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-rw-r--r--packages/contracts/test/ether_token.ts124
1 files changed, 124 insertions, 0 deletions
diff --git a/packages/contracts/test/ether_token.ts b/packages/contracts/test/ether_token.ts
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+++ b/packages/contracts/test/ether_token.ts
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+import { ZeroEx, ZeroExError } from '0x.js';
+import { BigNumber, promisify } from '@0xproject/utils';
+import * as chai from 'chai';
+import Web3 = require('web3');
+
+import { Artifacts } from '../util/artifacts';
+import { constants } from '../util/constants';
+
+import { chaiSetup } from './utils/chai_setup';
+
+const { EtherToken } = new Artifacts(artifacts);
+
+chaiSetup.configure();
+const expect = chai.expect;
+
+// In order to benefit from type-safety, we re-assign the global web3 instance injected by Truffle
+// with type `any` to a variable of type `Web3`.
+const web3: Web3 = (global as any).web3;
+
+contract('EtherToken', (accounts: string[]) => {
+ const account = accounts[0];
+ const gasPrice = ZeroEx.toBaseUnitAmount(new BigNumber(20), 9);
+ let zeroEx: ZeroEx;
+ let etherTokenAddress: string;
+
+ before(async () => {
+ etherTokenAddress = EtherToken.address;
+ zeroEx = new ZeroEx(web3.currentProvider, {
+ gasPrice,
+ networkId: constants.TESTRPC_NETWORK_ID,
+ });
+ });
+
+ const sendTransactionAsync = promisify<string>(web3.eth.sendTransaction);
+ const getEthBalanceAsync = async (owner: string) => {
+ const balanceStr = await promisify<string>(web3.eth.getBalance)(owner);
+ const balance = new BigNumber(balanceStr);
+ return balance;
+ };
+
+ describe('deposit', () => {
+ it('should throw if caller attempts to deposit more Ether than caller balance', async () => {
+ const initEthBalance = await getEthBalanceAsync(account);
+ const ethToDeposit = initEthBalance.plus(1);
+
+ return expect(zeroEx.etherToken.depositAsync(etherTokenAddress, ethToDeposit, account)).to.be.rejectedWith(
+ ZeroExError.InsufficientEthBalanceForDeposit,
+ );
+ });
+
+ it('should convert deposited Ether to wrapped Ether tokens', async () => {
+ const initEthBalance = await getEthBalanceAsync(account);
+ const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
+
+ const ethToDeposit = new BigNumber(web3.toWei(1, 'ether'));
+
+ const txHash = await zeroEx.etherToken.depositAsync(etherTokenAddress, ethToDeposit, account);
+ const receipt = await zeroEx.awaitTransactionMinedAsync(txHash);
+
+ const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
+ const finalEthBalance = await getEthBalanceAsync(account);
+ const finalEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
+
+ expect(finalEthBalance).to.be.bignumber.equal(initEthBalance.minus(ethToDeposit.plus(ethSpentOnGas)));
+ expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.plus(ethToDeposit));
+ });
+ });
+
+ describe('withdraw', () => {
+ it('should throw if caller attempts to withdraw greater than caller balance', async () => {
+ const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
+ const ethTokensToWithdraw = initEthTokenBalance.plus(1);
+
+ return expect(
+ zeroEx.etherToken.withdrawAsync(etherTokenAddress, ethTokensToWithdraw, account),
+ ).to.be.rejectedWith(ZeroExError.InsufficientWEthBalanceForWithdrawal);
+ });
+
+ it('should convert ether tokens to ether with sufficient balance', async () => {
+ const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
+ const initEthBalance = await getEthBalanceAsync(account);
+ const ethTokensToWithdraw = initEthTokenBalance;
+ expect(ethTokensToWithdraw).to.not.be.bignumber.equal(0);
+ const txHash = await zeroEx.etherToken.withdrawAsync(etherTokenAddress, ethTokensToWithdraw, account, {
+ gasLimit: constants.MAX_ETHERTOKEN_WITHDRAW_GAS,
+ });
+ const receipt = await zeroEx.awaitTransactionMinedAsync(txHash);
+
+ const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
+ const finalEthBalance = await getEthBalanceAsync(account);
+ const finalEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
+
+ expect(finalEthBalance).to.be.bignumber.equal(
+ initEthBalance.plus(ethTokensToWithdraw.minus(ethSpentOnGas)),
+ );
+ expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.minus(ethTokensToWithdraw));
+ });
+ });
+
+ describe('fallback', () => {
+ it('should convert sent ether to ether tokens', async () => {
+ const initEthBalance = await getEthBalanceAsync(account);
+ const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
+
+ const ethToDeposit = ZeroEx.toBaseUnitAmount(new BigNumber(1), 18);
+
+ const txHash = await sendTransactionAsync({
+ from: account,
+ to: etherTokenAddress,
+ value: ethToDeposit,
+ gasPrice,
+ });
+
+ const receipt = await zeroEx.awaitTransactionMinedAsync(txHash);
+
+ const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
+ const finalEthBalance = await getEthBalanceAsync(account);
+ const finalEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
+
+ expect(finalEthBalance).to.be.bignumber.equal(initEthBalance.minus(ethToDeposit.plus(ethSpentOnGas)));
+ expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.plus(ethToDeposit));
+ });
+ });
+});