Add contracts to packages, fix most linting errors

8 files changed, 927 insertions, 0 deletions

diff --git a/packages/contracts/deploy/test/deploy_test.ts b/packages/contracts/deploy/test/deploy_test.ts
new file mode 100644
index 000000000..28cbd4586
--- /dev/null
+++ b/packages/contracts/deploy/test/deploy_test.ts
@@ -0,0 +1,91 @@
+import * as chai from 'chai';
+import 'mocha';
+
+import {Compiler} from './../src/compiler';
+import {Deployer} from './../src/deployer';
+import {fsWrapper} from './../src/utils/fs_wrapper';
+import {CompilerOptions, ContractArtifact, ContractData, DeployerOptions, DoneCallback} from './../src/utils/types';
+import {constructor_args, exchange_binary} from './fixtures/exchange_bin';
+import {constants} from './util/constants';
+
+const expect = chai.expect;
+const artifactsDir = `${__dirname}/fixtures/artifacts`;
+const contractsDir = `${__dirname}/fixtures/contracts`;
+const exchangeArtifactPath = `${artifactsDir}/Exchange.json`;
+const compilerOpts: CompilerOptions = {
+    artifactsDir,
+    contractsDir,
+    networkId: constants.networkId,
+    optimizerEnabled: constants.optimizerEnabled,
+};
+const compiler = new Compiler(compilerOpts);
+const deployerOpts: DeployerOptions = {
+    artifactsDir,
+    networkId: constants.networkId,
+    jsonrpcPort: constants.jsonrpcPort,
+    defaults: {
+        gasPrice: constants.gasPrice,
+    },
+};
+const deployer = new Deployer(deployerOpts);
+
+/* tslint:disable */
+beforeEach(function(done: DoneCallback) {
+    this.timeout(constants.timeoutMs);
+    (async () => {
+        if (fsWrapper.doesPathExistSync(exchangeArtifactPath)) {
+            await fsWrapper.removeFileAsync(exchangeArtifactPath);
+        }
+        await compiler.compileAllAsync();
+        done();
+    })().catch(done);
+});
+/* tslint:enable */
+
+describe('#Compiler', () => {
+    it('should create an Exchange artifact with the correct unlinked binary', async () => {
+        const opts = {
+            encoding: 'utf8',
+        };
+        const exchangeArtifactString = await fsWrapper.readFileAsync(exchangeArtifactPath, opts);
+        const exchangeArtifact: ContractArtifact = JSON.parse(exchangeArtifactString);
+        const exchangeContractData: ContractData = exchangeArtifact.networks[constants.networkId];
+        // The last 43 bytes of the binaries are metadata which may not be equivalent
+        const unlinkedBinaryWithoutMetadata = exchangeContractData.unlinked_binary.slice(0, -86);
+        const exchangeBinaryWithoutMetadata = exchange_binary.slice(0, -86);
+        expect(unlinkedBinaryWithoutMetadata).to.equal(exchangeBinaryWithoutMetadata);
+    });
+});
+describe('#Deployer', () => {
+    describe('#deployAsync', () => {
+        it('should deploy the Exchange contract without updating the Exchange artifact', async () => {
+            const exchangeConstructorArgs = [constants.zrxTokenAddress, constants.tokenTransferProxyAddress];
+            const exchangeContractInstance = await deployer.deployAsync('Exchange', exchangeConstructorArgs);
+            const opts = {
+                encoding: 'utf8',
+            };
+            const exchangeArtifactString = await fsWrapper.readFileAsync(exchangeArtifactPath, opts);
+            const exchangeArtifact: ContractArtifact = JSON.parse(exchangeArtifactString);
+            const exchangeContractData: ContractData = exchangeArtifact.networks[constants.networkId];
+            const exchangeAddress = exchangeContractInstance.address;
+            expect(exchangeAddress).to.not.equal(undefined);
+            expect(exchangeContractData.address).to.equal(undefined);
+            expect(exchangeContractData.constructor_args).to.equal(undefined);
+        });
+    });
+    describe('#deployAndSaveAsync', () => {
