import { BlockchainLifecycle } from '@0xproject/dev-utils';
import { assetProxyUtils, generatePseudoRandomSalt } from '@0xproject/order-utils';
import { RevertReason } from '@0xproject/types';
import { BigNumber } from '@0xproject/utils';
import * as chai from 'chai';
import { LogWithDecodedArgs } from 'ethereum-types';
import ethUtil = require('ethereumjs-util');
import * as _ from 'lodash';
import { DummyERC20TokenContract } from '../../src/generated_contract_wrappers/dummy_e_r_c20_token';
import {
DummyERC721ReceiverContract,
TokenReceivedContractEventArgs,
} from '../../src/generated_contract_wrappers/dummy_e_r_c721_receiver';
import { DummyERC721TokenContract } from '../../src/generated_contract_wrappers/dummy_e_r_c721_token';
import { ERC20ProxyContract } from '../../src/generated_contract_wrappers/e_r_c20_proxy';
import { ERC721ProxyContract } from '../../src/generated_contract_wrappers/e_r_c721_proxy';
import { IAssetProxyContract } from '../../src/generated_contract_wrappers/i_asset_proxy';
import { artifacts } from '../../src/utils/artifacts';
import { expectRevertReasonOrAlwaysFailingTransactionAsync } from '../../src/utils/assertions';
import { chaiSetup } from '../../src/utils/chai_setup';
import { constants } from '../../src/utils/constants';
import { ERC20Wrapper } from '../../src/utils/erc20_wrapper';
import { ERC721Wrapper } from '../../src/utils/erc721_wrapper';
import { LogDecoder } from '../../src/utils/log_decoder';
import { provider, txDefaults, web3Wrapper } from '../../src/utils/web3_wrapper';
chaiSetup.configure();
const expect = chai.expect;
const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
// tslint:disable:no-unnecessary-type-assertion
describe('Asset Transfer Proxies', () => {
let owner: string;
let notAuthorized: string;
let exchangeAddress: string;
let makerAddress: string;
let takerAddress: string;
let zrxToken: DummyERC20TokenContract;
let erc721Token: DummyERC721TokenContract;
let erc721Receiver: DummyERC721ReceiverContract;
let erc20Proxy: ERC20ProxyContract;
let erc721Proxy: ERC721ProxyContract;
let assetProxyInterface: IAssetProxyContract;
let erc20Wrapper: ERC20Wrapper;
let erc721Wrapper: ERC721Wrapper;
let erc721MakerTokenId: BigNumber;
before(async () => {
await blockchainLifecycle.startAsync();
});
after(async () => {
await blockchainLifecycle.revertAsync();
});
before(async () => {
const accounts = await web3Wrapper.getAvailableAddressesAsync();
const usedAddresses = ([owner, notAuthorized, exchangeAddress, makerAddress, takerAddress] = _.slice(
accounts,
0,
5,
));
erc20Wrapper = new ERC20Wrapper(provider, usedAddresses, owner);
erc721Wrapper = new ERC721Wrapper(provider, usedAddresses, owner);
const numDummyErc20ToDeploy = 1;
[zrxToken] = await erc20Wrapper.deployDummyTokensAsync(numDummyErc20ToDeploy, constants.DUMMY_TOKEN_DECIMALS);
erc20Proxy = await erc20Wrapper.deployProxyAsync();
await erc20Wrapper.setBalancesAndAllowancesAsync();
await web3Wrapper.awaitTransactionSuccessAsync(
await erc20Proxy.addAuthorizedAddress.sendTransactionAsync(exchangeAddress, {
from: owner,
}),
constants.AWAIT_TRANSACTION_MINED_MS,
);
[erc721Token] = await erc721Wrapper.deployDummyTokensAsync();
erc721Proxy = await erc721Wrapper.deployProxyAsync();
await erc721Wrapper.setBalancesAndAllowancesAsync();
const erc721Balances = await erc721Wrapper.getBalancesAsync();
