchangeWrapper,
erc20Wrapper: ERC20Wrapper,
erc721Wrapper: ERC721Wrapper,
feeTokenAddress: string,
) {
this._exchangeWrapper = exchangeWrapper;
this._erc20Wrapper = erc20Wrapper;
this._erc721Wrapper = erc721Wrapper;
this._feeTokenAddress = feeTokenAddress;
}
/// @dev Matches two complementary orders and validates results.
/// Validation either succeeds or throws.
/// @param signedOrderLeft First matched order.
/// @param signedOrderRight Second matched order.
/// @param takerAddress Address of taker (the address who matched the two orders)
/// @param erc20BalancesByOwner Current ERC20 balances.
/// @param erc721TokenIdsByOwner Current ERC721 token owners.
/// @param initialTakerAssetFilledAmountLeft Current amount the left order has been filled.
/// @param initialTakerAssetFilledAmountRight Current amount the right order has been filled.
/// @return New ERC20 balances & ERC721 token owners.
public async matchOrdersAndVerifyBalancesAsync(
signedOrderLeft: SignedOrder,
signedOrderRight: SignedOrder,
takerAddress: string,
erc20BalancesByOwner: ERC20BalancesByOwner,
erc721TokenIdsByOwner: ERC721TokenIdsByOwner,
expectedTransferAmounts: TransferAmounts,
initialTakerAssetFilledAmountLeft?: BigNumber,
initialTakerAssetFilledAmountRight?: BigNumber,
): Promise<[ERC20BalancesByOwner, ERC721TokenIdsByOwner]> {
// Verify initial order states
let orderTakerAssetFilledAmountLeft: BigNumber;
let orderTakerAssetFilledAmountRight: BigNumber;
[orderTakerAssetFilledAmountLeft, orderTakerAssetFilledAmountRight] = await this._verifyInitialOrderStates(
signedOrderLeft,
signedOrderRight,
initialTakerAssetFilledAmountLeft,
initialTakerAssetFilledAmountRight
);
// Match left & right orders
const transactionReceipt = await this._exchangeWrapper.matchOrdersAsync(signedOrderLeft, signedOrderRight, takerAddress);
const newERC20BalancesByOwner = await this._erc20Wrapper.getBalancesAsync();
const newERC721TokenIdsByOwner = await this._erc721Wrapper.getBalancesAsync();
// Verify logs
await this._verifyLogsAsync(
signedOrderLeft,
signedOrderRight,
transactionReceipt,
takerAddress,
expectedTransferAmounts
);
// Verify exchange state
await this._verifyExchangeStateAsync(
signedOrderLeft,
signedOrderRight,
orderTakerAssetFilledAmountLeft,
orderTakerAssetFilledAmountRight,
expectedTransferAmounts,
initialTakerAssetFilledAmountLeft,
initialTakerAssetFilledAmountRight
);
// Verify balances of makers, taker, and fee recipients
await this._verifyBalancesAsync(
signedOrderLeft,
signedOrderRight,
erc20BalancesByOwner,
erc721TokenIdsByOwner,
newERC20BalancesByOwner,
newERC721TokenIdsByOwner,
expectedTransferAmounts,
takerAddress
);
return [newERC20BalancesByOwner, newERC721TokenIdsByOwner];
}
/// @dev Calculates expected transfer amounts between order makers, fee recipients, and
/// the taker when two orders are matched.
/// @param signedOrderLeft First matched order.
/// @param signedOrderRight Second matched order.
/// @param orderTakerAssetFilledAmountLeft How much left order has been filled, prior to matching orders.
/// @param orderTakerAssetFilledAmountRight How much the right order has been filled, prior to matching orders.
/// @return TransferAmounts A struct containing the expected transfer amounts.