+        it('should save the correct contract address and constructor arguments to the Exchange artifact', async () => {
+            const exchangeConstructorArgs = [constants.zrxTokenAddress, constants.tokenTransferProxyAddress];
+            const exchangeContractInstance = await deployer.deployAndSaveAsync('Exchange', exchangeConstructorArgs);
+            const opts = {
+                encoding: 'utf8',
+            };
+            const exchangeArtifactString = await fsWrapper.readFileAsync(exchangeArtifactPath, opts);
+            const exchangeArtifact: ContractArtifact = JSON.parse(exchangeArtifactString);
+            const exchangeContractData: ContractData = exchangeArtifact.networks[constants.networkId];
+            const exchangeAddress = exchangeContractInstance.address;
+            expect(exchangeAddress).to.be.equal(exchangeContractData.address);
+            expect(constructor_args).to.be.equal(exchangeContractData.constructor_args);
+        });
+    });
+});
diff --git a/packages/contracts/deploy/test/fixtures/contracts/Exchange.sol b/packages/contracts/deploy/test/fixtures/contracts/Exchange.sol
new file mode 100644
index 000000000..1b6819700
--- /dev/null
+++ b/packages/contracts/deploy/test/fixtures/contracts/Exchange.sol
@@ -0,0 +1,602 @@
+/*
+
+  Copyright 2017 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity 0.4.14;
+
+import "./TokenTransferProxy.sol";
+import "./base/Token.sol";
+import "./base/SafeMath.sol";
+
+/// @title Exchange - Facilitates exchange of ERC20 tokens.
+/// @author Amir Bandeali - <amir@0xProject.com>, Will Warren - <will@0xProject.com>
+contract Exchange is SafeMath {
+
+    // Error Codes
+    enum Errors {
+        ORDER_EXPIRED,                    // Order has already expired
+        ORDER_FULLY_FILLED_OR_CANCELLED,  // Order has already been fully filled or cancelled
+        ROUNDING_ERROR_TOO_LARGE,         // Rounding error too large
+        INSUFFICIENT_BALANCE_OR_ALLOWANCE // Insufficient balance or allowance for token transfer
+    }
+
+    string constant public VERSION = "1.0.0";
+    uint16 constant public EXTERNAL_QUERY_GAS_LIMIT = 4999;    // Changes to state require at least 5000 gas
+
+    address public ZRX_TOKEN_CONTRACT;
+    address public TOKEN_TRANSFER_PROXY_CONTRACT;
+
+    // Mappings of orderHash => amounts of takerTokenAmount filled or cancelled.
+    mapping (bytes32 => uint) public filled;
+    mapping (bytes32 => uint) public cancelled;
+
+    event LogFill(
+        address indexed maker,
+        address taker,
+        address indexed feeRecipient,
+        address makerToken,
+        address takerToken,
+        uint filledMakerTokenAmount,
+        uint filledTakerTokenAmount,
+        uint paidMakerFee,
+        uint paidTakerFee,
+        bytes32 indexed tokens, // keccak256(makerToken, takerToken), allows subscribing to a token pair
+        bytes32 orderHash
+    );
+
+    event LogCancel(
+        address indexed maker,
+        address indexed feeRecipient,
+        address makerToken,
+        address takerToken,
+        uint cancelledMakerTokenAmount,
+        uint cancelledTakerTokenAmount,
+        bytes32 indexed tokens,
+        bytes32 orderHash
+    );
+
+    event LogError(uint8 indexed errorId, bytes32 indexed orderHash);
+
+    struct Order {
+        address maker;
+        address taker;
+        address makerToken;
+        address takerToken;
+        address feeRecipient;
+        uint makerTokenAmount;
+        uint takerTokenAmount;
+        uint makerFee;
+        uint takerFee;
+        uint expirationTimestampInSec;
+        bytes32 orderHash;
+    }
+
+    function Exchange(address _zrxToken, address _tokenTransferProxy) {
+        ZRX_TOKEN_CONTRACT = _zrxToken;
+        TOKEN_TRANSFER_PROXY_CONTRACT = _tokenTransferProxy;
+    }
+
+    /*
+    * Core exchange functions
+    */
+
+    /// @dev Fills the input order.
