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import { ZeroEx } from '0x.js';
import { BlockchainLifecycle } from '@0xproject/dev-utils';
import { BigNumber } from '@0xproject/utils';
import * as chai from 'chai';
import * as Web3 from 'web3';
import { AssetProxyDispatcherContract } from '../../src/contract_wrappers/generated/asset_proxy_dispatcher';
import { DummyERC20TokenContract } from '../../src/contract_wrappers/generated/dummy_e_r_c20_token';
import { ERC20ProxyContract } from '../../src/contract_wrappers/generated/e_r_c20_proxy';
import { ERC721ProxyContract } from '../../src/contract_wrappers/generated/e_r_c721_proxy';
import { assetProxyUtils } from '../../src/utils/asset_proxy_utils';
import { constants } from '../../src/utils/constants';
import { ERC20Wrapper } from '../../src/utils/erc20_wrapper';
import { ERC721Wrapper } from '../../src/utils/erc721_wrapper';
import { AssetProxyId, ContractName } from '../../src/utils/types';
import { chaiSetup } from '../utils/chai_setup';
import { deployer } from '../utils/deployer';
import { provider, web3Wrapper } from '../utils/web3_wrapper';
chaiSetup.configure();
const expect = chai.expect;
const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
describe('AssetProxyDispatcher', () => {
let owner: string;
let notOwner: string;
let notAuthorized: string;
let exchangeAddress: string;
let makerAddress: string;
let takerAddress: string;
let zrxToken: DummyERC20TokenContract;
let erc20Proxy: ERC20ProxyContract;
let erc721Proxy: ERC721ProxyContract;
let assetProxyDispatcher: AssetProxyDispatcherContract;
let erc20Wrapper: ERC20Wrapper;
let erc721Wrapper: ERC721Wrapper;
before(async () => {
// Setup accounts & addresses
const accounts = await web3Wrapper.getAvailableAddressesAsync();
const usedAddresses = ([owner, notOwner, exchangeAddress, makerAddress, takerAddress] = accounts);
notAuthorized = notOwner;
erc20Wrapper = new ERC20Wrapper(deployer, provider, usedAddresses, owner);
erc721Wrapper = new ERC721Wrapper(deployer, provider, usedAddresses, owner);
[zrxToken] = await erc20Wrapper.deployDummyTokensAsync();
erc20Proxy = await erc20Wrapper.deployProxyAsync();
await erc20Wrapper.setBalancesAndAllowancesAsync();
erc721Proxy = await erc721Wrapper.deployProxyAsync();
const assetProxyDispatcherInstance = await deployer.deployAsync(ContractName.AssetProxyDispatcher);
assetProxyDispatcher = new AssetProxyDispatcherContract(
assetProxyDispatcherInstance.abi,
assetProxyDispatcherInstance.address,
provider,
);
await assetProxyDispatcher.addAuthorizedAddress.sendTransactionAsync(exchangeAddress, {
from: owner,
});
await erc20Proxy.addAuthorizedAddress.sendTransactionAsync(assetProxyDispatcher.address, {
from: owner,
});
await erc721Proxy.addAuthorizedAddress.sendTransactionAsync(assetProxyDispatcher.address, {
from: owner,
});
});
beforeEach(async () => {
await blockchainLifecycle.startAsync();
});
afterEach(async () => {
await blockchainLifecycle.revertAsync();
});
describe('registerAssetProxy', () => {
it('should record proxy upon registration', async () => {
const prevProxyAddress = ZeroEx.NULL_ADDRESS;
await assetProxyDispatcher.registerAssetProxy.sendTransactionAsync(
AssetProxyId.ERC20,
erc20Proxy.address,
prevProxyAddress,
{ from: owner },
);
const proxyAddress = await assetProxyDispatcher.getAssetProxy.callAsync(AssetProxyId.ERC20);
expect(proxyAddress).to.be.equal(erc20Proxy.address);