private async _verifyLogsAsync(
signedOrderLeft: SignedOrder,
signedOrderRight: SignedOrder,
transactionReceipt: TransactionReceiptWithDecodedLogs,
takerAddress: string,
expectedTransferAmounts: TransferAmounts
) {
// Parse logs
expect(transactionReceipt.logs.length, "Checking number of logs").to.be.equal(2);
// First log is for left fill
const leftLog = ((transactionReceipt.logs[0] as any) as {args: { makerAddress: string, takerAddress: string, makerAssetFilledAmount: string, takerAssetFilledAmount: string, makerFeePaid: string, takerFeePaid: string}});
expect(leftLog.args.makerAddress, "Checking logged maker address of left order").to.be.equal(signedOrderLeft.makerAddress);
expect(leftLog.args.takerAddress, "Checking logged taker address of right order").to.be.equal(takerAddress);
const amountBoughtByLeftMaker = new BigNumber(leftLog.args.takerAssetFilledAmount);
const amountSoldByLeftMaker = new BigNumber(leftLog.args.makerAssetFilledAmount);
const feePaidByLeftMaker = new BigNumber(leftLog.args.makerFeePaid);
const feePaidByTakerLeft = new BigNumber(leftLog.args.takerFeePaid);
// Second log is for right fill
const rightLog = ((transactionReceipt.logs[1] as any) as {args: { makerAddress: string, takerAddress: string, makerAssetFilledAmount: string, takerAssetFilledAmount: string, makerFeePaid: string, takerFeePaid: string}});
expect(rightLog.args.makerAddress, "Checking logged maker address of right order").to.be.equal(signedOrderRight.makerAddress);
expect(rightLog.args.takerAddress, "Checking loggerd taker address of right order").to.be.equal(takerAddress);
const amountBoughtByRightMaker = new BigNumber(rightLog.args.takerAssetFilledAmount);
const amountSoldByRightMaker = new BigNumber(rightLog.args.makerAssetFilledAmount);
const feePaidByRightMaker = new BigNumber(rightLog.args.makerFeePaid);
const feePaidByTakerRight = new BigNumber(rightLog.args.takerFeePaid);
// Derive amount received by taker
const amountReceivedByTaker = amountSoldByLeftMaker.sub(amountBoughtByRightMaker);
// Verify log values - left order
expect(expectedTransferAmounts.amountBoughtByLeftMaker, "Checking logged amount bought by left maker").to.be.bignumber.equal(amountBoughtByLeftMaker);
expect(expectedTransferAmounts.amountSoldByLeftMaker, "Checking logged amount sold by left maker").to.be.bignumber.equal(amountSoldByLeftMaker);
expect(expectedTransferAmounts.feePaidByLeftMaker, "Checking logged fee paid by left maker").to.be.bignumber.equal(feePaidByLeftMaker);
expect(expectedTransferAmounts.feePaidByTakerLeft, "Checking logged fee paid on left order by taker").to.be.bignumber.equal(feePaidByTakerLeft);
// Verify log values - right order
expect(expectedTransferAmounts.amountBoughtByRightMaker, "Checking logged amount bought by right maker").to.be.bignumber.equal(amountBoughtByRightMaker);
expect(expectedTransferAmounts.amountSoldByRightMaker, "Checking logged amount sold by right maker").to.be.bignumber.equal(amountSoldByRightMaker);
expect(expectedTransferAmounts.feePaidByRightMaker, "Checking logged fee paid by right maker").to.be.bignumber.equal(feePaidByRightMaker);
expect(expectedTransferAmounts.feePaidByTakerRight, "Checking logged fee paid on right order by taker").to.be.bignumber.equal(feePaidByTakerRight);
// Verify derived amount received by taker
expect(expectedTransferAmounts.amountReceivedByTaker, "Checking logged amount received by taker").to.be.bignumber.equal(amountReceivedByTaker);
}
/// @dev Calculates expected transfer amounts between order makers, fee recipients, and
/// the taker when two orders are matched.
/// @param signedOrderLeft First matched order.
/// @param signedOrderRight Second matched order.
/// @param orderTakerAssetFilledAmountLeft How much left order has been filled, prior to matching orders.
/// @param orderTakerAssetFilledAmountRight How much the right order has been filled, prior to matching orders.
/// @return TransferAmounts A struct containing the expected transfer amounts.