+    /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient.
+    /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt.
+    /// @param fillTakerTokenAmount Desired amount of takerToken to fill.
+    /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfer will fail before attempting.
+    /// @param v ECDSA signature parameter v.
+    /// @param r ECDSA signature parameters r.
+    /// @param s ECDSA signature parameters s.
+    /// @return Total amount of takerToken filled in trade.
+    function fillOrder(
+          address[5] orderAddresses,
+          uint[6] orderValues,
+          uint fillTakerTokenAmount,
+          bool shouldThrowOnInsufficientBalanceOrAllowance,
+          uint8 v,
+          bytes32 r,
+          bytes32 s)
+          public
+          returns (uint filledTakerTokenAmount)
+    {
+        Order memory order = Order({
+            maker: orderAddresses[0],
+            taker: orderAddresses[1],
+            makerToken: orderAddresses[2],
+            takerToken: orderAddresses[3],
+            feeRecipient: orderAddresses[4],
+            makerTokenAmount: orderValues[0],
+            takerTokenAmount: orderValues[1],
+            makerFee: orderValues[2],
+            takerFee: orderValues[3],
+            expirationTimestampInSec: orderValues[4],
+            orderHash: getOrderHash(orderAddresses, orderValues)
+        });
+
+        require(order.taker == address(0) || order.taker == msg.sender);
+        require(order.makerTokenAmount > 0 && order.takerTokenAmount > 0 && fillTakerTokenAmount > 0);
+        require(isValidSignature(
+            order.maker,
+            order.orderHash,
+            v,
+            r,
+            s
+        ));
+
+        if (block.timestamp >= order.expirationTimestampInSec) {
+            LogError(uint8(Errors.ORDER_EXPIRED), order.orderHash);
+            return 0;
+        }
+
+        uint remainingTakerTokenAmount = safeSub(order.takerTokenAmount, getUnavailableTakerTokenAmount(order.orderHash));
+        filledTakerTokenAmount = min256(fillTakerTokenAmount, remainingTakerTokenAmount);
+        if (filledTakerTokenAmount == 0) {
+            LogError(uint8(Errors.ORDER_FULLY_FILLED_OR_CANCELLED), order.orderHash);
+            return 0;
+        }
+
+        if (isRoundingError(filledTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount)) {
+            LogError(uint8(Errors.ROUNDING_ERROR_TOO_LARGE), order.orderHash);
+            return 0;
+        }
+
+        if (!shouldThrowOnInsufficientBalanceOrAllowance && !isTransferable(order, filledTakerTokenAmount)) {
+            LogError(uint8(Errors.INSUFFICIENT_BALANCE_OR_ALLOWANCE), order.orderHash);
+            return 0;
+        }
+
+        uint filledMakerTokenAmount = getPartialAmount(filledTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount);
+        uint paidMakerFee;
+        uint paidTakerFee;
+        filled[order.orderHash] = safeAdd(filled[order.orderHash], filledTakerTokenAmount);
+        require(transferViaTokenTransferProxy(
+            order.makerToken,
+            order.maker,
+            msg.sender,
+            filledMakerTokenAmount
+        ));
+        require(transferViaTokenTransferProxy(
+            order.takerToken,
+            msg.sender,
+            order.maker,
+            filledTakerTokenAmount
+        ));
+        if (order.feeRecipient != address(0)) {
+            if (order.makerFee > 0) {
+                paidMakerFee = getPartialAmount(filledTakerTokenAmount, order.takerTokenAmount, order.makerFee);
+                require(transferViaTokenTransferProxy(
+                    ZRX_TOKEN_CONTRACT,
+                    order.maker,
+                    order.feeRecipient,
+                    paidMakerFee
+                ));
+            }
+            if (order.takerFee > 0) {
+                paidTakerFee = getPartialAmount(filledTakerTokenAmount, order.takerTokenAmount, order.takerFee);
+                require(transferViaTokenTransferProxy(
+                    ZRX_TOKEN_CONTRACT,
+                    msg.sender,
+                    order.feeRecipient,
+                    paidTakerFee
+                ));
+            }
+        }
+
+        LogFill(
+            order.maker,
+            msg.sender,
+            order.feeRecipient,
+            order.makerToken,
+            order.takerToken,
+            filledMakerTokenAmount,
+            filledTakerTokenAmount,
+            paidMakerFee,
+            paidTakerFee,
+            keccak256(order.makerToken, order.takerToken),
+            order.orderHash
+        );
+        return filledTakerTokenAmount;
+    }
+
+    /// @dev Cancels the input order.
