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import { ContractWrappers } from '@0xproject/contract-wrappers';
import { BlockchainLifecycle } from '@0xproject/dev-utils';
import { BigNumber } from '@0xproject/utils';
import * as chai from 'chai';
import 'mocha';
import { ERC20TokenApprovalEventArgs, ERC20TokenEvents, LogWithDecodedArgs, ZeroEx } from '../src';
import { chaiSetup } from './utils/chai_setup';
import { constants } from './utils/constants';
import { tokenUtils } from './utils/token_utils';
import { provider, web3Wrapper } from './utils/web3_wrapper';
const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
chaiSetup.configure();
const expect = chai.expect;
describe('ZeroEx library', () => {
let zeroEx: ZeroEx;
before(async () => {
const config = {
networkId: constants.TESTRPC_NETWORK_ID,
};
zeroEx = new ZeroEx(provider, config);
});
describe('#setProvider', () => {
it('overrides provider in nested web3s and invalidates contractInstances', async () => {
// Instantiate the contract instances with the current provider
await (zeroEx.exchange as any)._getExchangeContractAsync();
expect((zeroEx.exchange as any)._exchangeContractIfExists).to.not.be.undefined();
// Add property to newProvider so that we can differentiate it from old provider
(provider as any).zeroExTestId = 1;
zeroEx.setProvider(provider, constants.TESTRPC_NETWORK_ID);
// Check that contractInstances with old provider are removed after provider update
expect((zeroEx.exchange as any)._exchangeContractIfExists).to.be.undefined();
// Check that all nested zeroExContract/web3Wrapper instances return the updated provider
const nestedWeb3WrapperProvider = ((zeroEx as any)._contractWrappers as ContractWrappers).getProvider();
expect((nestedWeb3WrapperProvider as any).zeroExTestId).to.be.a('number');
const exchangeWeb3WrapperProvider = (zeroEx.exchange as any)._web3Wrapper.getProvider();
expect(exchangeWeb3WrapperProvider.zeroExTestId).to.be.a('number');
});
});
describe('#isValidSignature', () => {
const dataHex = '0x6927e990021d23b1eb7b8789f6a6feaf98fe104bb0cf8259421b79f9a34222b0';
const ethSignSignature =
'0x1B61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc3340349190569279751135161d22529dc25add4f6069af05be04cacbda2ace225403';
const address = '0x5409ed021d9299bf6814279a6a1411a7e866a631';
const bytes32Zeros = '0x0000000000000000000000000000000000000000000000000000000000000000';
it("should return false if the data doesn't pertain to the signature & address", async () => {
return expect(
(zeroEx.exchange as any).isValidSignatureAsync(bytes32Zeros, address, ethSignSignature),
).to.become(false);
});
it("should return false if the address doesn't pertain to the signature & data", async () => {
const validUnrelatedAddress = '0x8b0292b11a196601ed2ce54b665cafeca0347d42';
return expect(
(zeroEx.exchange as any).isValidSignatureAsync(dataHex, validUnrelatedAddress, ethSignSignature),
).to.become(false);
});
it("should return false if the signature doesn't pertain to the dataHex & address", async () => {
const signatureArray = ethSignSignature.split('');
// tslint:disable-next-line:custom-no-magic-numbers
signatureArray[5] = 'C'; // V = 28, instead of 27
const wrongSignature = signatureArray.join('');
return expect((zeroEx.exchange as any).isValidSignatureAsync(dataHex, address, wrongSignature)).to.become(
false,
);
});
it('should return true if the signature does pertain to the dataHex & address', async () => {
return expect((zeroEx.exchange as any).isValidSignatureAsync(dataHex, address, ethSignSignature)).to.become(
true,
);
});
});
describe('#toUnitAmount', () => {
it('should throw if invalid baseUnit amount supplied as argument', () => {
const invalidBaseUnitAmount = new BigNumber(1000000000.4);
const decimals = 6;
expect(() => ZeroEx.toUnitAmount(invalidBaseUnitAmount, decimals)).to.throw(
'amount should be in baseUnits (no decimals), found value: 1000000000.4',
);
});
it('Should return the expected unit amount for the decimals passed in', () => {
const baseUnitAmount = new BigNumber(1000000000);
const decimals = 6;
const unitAmount = ZeroEx.toUnitAmount(baseUnitAmount, decimals);
const expectedUnitAmount = new BigNumber(1000);
expect(unitAmount).to.be.bignumber.equal(expectedUnitAmount);
});
});
describe('#toBaseUnitAmount', () => {
it('Should return the expected base unit amount for the decimals passed in', () => {
const unitAmount = new BigNumber(1000);
const decimals = 6;
const baseUnitAmount = ZeroEx.toBaseUnitAmount(unitAmount, decimals);
const expectedUnitAmount = new BigNumber(1000000000);
expect(baseUnitAmount).to.be.bignumber.equal(expectedUnitAmount);
});
it('should throw if unitAmount has more decimals then specified as the max decimal precision', () => {
const unitAmount = new BigNumber(0.823091);
const decimals = 5;
expect(() => ZeroEx.toBaseUnitAmount(unitAmount, decimals)).to.throw(
'Invalid unit amount: 0.823091 - Too many decimal places',
);
});
});
describe('#awaitTransactionMinedAsync', () => {
beforeEach(async () => {
await blockchainLifecycle.startAsync();
});
afterEach(async () => {
await blockchainLifecycle.revertAsync();
});
it('returns transaction receipt with decoded logs', async () => {
const availableAddresses = await zeroEx.getAvailableAddressesAsync();
const coinbase = availableAddresses[0];
const zrxTokenAddress = tokenUtils.getProtocolTokenAddress();
const erc20ProxyAddress = zeroEx.erc20Proxy.getContractAddress();
const txHash = await zeroEx.erc20Token.setUnlimitedProxyAllowanceAsync(zrxTokenAddress, coinbase);
const txReceiptWithDecodedLogs = await zeroEx.awaitTransactionMinedAsync(txHash);
// tslint:disable-next-line:no-unnecessary-type-assertion
const log = txReceiptWithDecodedLogs.logs[0] as LogWithDecodedArgs<ERC20TokenApprovalEventArgs>;
expect(log.event).to.be.equal(ERC20TokenEvents.Approval);
expect(log.args._owner).to.be.equal(coinbase);
expect(log.args._spender).to.be.equal(erc20ProxyAddress);
expect(log.args._value).to.be.bignumber.equal(zeroEx.erc20Token.UNLIMITED_ALLOWANCE_IN_BASE_UNITS);
});
});
describe('#config', () => {
it('allows to specify exchange contract address', async () => {
const zeroExConfig = {
exchangeContractAddress: ZeroEx.NULL_ADDRESS,
networkId: constants.TESTRPC_NETWORK_ID,
};
const zeroExWithWrongExchangeAddress = new ZeroEx(provider, zeroExConfig);
expect(zeroExWithWrongExchangeAddress.exchange.getContractAddress()).to.be.equal(ZeroEx.NULL_ADDRESS);
});
it('allows to specify erc20Proxy contract address', async () => {
const zeroExConfig = {
erc20ProxyContractAddress: ZeroEx.NULL_ADDRESS,
networkId: constants.TESTRPC_NETWORK_ID,
};
const zeroExWithWrongERC20ProxyAddress = new ZeroEx(provider, zeroExConfig);
expect(zeroExWithWrongERC20ProxyAddress.erc20Proxy.getContractAddress()).to.be.equal(ZeroEx.NULL_ADDRESS);
});
});
});
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