erc721MakerTokenId = erc721Balances[makerAddress][erc721Token.address][0];
await web3Wrapper.awaitTransactionSuccessAsync(
await erc721Proxy.addAuthorizedAddress.sendTransactionAsync(exchangeAddress, {
from: owner,
}),
constants.AWAIT_TRANSACTION_MINED_MS,
);
erc721Receiver = await DummyERC721ReceiverContract.deployFrom0xArtifactAsync(
artifacts.DummyERC721Receiver,
provider,
txDefaults,
);
assetProxyInterface = await IAssetProxyContract.deployFrom0xArtifactAsync(
artifacts.IAssetProxy,
provider,
txDefaults,
);
});
beforeEach(async () => {
await blockchainLifecycle.startAsync();
});
afterEach(async () => {
await blockchainLifecycle.revertAsync();
});
describe('Transfer Proxy - ERC20', () => {
describe('transferFrom', () => {
it('should successfully transfer tokens', async () => {
// Construct ERC20 asset data
const encodedAssetData = assetProxyUtils.encodeERC20AssetData(zrxToken.address);
// Perform a transfer from makerAddress to takerAddress
const erc20Balances = await erc20Wrapper.getBalancesAsync();
const amount = new BigNumber(10);
const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
encodedAssetData,
makerAddress,
takerAddress,
amount,
);
await web3Wrapper.awaitTransactionSuccessAsync(
await web3Wrapper.sendTransactionAsync({
to: erc20Proxy.address,
data,
from: exchangeAddress,
}),
constants.AWAIT_TRANSACTION_MINED_MS,
);
// Verify transfer was successful
const newBalances = await erc20Wrapper.getBalancesAsync();
expect(newBalances[makerAddress][zrxToken.address]).to.be.bignumber.equal(
erc20Balances[makerAddress][zrxToken.address].minus(amount),
);
expect(newBalances[takerAddress][zrxToken.address]).to.be.bignumber.equal(
erc20Balances[takerAddress][zrxToken.address].add(amount),
);
});
it('should do nothing if transferring 0 amount of a token', async () => {
// Construct ERC20 asset data
const encodedAssetData = assetProxyUtils.encodeERC20AssetData(zrxToken.address);
// Perform a transfer from makerAddress to takerAddress
const erc20Balances = await erc20Wrapper.getBalancesAsync();
const amount = new BigNumber(0);
const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
encodedAssetData,
makerAddress,
takerAddress,
amount,
);
await web3Wrapper.awaitTransactionSuccessAsync(
await web3Wrapper.sendTransactionAsync({
to: erc20Proxy.address,
data,
from: exchangeAddress,
}),
constants.AWAIT_TRANSACTION_MINED_MS,
);
// Verify transfer was successful
const newBalances = await erc20Wrapper.getBalancesAsync();
expect(newBalances[makerAddress][zrxToken.address]).to.be.bignumber.equal(
erc20Balances[makerAddress][zrxToken.address],
);
expect(newBalances[takerAddress][zrxToken.address]).to.be.bignumber.equal(
erc20Balances[takerAddress][zrxToken.address],
);
});
it('should throw if allowances are too low', async () => {
// Construct ERC20 asset data
const encodedAssetData = assetProxyUtils.encodeERC20AssetData(zrxToken.address);
// Create allowance less than transfer amount. Set allowance on proxy.
const allowance = new BigNumber(0);
const amount = new BigNumber(10);
const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
encodedAssetData,
makerAddress,
takerAddress,
amount,
);
await web3Wrapper.awaitTransactionSuccessAsync(
await zrxToken.approve.sendTransactionAsync(erc20Proxy.address, allowance, {
from: makerAddress,
}),
constants.AWAIT_TRANSACTION_MINED_MS,
);
// Perform a transfer; expect this to fail.