+    /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient.
+    /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt.
+    /// @param cancelTakerTokenAmount Desired amount of takerToken to cancel in order.
+    /// @return Amount of takerToken cancelled.
+    function cancelOrder(
+        address[5] orderAddresses,
+        uint[6] orderValues,
+        uint cancelTakerTokenAmount)
+        public
+        returns (uint)
+    {
+        Order memory order = Order({
+            maker: orderAddresses[0],
+            taker: orderAddresses[1],
+            makerToken: orderAddresses[2],
+            takerToken: orderAddresses[3],
+            feeRecipient: orderAddresses[4],
+            makerTokenAmount: orderValues[0],
+            takerTokenAmount: orderValues[1],
+            makerFee: orderValues[2],
+            takerFee: orderValues[3],
+            expirationTimestampInSec: orderValues[4],
+            orderHash: getOrderHash(orderAddresses, orderValues)
+        });
+
+        require(order.maker == msg.sender);
+        require(order.makerTokenAmount > 0 && order.takerTokenAmount > 0 && cancelTakerTokenAmount > 0);
+
+        if (block.timestamp >= order.expirationTimestampInSec) {
+            LogError(uint8(Errors.ORDER_EXPIRED), order.orderHash);
+            return 0;
+        }
+
+        uint remainingTakerTokenAmount = safeSub(order.takerTokenAmount, getUnavailableTakerTokenAmount(order.orderHash));
+        uint cancelledTakerTokenAmount = min256(cancelTakerTokenAmount, remainingTakerTokenAmount);
+        if (cancelledTakerTokenAmount == 0) {
+            LogError(uint8(Errors.ORDER_FULLY_FILLED_OR_CANCELLED), order.orderHash);
+            return 0;
+        }
+
+        cancelled[order.orderHash] = safeAdd(cancelled[order.orderHash], cancelledTakerTokenAmount);
+
+        LogCancel(
+            order.maker,
+            order.feeRecipient,
+            order.makerToken,
+            order.takerToken,
+            getPartialAmount(cancelledTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount),
+            cancelledTakerTokenAmount,
+            keccak256(order.makerToken, order.takerToken),
+            order.orderHash
+        );
+        return cancelledTakerTokenAmount;
+    }
+
+    /*
+    * Wrapper functions
+    */
+
+    /// @dev Fills an order with specified parameters and ECDSA signature, throws if specified amount not filled entirely.
+    /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient.
+    /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt.
+    /// @param fillTakerTokenAmount Desired amount of takerToken to fill.
+    /// @param v ECDSA signature parameter v.
+    /// @param r ECDSA signature parameters r.
+    /// @param s ECDSA signature parameters s.
+    function fillOrKillOrder(
+        address[5] orderAddresses,
+        uint[6] orderValues,
+        uint fillTakerTokenAmount,
+        uint8 v,
+        bytes32 r,
+        bytes32 s)
+        public
+    {
+        require(fillOrder(
+            orderAddresses,
+            orderValues,
+            fillTakerTokenAmount,
+            false,
+            v,
+            r,
+            s
+        ) == fillTakerTokenAmount);
+    }
+
+    /// @dev Synchronously executes multiple fill orders in a single transaction.
+    /// @param orderAddresses Array of address arrays containing individual order addresses.
+    /// @param orderValues Array of uint arrays containing individual order values.
+    /// @param fillTakerTokenAmounts Array of desired amounts of takerToken to fill in orders.
+    /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfers will fail before attempting.
+    /// @param v Array ECDSA signature v parameters.
