123 lines
5.5 KiB
TypeScript
123 lines
5.5 KiB
TypeScript
import {ZeroEx, ZeroExError} from '0x.js';
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import {promisify} from '@0xproject/utils';
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import {BigNumber} from 'bignumber.js';
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import * as chai from 'chai';
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import Web3 = require('web3');
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import {Artifacts} from '../../util/artifacts';
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import {constants} from '../../util/constants';
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import {chaiSetup} from './utils/chai_setup';
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const {EtherToken} = new Artifacts(artifacts);
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chaiSetup.configure();
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const expect = chai.expect;
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// In order to benefit from type-safety, we re-assign the global web3 instance injected by Truffle
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// with type `any` to a variable of type `Web3`.
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const web3: Web3 = (global as any).web3;
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contract('EtherToken', (accounts: string[]) => {
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const account = accounts[0];
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const gasPrice = ZeroEx.toBaseUnitAmount(new BigNumber(20), 9);
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let zeroEx: ZeroEx;
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let etherTokenAddress: string;
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before(async () => {
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etherTokenAddress = EtherToken.address;
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zeroEx = new ZeroEx(web3.currentProvider, {
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gasPrice,
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networkId: constants.TESTRPC_NETWORK_ID,
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});
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});
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const sendTransactionAsync = promisify<string>(web3.eth.sendTransaction);
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const getEthBalanceAsync = async (owner: string) => {
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const balanceStr = await promisify<string>(web3.eth.getBalance)(owner);
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const balance = new BigNumber(balanceStr);
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return balance;
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};
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describe('deposit', () => {
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it('should throw if caller attempts to deposit more Ether than caller balance', async () => {
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const initEthBalance = await getEthBalanceAsync(account);
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const ethToDeposit = initEthBalance.plus(1);
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return expect(zeroEx.etherToken.depositAsync(etherTokenAddress, ethToDeposit, account))
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.to.be.rejectedWith(ZeroExError.InsufficientEthBalanceForDeposit);
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});
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it('should convert deposited Ether to wrapped Ether tokens', async () => {
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const initEthBalance = await getEthBalanceAsync(account);
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const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
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const ethToDeposit = new BigNumber(web3.toWei(1, 'ether'));
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const txHash = await zeroEx.etherToken.depositAsync(etherTokenAddress, ethToDeposit, account);
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const receipt = await zeroEx.awaitTransactionMinedAsync(txHash);
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const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
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const finalEthBalance = await getEthBalanceAsync(account);
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const finalEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
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expect(finalEthBalance).to.be.bignumber.equal(initEthBalance.minus(ethToDeposit.plus(ethSpentOnGas)));
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expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.plus(ethToDeposit));
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});
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});
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describe('withdraw', () => {
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it('should throw if caller attempts to withdraw greater than caller balance', async () => {
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const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
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const ethTokensToWithdraw = initEthTokenBalance.plus(1);
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return expect(zeroEx.etherToken.withdrawAsync(etherTokenAddress, ethTokensToWithdraw, account))
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.to.be.rejectedWith(ZeroExError.InsufficientWEthBalanceForWithdrawal);
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});
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it('should convert ether tokens to ether with sufficient balance', async () => {
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const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
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const initEthBalance = await getEthBalanceAsync(account);
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const ethTokensToWithdraw = initEthTokenBalance;
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expect(ethTokensToWithdraw).to.not.be.bignumber.equal(0);
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const txHash = await zeroEx.etherToken.withdrawAsync(etherTokenAddress, ethTokensToWithdraw, account, {
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gasLimit: constants.MAX_ETHERTOKEN_WITHDRAW_GAS,
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});
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const receipt = await zeroEx.awaitTransactionMinedAsync(txHash);
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const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
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const finalEthBalance = await getEthBalanceAsync(account);
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const finalEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
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expect(finalEthBalance).to.be.bignumber
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.equal(initEthBalance.plus(ethTokensToWithdraw.minus(ethSpentOnGas)));
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expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.minus(ethTokensToWithdraw));
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});
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});
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describe('fallback', () => {
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it('should convert sent ether to ether tokens', async () => {
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const initEthBalance = await getEthBalanceAsync(account);
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const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
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const ethToDeposit = ZeroEx.toBaseUnitAmount(new BigNumber(1), 18);
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const txHash = await sendTransactionAsync({
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from: account,
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to: etherTokenAddress,
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value: ethToDeposit,
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gasPrice,
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});
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const receipt = await zeroEx.awaitTransactionMinedAsync(txHash);
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const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
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const finalEthBalance = await getEthBalanceAsync(account);
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const finalEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
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expect(finalEthBalance).to.be.bignumber.equal(initEthBalance.minus(ethToDeposit.plus(ethSpentOnGas)));
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expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.plus(ethToDeposit));
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});
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});
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});
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