return expectRevertReasonOrAlwaysFailingTransactionAsync(
web3Wrapper.sendTransactionAsync({
to: erc20Proxy.address,
data,
from: exchangeAddress,
}),
RevertReason.TransferFailed,
);
});
it('should throw if requesting address is not authorized', async () => {
// Construct ERC20 asset data
const encodedAssetData = assetProxyUtils.encodeERC20AssetData(zrxToken.address);
// Perform a transfer from makerAddress to takerAddress
const amount = new BigNumber(10);
const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
encodedAssetData,
makerAddress,
takerAddress,
amount,
);
return expectRevertReasonOrAlwaysFailingTransactionAsync(
web3Wrapper.sendTransactionAsync({
to: erc20Proxy.address,
data,
from: notAuthorized,
}),
RevertReason.SenderNotAuthorized,
);
});
});
it('should have an id of 0xf47261b0', async () => {
const proxyId = await erc20Proxy.getProxyId.callAsync();
const expectedProxyId = '0xf47261b0';
expect(proxyId).to.equal(expectedProxyId);
});
});
describe('Transfer Proxy - ERC721', () => {
describe('transferFrom', () => {
it('should successfully transfer tokens', async () => {
// Construct ERC721 asset data
const encodedAssetData = assetProxyUtils.encodeERC721AssetData(erc721Token.address, erc721MakerTokenId);
// Verify pre-condition
const ownerMakerAsset = await erc721Token.ownerOf.callAsync(erc721MakerTokenId);
expect(ownerMakerAsset).to.be.bignumber.equal(makerAddress);
// Perform a transfer from makerAddress to takerAddress
const amount = new BigNumber(1);
const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
encodedAssetData,
makerAddress,
takerAddress,
amount,
);
await web3Wrapper.awaitTransactionSuccessAsync(
await web3Wrapper.sendTransactionAsync({
to: erc721Proxy.address,
data,
from: exchangeAddress,
}),
constants.AWAIT_TRANSACTION_MINED_MS,
);
// Verify transfer was successful
const newOwnerMakerAsset = await erc721Token.ownerOf.callAsync(erc721MakerTokenId);
expect(newOwnerMakerAsset).to.be.bignumber.equal(takerAddress);
});
it('should call onERC721Received when transferring to a smart contract without receiver data', async () => {
// Construct ERC721 asset data
const encodedAssetData = assetProxyUtils.encodeERC721AssetData(erc721Token.address, erc721MakerTokenId);
// Verify pre-condition
const ownerMakerAsset = await erc721Token.ownerOf.callAsync(erc721MakerTokenId);
expect(ownerMakerAsset).to.be.bignumber.equal(makerAddress);
// Perform a transfer from makerAddress to takerAddress
const amount = new BigNumber(1);
const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
encodedAssetData,
makerAddress,
erc721Receiver.address,
amount,
);
const logDecoder = new LogDecoder(web3Wrapper, erc721Receiver.address);
const tx = await logDecoder.getTxWithDecodedLogsAsync(
await web3Wrapper.sendTransactionAsync({
to: erc721Proxy.address,
data,
from: exchangeAddress,
gas: constants.TRANSFER_FROM_GAS,
}),
);
// Verify that no log was emitted by erc721 receiver
expect(tx.logs.length).to.be.equal(1);
const tokenReceivedLog = tx.logs[0] as LogWithDecodedArgs<TokenReceivedContractEventArgs>;
expect(tokenReceivedLog.args.from).to.be.equal(makerAddress);
expect(tokenReceivedLog.args.tokenId).to.be.bignumber.equal(erc721MakerTokenId);
expect(tokenReceivedLog.args.data).to.be.equal(constants.NULL_BYTES);
// Verify transfer was successful
const newOwnerMakerAsset = await erc721Token.ownerOf.callAsync(erc721MakerTokenId);
expect(newOwnerMakerAsset).to.be.bignumber.equal(erc721Receiver.address);
});
it('should call onERC721Received when transferring to a smart contract with receiver data', async () => {
// Construct ERC721 asset data
const receiverData = ethUtil.bufferToHex(assetProxyUtils.encodeUint256(generatePseudoRandomSalt()));
const encodedAssetData = assetProxyUtils.encodeERC721AssetData(
erc721Token.address,
erc721MakerTokenId,
receiverData,
);
// Verify pre-condition
const ownerMakerAsset = await erc721Token.ownerOf.callAsync(erc721MakerTokenId);
expect(ownerMakerAsset).to.be.bignumber.equal(makerAddress);
// Perform a transfer from makerAddress to takerAddress
const amount = new BigNumber(1);
const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
encodedAssetData,
makerAddress,
erc721Receiver.address,
amount,
);
const logDecoder = new LogDecoder(web3Wrapper, erc721Receiver.address);
const tx = await logDecoder.getTxWithDecodedLogsAsync(
await web3Wrapper.sendTransactionAsync({
to: erc721Proxy.address,
data,
from: exchangeAddress,
gas: constants.TRANSFER_FROM_GAS,
}),
);
// Validate log emitted by erc721 receiver
expect(tx.logs.length).to.be.equal(1);
const tokenReceivedLog = tx.logs[0] as LogWithDecodedArgs<TokenReceivedContractEventArgs>;