+    /// @param r Array of ECDSA signature r parameters.
+    /// @param s Array of ECDSA signature s parameters.
+    function batchFillOrders(
+        address[5][] orderAddresses,
+        uint[6][] orderValues,
+        uint[] fillTakerTokenAmounts,
+        bool shouldThrowOnInsufficientBalanceOrAllowance,
+        uint8[] v,
+        bytes32[] r,
+        bytes32[] s)
+        public
+    {
+        for (uint i = 0; i < orderAddresses.length; i++) {
+            fillOrder(
+                orderAddresses[i],
+                orderValues[i],
+                fillTakerTokenAmounts[i],
+                shouldThrowOnInsufficientBalanceOrAllowance,
+                v[i],
+                r[i],
+                s[i]
+            );
+        }
+    }
+
+    /// @dev Synchronously executes multiple fillOrKill orders in a single transaction.
+    /// @param orderAddresses Array of address arrays containing individual order addresses.
+    /// @param orderValues Array of uint arrays containing individual order values.
+    /// @param fillTakerTokenAmounts Array of desired amounts of takerToken to fill in orders.
+    /// @param v Array ECDSA signature v parameters.
+    /// @param r Array of ECDSA signature r parameters.
+    /// @param s Array of ECDSA signature s parameters.
+    function batchFillOrKillOrders(
+        address[5][] orderAddresses,
+        uint[6][] orderValues,
+        uint[] fillTakerTokenAmounts,
+        uint8[] v,
+        bytes32[] r,
+        bytes32[] s)
+        public
+    {
+        for (uint i = 0; i < orderAddresses.length; i++) {
+            fillOrKillOrder(
+                orderAddresses[i],
+                orderValues[i],
+                fillTakerTokenAmounts[i],
+                v[i],
+                r[i],
+                s[i]
+            );
+        }
+    }
+
+    /// @dev Synchronously executes multiple fill orders in a single transaction until total fillTakerTokenAmount filled.
+    /// @param orderAddresses Array of address arrays containing individual order addresses.
+    /// @param orderValues Array of uint arrays containing individual order values.
+    /// @param fillTakerTokenAmount Desired total amount of takerToken to fill in orders.
+    /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfers will fail before attempting.
+    /// @param v Array ECDSA signature v parameters.
+    /// @param r Array of ECDSA signature r parameters.
+    /// @param s Array of ECDSA signature s parameters.
+    /// @return Total amount of fillTakerTokenAmount filled in orders.
+    function fillOrdersUpTo(
+        address[5][] orderAddresses,
+        uint[6][] orderValues,
+        uint fillTakerTokenAmount,
+        bool shouldThrowOnInsufficientBalanceOrAllowance,
+        uint8[] v,
+        bytes32[] r,
+        bytes32[] s)
+        public
+        returns (uint)
+    {
+        uint filledTakerTokenAmount = 0;
+        for (uint i = 0; i < orderAddresses.length; i++) {
+            require(orderAddresses[i][3] == orderAddresses[0][3]); // takerToken must be the same for each order
+            filledTakerTokenAmount = safeAdd(filledTakerTokenAmount, fillOrder(
+                orderAddresses[i],
+                orderValues[i],
+                safeSub(fillTakerTokenAmount, filledTakerTokenAmount),
+                shouldThrowOnInsufficientBalanceOrAllowance,
+                v[i],
+                r[i],
+                s[i]
+            ));
+            if (filledTakerTokenAmount == fillTakerTokenAmount) break;
+        }
+        return filledTakerTokenAmount;
+    }
+
+    /// @dev Synchronously cancels multiple orders in a single transaction.
+    /// @param orderAddresses Array of address arrays containing individual order addresses.
+    /// @param orderValues Array of uint arrays containing individual order values.
+    /// @param cancelTakerTokenAmounts Array of desired amounts of takerToken to cancel in orders.