private async _verifyExchangeStateAsync(
signedOrderLeft: SignedOrder,
signedOrderRight: SignedOrder,
orderTakerAssetFilledAmountLeft: BigNumber,
orderTakerAssetFilledAmountRight: BigNumber,
expectedTransferAmounts: TransferAmounts,
initialTakerAssetFilledAmountLeft?: BigNumber,
initialTakerAssetFilledAmountRight?: BigNumber
) {
// Verify state for left order: amount bought by left maker
let amountBoughtByLeftMaker = await this._exchangeWrapper.getTakerAssetFilledAmountAsync(
orderHashUtils.getOrderHashHex(signedOrderLeft),
);
amountBoughtByLeftMaker = amountBoughtByLeftMaker.minus(orderTakerAssetFilledAmountLeft);
expect(expectedTransferAmounts.amountBoughtByLeftMaker, "Checking exchange state for left order").to.be.bignumber.equal(amountBoughtByLeftMaker);
// Verify state for right order: amount bought by right maker
let amountBoughtByRightMaker = await this._exchangeWrapper.getTakerAssetFilledAmountAsync(
orderHashUtils.getOrderHashHex(signedOrderRight),
);
amountBoughtByRightMaker = amountBoughtByRightMaker.minus(orderTakerAssetFilledAmountRight);
expect(expectedTransferAmounts.amountBoughtByRightMaker, "Checking exchange state for right order").to.be.bignumber.equal(amountBoughtByRightMaker);
// Verify left order status
const maxAmountBoughtByLeftMaker = initialTakerAssetFilledAmountLeft
? signedOrderLeft.takerAssetAmount.sub(initialTakerAssetFilledAmountLeft)
: signedOrderLeft.takerAssetAmount;
const leftOrderInfo: OrderInfo = await this._exchangeWrapper.getOrderInfoAsync(signedOrderLeft);
const leftExpectedStatus = (expectedTransferAmounts.amountBoughtByLeftMaker.equals(maxAmountBoughtByLeftMaker)) ? OrderStatus.FULLY_FILLED : OrderStatus.FILLABLE;
expect(leftOrderInfo.orderStatus as OrderStatus, "Checking exchange status for left order").to.be.equal(leftExpectedStatus);
// Verify right order status
const maxAmountBoughtByRightMaker = initialTakerAssetFilledAmountRight
? signedOrderRight.takerAssetAmount.sub(initialTakerAssetFilledAmountRight)
: signedOrderRight.takerAssetAmount;
const rightOrderInfo: OrderInfo = await this._exchangeWrapper.getOrderInfoAsync(signedOrderRight);
const rightExpectedStatus = (expectedTransferAmounts.amountBoughtByRightMaker.equals(maxAmountBoughtByRightMaker)) ? OrderStatus.FULLY_FILLED : OrderStatus.FILLABLE;
expect(rightOrderInfo.orderStatus as OrderStatus, "Checking exchange status for right order").to.be.equal(rightExpectedStatus);
}
/// @dev Calculates the expected balances of order makers, fee recipients, and the taker,
/// as a result of matching two orders.
/// @param signedOrderRight First matched order.
/// @param signedOrderRight Second matched order.
/// @param takerAddress Address of taker (the address who matched the two orders)
/// @param erc20BalancesByOwner Current ERC20 balances.
/// @param erc721TokenIdsByOwner Current ERC721 token owners.
/// @param expectedTransferAmounts A struct containing the expected transfer amounts.
/// @return Expected ERC20 balances & ERC721 token owners after orders have been matched.
private _calculateExpectedBalances(
signedOrderLeft: SignedOrder,
signedOrderRight: SignedOrder,
takerAddress: string,
erc20BalancesByOwner: ERC20BalancesByOwner,
erc721TokenIdsByOwner: ERC721TokenIdsByOwner,
expectedTransferAmounts: TransferAmounts,
): [ERC20BalancesByOwner, ERC721TokenIdsByOwner] {
const makerAddressLeft = signedOrderLeft.makerAddress;
const makerAddressRight = signedOrderRight.makerAddress;
const feeRecipientAddressLeft = signedOrderLeft.feeRecipientAddress;
const feeRecipientAddressRight = signedOrderRight.feeRecipientAddress;
// Operations are performed on copies of the balances
const expectedNewERC20BalancesByOwner = _.cloneDeep(erc20BalancesByOwner);
const expectedNewERC721TokenIdsByOwner = _.cloneDeep(erc721TokenIdsByOwner);
// Left Maker Asset (Right Taker Asset)
const makerAssetProxyIdLeft = assetDataUtils.decodeAssetProxyId(signedOrderLeft.makerAssetData);
if (makerAssetProxyIdLeft === AssetProxyId.ERC20) {
// Decode asset data
const erc20AssetData = assetDataUtils.decodeERC20AssetData(signedOrderLeft.makerAssetData);
const makerAssetAddressLeft = erc20AssetData.tokenAddress;
const takerAssetAddressRight = makerAssetAddressLeft;
// Left Maker
expectedNewERC20BalancesByOwner[makerAddressLeft][makerAssetAddressLeft] = expectedNewERC20BalancesByOwner[
makerAddressLeft
][makerAssetAddressLeft].minus(expectedTransferAmounts.amountSoldByLeftMaker);
// Right Maker
expectedNewERC20BalancesByOwner[makerAddressRight][
takerAssetAddressRight
] = expectedNewERC20BalancesByOwner[makerAddressRight][takerAssetAddressRight].add(
expectedTransferAmounts.amountBoughtByRightMaker,
);
// Taker
expectedNewERC20BalancesByOwner[takerAddress][makerAssetAddressLeft] = expectedNewERC20BalancesByOwner[
takerAddress
][makerAssetAddressLeft].add(expectedTransferAmounts.amountReceivedByTaker);
} else if (makerAssetProxyIdLeft === AssetProxyId.ERC721) {
// Decode asset data
const erc721AssetData = assetDataUtils.decodeERC721AssetData(signedOrderLeft.makerAssetData);
const makerAssetAddressLeft = erc721AssetData.tokenAddress;
const makerAssetIdLeft = erc721AssetData.tokenId;
const takerAssetAddressRight = makerAssetAddressLeft;
const takerAssetIdRight = makerAssetIdLeft;
// Left Maker
_.remove(expectedNewERC721TokenIdsByOwner[makerAddressLeft][makerAssetAddressLeft], makerAssetIdLeft);
// Right Maker
expectedNewERC721TokenIdsByOwner[makerAddressRight][takerAssetAddressRight].push(takerAssetIdRight);
// Taker: Since there is only 1 asset transferred, the taker does not receive any of the left maker asset.