});
it('should be able to record multiple proxies', async () => {
// Record first proxy
const prevERC20ProxyAddress = ZeroEx.NULL_ADDRESS;
await assetProxyDispatcher.registerAssetProxy.sendTransactionAsync(
AssetProxyId.ERC20,
erc20Proxy.address,
prevERC20ProxyAddress,
{ from: owner },
);
let proxyAddress = await assetProxyDispatcher.getAssetProxy.callAsync(AssetProxyId.ERC20);
expect(proxyAddress).to.be.equal(erc20Proxy.address);
// Record another proxy
const prevERC721ProxyAddress = ZeroEx.NULL_ADDRESS;
await assetProxyDispatcher.registerAssetProxy.sendTransactionAsync(
AssetProxyId.ERC721,
erc721Proxy.address,
prevERC721ProxyAddress,
{ from: owner },
);
proxyAddress = await assetProxyDispatcher.getAssetProxy.callAsync(AssetProxyId.ERC721);
expect(proxyAddress).to.be.equal(erc721Proxy.address);
});
it('should replace proxy address upon re-registration', async () => {
// Initial registration
const prevProxyAddress = ZeroEx.NULL_ADDRESS;
await assetProxyDispatcher.registerAssetProxy.sendTransactionAsync(
AssetProxyId.ERC20,
erc20Proxy.address,
prevProxyAddress,
{ from: owner },
);
let proxyAddress = await assetProxyDispatcher.getAssetProxy.callAsync(AssetProxyId.ERC20);
expect(proxyAddress).to.be.equal(erc20Proxy.address);
// Deploy a new version of the ERC20 Transfer Proxy contract
const newErc20TransferProxyInstance = await deployer.deployAsync(ContractName.ERC20Proxy);
const newErc20TransferProxy = new ERC20ProxyContract(
newErc20TransferProxyInstance.abi,
newErc20TransferProxyInstance.address,
provider,
);
// Register new ERC20 Transfer Proxy contract
const newAddress = newErc20TransferProxy.address;
const currentAddress = erc20Proxy.address;
await assetProxyDispatcher.registerAssetProxy.sendTransactionAsync(
AssetProxyId.ERC20,
newAddress,
currentAddress,
{ from: owner },
);
// Verify new asset proxy has replaced initial version
proxyAddress = await assetProxyDispatcher.getAssetProxy.callAsync(AssetProxyId.ERC20);
expect(proxyAddress).to.be.equal(newAddress);
});
it('should throw if registering with incorrect "currentAssetProxyAddress" field', async () => {
// Initial registration
const prevProxyAddress = ZeroEx.NULL_ADDRESS;
await assetProxyDispatcher.registerAssetProxy.sendTransactionAsync(
AssetProxyId.ERC20,
erc20Proxy.address,
prevProxyAddress,
{ from: owner },
);
const proxyAddress = await assetProxyDispatcher.getAssetProxy.callAsync(AssetProxyId.ERC20);
expect(proxyAddress).to.be.equal(erc20Proxy.address);
// The following transaction will throw because the currentAddress is no longer ZeroEx.NULL_ADDRESS
return expect(
assetProxyDispatcher.registerAssetProxy.sendTransactionAsync(
AssetProxyId.ERC20,
erc20Proxy.address,
ZeroEx.NULL_ADDRESS,
{ from: owner },
),
).to.be.rejectedWith(constants.REVERT);
});
it('should be able to reset proxy address to NULL', async () => {
// Initial registration
const prevProxyAddress = ZeroEx.NULL_ADDRESS;
await assetProxyDispatcher.registerAssetProxy.sendTransactionAsync(
AssetProxyId.ERC20,
erc20Proxy.address,
prevProxyAddress,
{ from: owner },
);
const proxyAddress = await assetProxyDispatcher.getAssetProxy.callAsync(AssetProxyId.ERC20);
expect(proxyAddress).to.be.equal(erc20Proxy.address);
// The following transaction will reset the proxy address
const newProxyAddress = ZeroEx.NULL_ADDRESS;
await assetProxyDispatcher.registerAssetProxy.sendTransactionAsync(
AssetProxyId.ERC20,