+    function batchCancelOrders(
+        address[5][] orderAddresses,
+        uint[6][] orderValues,
+        uint[] cancelTakerTokenAmounts)
+        public
+    {
+        for (uint i = 0; i < orderAddresses.length; i++) {
+            cancelOrder(
+                orderAddresses[i],
+                orderValues[i],
+                cancelTakerTokenAmounts[i]
+            );
+        }
+    }
+
+    /*
+    * Constant public functions
+    */
+
+    /// @dev Calculates Keccak-256 hash of order with specified parameters.
+    /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient.
+    /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt.
+    /// @return Keccak-256 hash of order.
+    function getOrderHash(address[5] orderAddresses, uint[6] orderValues)
+        public
+        constant
+        returns (bytes32)
+    {
+        return keccak256(
+            address(this),
+            orderAddresses[0], // maker
+            orderAddresses[1], // taker
+            orderAddresses[2], // makerToken
+            orderAddresses[3], // takerToken
+            orderAddresses[4], // feeRecipient
+            orderValues[0],    // makerTokenAmount
+            orderValues[1],    // takerTokenAmount
+            orderValues[2],    // makerFee
+            orderValues[3],    // takerFee
+            orderValues[4],    // expirationTimestampInSec
+            orderValues[5]     // salt
+        );
+    }
+
+    /// @dev Verifies that an order signature is valid.
+    /// @param signer address of signer.
+    /// @param hash Signed Keccak-256 hash.
+    /// @param v ECDSA signature parameter v.
+    /// @param r ECDSA signature parameters r.
+    /// @param s ECDSA signature parameters s.
+    /// @return Validity of order signature.
+    function isValidSignature(
+        address signer,
+        bytes32 hash,
+        uint8 v,
+        bytes32 r,
+        bytes32 s)
+        public
+        constant
+        returns (bool)
+    {
+        return signer == ecrecover(
+            keccak256("\x19Ethereum Signed Message:\n32", hash),
+            v,
+            r,
+            s
+        );
+    }
+
+    /// @dev Checks if rounding error > 0.1%.
+    /// @param numerator Numerator.
+    /// @param denominator Denominator.
+    /// @param target Value to multiply with numerator/denominator.
+    /// @return Rounding error is present.
+    function isRoundingError(uint numerator, uint denominator, uint target)
+        public
+        constant
+        returns (bool)
+    {
+        uint remainder = mulmod(target, numerator, denominator);
+        if (remainder == 0) return false; // No rounding error.
+
+        uint errPercentageTimes1000000 = safeDiv(
+            safeMul(remainder, 1000000),
+            safeMul(numerator, target)
+        );
+        return errPercentageTimes1000000 > 1000;
+    }
+
+    /// @dev Calculates partial value given a numerator and denominator.
+    /// @param numerator Numerator.
+    /// @param denominator Denominator.
+    /// @param target Value to calculate partial of.
+    /// @return Partial value of target.
+    function getPartialAmount(uint numerator, uint denominator, uint target)
+        public
+        constant
+        returns (uint)
+    {
+        return safeDiv(safeMul(numerator, target), denominator);
+    }
+
+    /// @dev Calculates the sum of values already filled and cancelled for a given order.
+    /// @param orderHash The Keccak-256 hash of the given order.
+    /// @return Sum of values already filled and cancelled.
+    function getUnavailableTakerTokenAmount(bytes32 orderHash)
+        public
+        constant
+        returns (uint)
+    {
+        return safeAdd(filled[orderHash], cancelled[orderHash]);
+    }
+
+
+    /*
+    * Internal functions
+    */
+
+    /// @dev Transfers a token using TokenTransferProxy transferFrom function.
+    /// @param token Address of token to transferFrom.
+    /// @param from Address transfering token.
+    /// @param to Address receiving token.
+    /// @param value Amount of token to transfer.
+    /// @return Success of token transfer.
+    function transferViaTokenTransferProxy(
+        address token,
+        address from,
+        address to,
+        uint value)
+        internal
+        returns (bool)
+    {
+        return TokenTransferProxy(TOKEN_TRANSFER_PROXY_CONTRACT).transferFrom(token, from, to, value);
+    }
+
+    /// @dev Checks if any order transfers will fail.
+    /// @param order Order struct of params that will be checked.
+    /// @param fillTakerTokenAmount Desired amount of takerToken to fill.
