Add version to new EtherToken, fix typos

packages/contracts/contracts/base/ERC20Token.sol

@@ -20,7 +20,8 @@ contract ERC20Token is Token {
     /// @param _value Amount to transfer.
     /// @return Success of transfer.
     function transferFrom(address _from, address _to, uint _value) returns (bool) {
-        require(balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value >= balances[_to]); 
+        uint allowance = allowed[_from][msg.sender];
+        require(balances[_from] >= _value && allowance >= _value && balances[_to] + _value >= balances[_to]); 
         balances[_to] += _value;
         balances[_from] -= _value;
         if (allowance < MAX_UINT) {

packages/contracts/contracts/deprecated/EtherToken.sol

@@ -18,7 +18,7 @@
 
 pragma solidity 0.4.11;
 
-import "./UnlimitedAllowanceToken.sol";
+import "./../tokens/UnlimitedAllowanceToken.sol";
 import "./../base/SafeMath.sol";
 
 contract EtherToken is UnlimitedAllowanceToken, SafeMath {

packages/contracts/contracts/tokens/EtherToken_v2.sol

@@ -18,10 +18,10 @@
 
 pragma solidity 0.4.11;
 
-import "./ERC20Token.sol";
+import "./../base/ERC20Token.sol";
 import "./../base/SafeMath.sol";
 
-contract EtherToken is ERC20Token, SafeMath {
+contract EtherToken_v2 is ERC20Token, SafeMath {
 
     string constant public name = "Ether Token";
     string constant public symbol = "WETH";
@@ -53,6 +53,6 @@ contract EtherToken is ERC20Token, SafeMath {
         balances[msg.sender] = safeSub(balances[msg.sender], amount);
         totalSupply = safeSub(totalSupply, amount);
         require(msg.sender.send(amount));
-        Tranfer(msg.sender, address(0), msg.value);
+        Transfer(msg.sender, address(0), amount);
     }
 }

packages/contracts/test/ts/ether_token_v2.ts

@@ -0,0 +1,118 @@
+import {ZeroEx, ZeroExError} from '0x.js';
+import {BigNumber} from 'bignumber.js';
+import * as chai from 'chai';
+import promisify = require('es6-promisify');
+import Web3 = require('web3');
+
+import {Artifacts} from '../../util/artifacts';
+
+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,
+                etherTokenContractAddress: etherTokenAddress,
+        });
+    });
+
+    const sendTransactionAsync = promisify(web3.eth.sendTransaction);
+    const getEthBalanceAsync = async (owner: string) => {
+        const balanceStr = await promisify(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(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(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(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(ethTokensToWithdraw, 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.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));
+        });
+    });
+});

packages/contracts/util/artifacts.ts

@@ -7,6 +7,7 @@ export class Artifacts {
     public ZRXToken: any;
     public DummyToken: any;
     public EtherToken: any;
+    public EtherToken_v2: any;
     public MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress: any;
     public MaliciousToken: any;
     constructor(artifacts: any) {
@@ -18,6 +19,7 @@ export class Artifacts {
         this.ZRXToken = artifacts.require('ZRXToken');
         this.DummyToken = artifacts.require('DummyToken');
         this.EtherToken = artifacts.require('EtherToken');
+        this.EtherToken_v2 = artifacts.require('EtherToken_v2');
         this.MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress = artifacts.require(
                 'MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress');
         this.MaliciousToken = artifacts.require('MaliciousToken');