expect(tokenReceivedLog.args.from).to.be.equal(makerAddress);
expect(tokenReceivedLog.args.tokenId).to.be.bignumber.equal(erc721MakerTokenId);
expect(tokenReceivedLog.args.data).to.be.equal(receiverData);
// Verify transfer was successful
const newOwnerMakerAsset = await erc721Token.ownerOf.callAsync(erc721MakerTokenId);
expect(newOwnerMakerAsset).to.be.bignumber.equal(erc721Receiver.address);
});
it('should throw if there is receiver data but contract does not have onERC721Received', async () => {
// Construct ERC721 asset data
const receiverData = ethUtil.bufferToHex(assetProxyUtils.encodeUint256(generatePseudoRandomSalt()));
const encodedAssetData = assetProxyUtils.encodeERC721AssetData(
erc721Token.address,
erc721MakerTokenId,
receiverData,
);
// Verify pre-condition
const ownerMakerAsset = await erc721Token.ownerOf.callAsync(erc721MakerTokenId);
expect(ownerMakerAsset).to.be.bignumber.equal(makerAddress);
// Perform a transfer from makerAddress to takerAddress
const amount = new BigNumber(1);
const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
encodedAssetData,
makerAddress,
erc20Proxy.address, // the ERC20 proxy does not have an ERC721 receiver
amount,
);
return expectRevertReasonOrAlwaysFailingTransactionAsync(
web3Wrapper.sendTransactionAsync({
to: erc721Proxy.address,
data,
from: exchangeAddress,
gas: constants.TRANSFER_FROM_GAS,
}),
RevertReason.TransferFailed,
);
});
it('should throw if transferring 0 amount of a token', async () => {
// Construct ERC721 asset data
const encodedAssetData = assetProxyUtils.encodeERC721AssetData(erc721Token.address, erc721MakerTokenId);
// Verify pre-condition
const ownerMakerAsset = await erc721Token.ownerOf.callAsync(erc721MakerTokenId);
expect(ownerMakerAsset).to.be.bignumber.equal(makerAddress);
// Perform a transfer from makerAddress to takerAddress
const amount = new BigNumber(0);
const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
encodedAssetData,
makerAddress,
takerAddress,
amount,
);
return expectRevertReasonOrAlwaysFailingTransactionAsync(
web3Wrapper.sendTransactionAsync({
to: erc721Proxy.address,
data,
from: exchangeAddress,
}),
RevertReason.InvalidAmount,
);
});
it('should throw if transferring > 1 amount of a token', async () => {
// Construct ERC721 asset data
const encodedAssetData = assetProxyUtils.encodeERC721AssetData(erc721Token.address, erc721MakerTokenId);
// Verify pre-condition
const ownerMakerAsset = await erc721Token.ownerOf.callAsync(erc721MakerTokenId);
expect(ownerMakerAsset).to.be.bignumber.equal(makerAddress);
// Perform a transfer from makerAddress to takerAddress
const amount = new BigNumber(500);
const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
encodedAssetData,
makerAddress,
takerAddress,
amount,
);
return expectRevertReasonOrAlwaysFailingTransactionAsync(
web3Wrapper.sendTransactionAsync({
to: erc721Proxy.address,
data,
from: exchangeAddress,
}),
RevertReason.InvalidAmount,
);
});
it('should throw if allowances are too low', async () => {
// Construct ERC721 asset data
const encodedAssetData = assetProxyUtils.encodeERC721AssetData(erc721Token.address, erc721MakerTokenId);
// Remove transfer approval for makerAddress.
await web3Wrapper.awaitTransactionSuccessAsync(
await erc721Token.approve.sendTransactionAsync(constants.NULL_ADDRESS, erc721MakerTokenId, {
from: makerAddress,
}),
constants.AWAIT_TRANSACTION_MINED_MS,
);
// Perform a transfer; expect this to fail.
const amount = new BigNumber(1);
const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
encodedAssetData,
makerAddress,
takerAddress,
amount,
);
return expectRevertReasonOrAlwaysFailingTransactionAsync(
web3Wrapper.sendTransactionAsync({
to: erc721Proxy.address,
data,
from: exchangeAddress,
}),
RevertReason.TransferFailed,
);
});
it('should throw if requesting address is not authorized', async () => {
// Construct ERC721 asset data
const encodedAssetData = assetProxyUtils.encodeERC721AssetData(erc721Token.address, erc721MakerTokenId);
// Perform a transfer from makerAddress to takerAddress
const amount = new BigNumber(1);
const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
encodedAssetData,
makerAddress,
takerAddress,
amount,
);
return expectRevertReasonOrAlwaysFailingTransactionAsync(
web3Wrapper.sendTransactionAsync({
to: erc721Proxy.address,
data,
from: notAuthorized,
}),
RevertReason.SenderNotAuthorized,
);
});
});
it('should have an id of 0x08e937fa', async () => {
const proxyId = await erc721Proxy.getProxyId.callAsync();
const expectedProxyId = '0x08e937fa';
expect(proxyId).to.equal(expectedProxyId);
});
});
});
// tslint:enable:no-unnecessary-type-assertion
// tslint:disable:max-file-line-count