}
// Left Taker Asset (Right Maker Asset)
// Note: This exchange is only between the order makers: the Taker does not receive any of the left taker asset.
const takerAssetProxyIdLeft = assetDataUtils.decodeAssetProxyId(signedOrderLeft.takerAssetData);
if (takerAssetProxyIdLeft === AssetProxyId.ERC20) {
// Decode asset data
const erc20AssetData = assetDataUtils.decodeERC20AssetData(signedOrderLeft.takerAssetData);
const takerAssetAddressLeft = erc20AssetData.tokenAddress;
const makerAssetAddressRight = takerAssetAddressLeft;
// Left Maker
expectedNewERC20BalancesByOwner[makerAddressLeft][takerAssetAddressLeft] = expectedNewERC20BalancesByOwner[
makerAddressLeft
][takerAssetAddressLeft].add(expectedTransferAmounts.amountBoughtByLeftMaker);
// Right Maker
expectedNewERC20BalancesByOwner[makerAddressRight][
makerAssetAddressRight
] = expectedNewERC20BalancesByOwner[makerAddressRight][makerAssetAddressRight].minus(
expectedTransferAmounts.amountSoldByRightMaker,
);
} else if (takerAssetProxyIdLeft === AssetProxyId.ERC721) {
// Decode asset data
const erc721AssetData = assetDataUtils.decodeERC721AssetData(signedOrderRight.makerAssetData);
const makerAssetAddressRight = erc721AssetData.tokenAddress;
const makerAssetIdRight = erc721AssetData.tokenId;
const takerAssetAddressLeft = makerAssetAddressRight;
const takerAssetIdLeft = makerAssetIdRight;
// Right Maker
_.remove(expectedNewERC721TokenIdsByOwner[makerAddressRight][makerAssetAddressRight], makerAssetIdRight);
// Left Maker
expectedNewERC721TokenIdsByOwner[makerAddressLeft][takerAssetAddressLeft].push(takerAssetIdLeft);
}
// Left Maker Fees
expectedNewERC20BalancesByOwner[makerAddressLeft][this._feeTokenAddress] = expectedNewERC20BalancesByOwner[
makerAddressLeft
][this._feeTokenAddress].minus(expectedTransferAmounts.feePaidByLeftMaker);
// Right Maker Fees
expectedNewERC20BalancesByOwner[makerAddressRight][this._feeTokenAddress] = expectedNewERC20BalancesByOwner[
makerAddressRight
][this._feeTokenAddress].minus(expectedTransferAmounts.feePaidByRightMaker);
// Taker Fees
expectedNewERC20BalancesByOwner[takerAddress][this._feeTokenAddress] = expectedNewERC20BalancesByOwner[
takerAddress
][this._feeTokenAddress].minus(expectedTransferAmounts.feePaidByTakerLeft.add(expectedTransferAmounts.feePaidByTakerRight));
// Left Fee Recipient Fees
expectedNewERC20BalancesByOwner[feeRecipientAddressLeft][
this._feeTokenAddress
] = expectedNewERC20BalancesByOwner[feeRecipientAddressLeft][this._feeTokenAddress].add(
expectedTransferAmounts.feePaidByLeftMaker.add(expectedTransferAmounts.feePaidByTakerLeft),
);
// Right Fee Recipient Fees
expectedNewERC20BalancesByOwner[feeRecipientAddressRight][
this._feeTokenAddress
] = expectedNewERC20BalancesByOwner[feeRecipientAddressRight][this._feeTokenAddress].add(
expectedTransferAmounts.feePaidByRightMaker.add(expectedTransferAmounts.feePaidByTakerRight),
);
return [expectedNewERC20BalancesByOwner, expectedNewERC721TokenIdsByOwner];
}
}