import 'mocha'; import * as chai from 'chai'; import * as Web3 from 'web3'; import * as BigNumber from 'bignumber.js'; import promisify = require('es6-promisify'); import {web3Factory} from './utils/web3_factory'; import {ZeroEx} from '../src/0x.js'; import {ZeroExError, Token} from '../src/types'; import {BlockchainLifecycle} from './utils/blockchain_lifecycle'; const expect = chai.expect; const blockchainLifecycle = new BlockchainLifecycle(); describe('TokenWrapper', () => { let web3: Web3; let zeroEx: ZeroEx; let userAddresses: string[]; let tokens: Token[]; before(async () => { web3 = web3Factory.create(); zeroEx = new ZeroEx(web3); userAddresses = await promisify(web3.eth.getAccounts)(); tokens = await zeroEx.tokenRegistry.getTokensAsync(); }); beforeEach(async () => { await blockchainLifecycle.startAsync(); }); afterEach(async () => { await blockchainLifecycle.revertAsync(); }); describe('#transferAsync', () => { it('should successfully transfer tokens', async () => { const token = tokens[0]; const fromAddress = userAddresses[0]; const toAddress = userAddresses[1]; const preBalance = await zeroEx.token.getBalanceAsync(token.address, toAddress); expect(preBalance).to.be.bignumber.equal(0); await zeroEx.token.transferAsync(token.address, fromAddress, toAddress, new BigNumber(42)); const postBalance = await zeroEx.token.getBalanceAsync(token.address, toAddress); expect(postBalance).to.be.bignumber.equal(42); }); it('should throw a CONTRACT_DOES_NOT_EXIST error for a non-existent token contract', async () => { const nonExistentTokenAddress = '0x9dd402f14d67e001d8efbe6583e51bf9706aa065'; const aOwnerAddress = userAddresses[0]; expect(zeroEx.token.transferAsync( nonExistentTokenAddress, userAddresses[0], userAddresses[1], new BigNumber(42), )).to.be.rejectedWith(ZeroExError.CONTRACT_DOES_NOT_EXIST); }); }); describe('#getBalanceAsync', () => { it('should return the balance for an existing ERC20 token', async () => { const aToken = tokens[0]; const aOwnerAddress = userAddresses[0]; const balance = await zeroEx.token.getBalanceAsync(aToken.address, aOwnerAddress); const expectedBalance = new BigNumber('100000000000000000000000000'); expect(balance).to.be.bignumber.equal(expectedBalance); }); it('should throw a CONTRACT_DOES_NOT_EXIST error for a non-existent token contract', async () => { const nonExistentTokenAddress = '0x9dd402f14d67e001d8efbe6583e51bf9706aa065'; const aOwnerAddress = userAddresses[0]; expect(zeroEx.token.getBalanceAsync(nonExistentTokenAddress, aOwnerAddress)) .to.be.rejectedWith(ZeroExError.CONTRACT_DOES_NOT_EXIST); }); it('should return a balance of 0 for a non-existent owner address', async () => { const aToken = tokens[0]; const aNonExistentOwner = '0x198C6Ad858F213Fb31b6FE809E25040E6B964593'; const balance = await zeroEx.token.getBalanceAsync(aToken.address, aNonExistentOwner); const expectedBalance = new BigNumber('0'); expect(balance).to.be.bignumber.equal(expectedBalance); }); }); describe('#getProxyAllowanceAsync', () => { it('should get the proxy allowance', async () => { const aToken = tokens[0]; const aOwnerAddress = userAddresses[0]; const amountInUnits = new BigNumber('50'); const amountInBaseUnits = ZeroEx.toBaseUnitAmount(amountInUnits, aToken.decimals); await zeroEx.token.setProxyAllowanceAsync(aToken.address, aOwnerAddress, amountInBaseUnits); const allowance = await zeroEx.token.getProxyAllowanceAsync(aToken.address, aOwnerAddress); const expectedAllowance = amountInBaseUnits; expect(allowance).to.be.bignumber.equal(expectedAllowance); }); it('should return 0 if no allowance set yet', async () => { const aToken = tokens[0]; const aOwnerAddress = userAddresses[0]; const allowance = await zeroEx.token.getProxyAllowanceAsync(aToken.address, aOwnerAddress); const expectedAllowance = new BigNumber('0'); expect(allowance).to.be.bignumber.equal(expectedAllowance); }); }); describe('#setProxyAllowanceAsync', () => { it('should set the proxy allowance', async () => { const aToken = tokens[0]; const aOwnerAddress = userAddresses[0]; const allowanceBeforeSet = await zeroEx.token.getProxyAllowanceAsync(aToken.address, aOwnerAddress); const expectedAllowanceBeforeAllowanceSet = new BigNumber('0'); expect(allowanceBeforeSet).to.be.bignumber.equal(expectedAllowanceBeforeAllowanceSet); const amountInUnits = new BigNumber('50'); const amountInBaseUnits = ZeroEx.toBaseUnitAmount(amountInUnits, aToken.decimals); await zeroEx.token.setProxyAllowanceAsync(aToken.address, aOwnerAddress, amountInBaseUnits); const allowanceAfterSet = await zeroEx.token.getProxyAllowanceAsync(aToken.address, aOwnerAddress); const expectedAllowanceAfterAllowanceSet = amountInBaseUnits; expect(allowanceAfterSet).to.be.bignumber.equal(expectedAllowanceAfterAllowanceSet); }); }); });