newProxyAddress,
erc20Proxy.address,
{ from: owner },
);
const finalProxyAddress = await assetProxyDispatcher.getAssetProxy.callAsync(AssetProxyId.ERC20);
expect(finalProxyAddress).to.be.equal(newProxyAddress);
});
it('should throw if requesting address is not owner', async () => {
const prevProxyAddress = ZeroEx.NULL_ADDRESS;
return expect(
assetProxyDispatcher.registerAssetProxy.sendTransactionAsync(
AssetProxyId.ERC20,
erc20Proxy.address,
prevProxyAddress,
{ from: notOwner },
),
).to.be.rejectedWith(constants.REVERT);
});
});
describe('getAssetProxy', () => {
it('should return correct address of registered proxy', async () => {
const prevProxyAddress = ZeroEx.NULL_ADDRESS;
await assetProxyDispatcher.registerAssetProxy.sendTransactionAsync(
AssetProxyId.ERC20,
erc20Proxy.address,
prevProxyAddress,
{ from: owner },
);
const proxyAddress = await assetProxyDispatcher.getAssetProxy.callAsync(AssetProxyId.ERC20);
expect(proxyAddress).to.be.equal(erc20Proxy.address);
});
it('should return NULL address if requesting non-existent proxy', async () => {
const proxyAddress = await assetProxyDispatcher.getAssetProxy.callAsync(AssetProxyId.ERC20);
expect(proxyAddress).to.be.equal(ZeroEx.NULL_ADDRESS);
});
});
describe('transferFrom', () => {
it('should dispatch transfer to registered proxy', async () => {
// Register ERC20 proxy
const prevProxyAddress = ZeroEx.NULL_ADDRESS;
await assetProxyDispatcher.registerAssetProxy.sendTransactionAsync(
AssetProxyId.ERC20,
erc20Proxy.address,
prevProxyAddress,
{ from: owner },
);
// Construct metadata for ERC20 proxy
const encodedProxyMetadata = assetProxyUtils.encodeERC20ProxyData(zrxToken.address);
// Perform a transfer from makerAddress to takerAddress
const erc20Balances = await erc20Wrapper.getBalancesAsync();
const amount = new BigNumber(10);
await assetProxyDispatcher.transferFrom.sendTransactionAsync(
encodedProxyMetadata,
makerAddress,
takerAddress,
amount,
{ from: exchangeAddress },
);
// 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 throw if dispatching to unregistered proxy', async () => {
// Construct metadata for ERC20 proxy
const encodedProxyMetadata = assetProxyUtils.encodeERC20ProxyData(zrxToken.address);
// Perform a transfer from makerAddress to takerAddress
const erc20Balances = await erc20Wrapper.getBalancesAsync();
const amount = new BigNumber(10);
return expect(
assetProxyDispatcher.transferFrom.sendTransactionAsync(
encodedProxyMetadata,
makerAddress,
takerAddress,
amount,
{ from: exchangeAddress },
),
).to.be.rejectedWith(constants.REVERT);
});
it('should throw on transfer if requesting address is not authorized', async () => {
// Register ERC20 proxy
const prevProxyAddress = ZeroEx.NULL_ADDRESS;
await assetProxyDispatcher.registerAssetProxy.sendTransactionAsync(
AssetProxyId.ERC20,
erc20Proxy.address,
prevProxyAddress,
{ from: owner },
);
// Construct metadata for ERC20 proxy
const encodedProxyMetadata = assetProxyUtils.encodeERC20ProxyData(zrxToken.address);
// Perform a transfer from makerAddress to takerAddress
const erc20Balances = await erc20Wrapper.getBalancesAsync();
const amount = new BigNumber(10);
return expect(
assetProxyDispatcher.transferFrom.sendTransactionAsync(
encodedProxyMetadata,
makerAddress,
takerAddress,
amount,
{ from: notAuthorized },
),
).to.be.rejectedWith(constants.REVERT);
});
});
});
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