+    /// @return Predicted result of transfers.
+    function isTransferable(Order order, uint fillTakerTokenAmount)
+        internal
+        constant  // The called token contracts may attempt to change state, but will not be able to due to gas limits on getBalance and getAllowance.
+        returns (bool)
+    {
+        address taker = msg.sender;
+        uint fillMakerTokenAmount = getPartialAmount(fillTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount);
+
+        if (order.feeRecipient != address(0)) {
+            bool isMakerTokenZRX = order.makerToken == ZRX_TOKEN_CONTRACT;
+            bool isTakerTokenZRX = order.takerToken == ZRX_TOKEN_CONTRACT;
+            uint paidMakerFee = getPartialAmount(fillTakerTokenAmount, order.takerTokenAmount, order.makerFee);
+            uint paidTakerFee = getPartialAmount(fillTakerTokenAmount, order.takerTokenAmount, order.takerFee);
+            uint requiredMakerZRX = isMakerTokenZRX ? safeAdd(fillMakerTokenAmount, paidMakerFee) : paidMakerFee;
+            uint requiredTakerZRX = isTakerTokenZRX ? safeAdd(fillTakerTokenAmount, paidTakerFee) : paidTakerFee;
+
+            if (   getBalance(ZRX_TOKEN_CONTRACT, order.maker) < requiredMakerZRX
+                || getAllowance(ZRX_TOKEN_CONTRACT, order.maker) < requiredMakerZRX
+                || getBalance(ZRX_TOKEN_CONTRACT, taker) < requiredTakerZRX
+                || getAllowance(ZRX_TOKEN_CONTRACT, taker) < requiredTakerZRX
+            ) return false;
+
+            if (!isMakerTokenZRX && (   getBalance(order.makerToken, order.maker) < fillMakerTokenAmount // Don't double check makerToken if ZRX
+                                     || getAllowance(order.makerToken, order.maker) < fillMakerTokenAmount)
+            ) return false;
+            if (!isTakerTokenZRX && (   getBalance(order.takerToken, taker) < fillTakerTokenAmount // Don't double check takerToken if ZRX
+                                     || getAllowance(order.takerToken, taker) < fillTakerTokenAmount)
+            ) return false;
+        } else if (   getBalance(order.makerToken, order.maker) < fillMakerTokenAmount
+                   || getAllowance(order.makerToken, order.maker) < fillMakerTokenAmount
+                   || getBalance(order.takerToken, taker) < fillTakerTokenAmount
+                   || getAllowance(order.takerToken, taker) < fillTakerTokenAmount
+        ) return false;
+
+        return true;
+    }
+
+    /// @dev Get token balance of an address.
+    /// @param token Address of token.
+    /// @param owner Address of owner.
+    /// @return Token balance of owner.
+    function getBalance(address token, address owner)
+        internal
+        constant  // The called token contract may attempt to change state, but will not be able to due to an added gas limit.
+        returns (uint)
+    {
+        return Token(token).balanceOf.gas(EXTERNAL_QUERY_GAS_LIMIT)(owner); // Limit gas to prevent reentrancy
+    }
+
+    /// @dev Get allowance of token given to TokenTransferProxy by an address.
+    /// @param token Address of token.
+    /// @param owner Address of owner.
+    /// @return Allowance of token given to TokenTransferProxy by owner.
+    function getAllowance(address token, address owner)
+        internal
+        constant  // The called token contract may attempt to change state, but will not be able to due to an added gas limit.
+        returns (uint)
+    {
+        return Token(token).allowance.gas(EXTERNAL_QUERY_GAS_LIMIT)(owner, TOKEN_TRANSFER_PROXY_CONTRACT); // Limit gas to prevent reentrancy
+    }
+}
diff --git a/packages/contracts/deploy/test/fixtures/contracts/TokenTransferProxy.sol b/packages/contracts/deploy/test/fixtures/contracts/TokenTransferProxy.sol
new file mode 100644
index 000000000..90c8e7d66
--- /dev/null
+++ b/packages/contracts/deploy/test/fixtures/contracts/TokenTransferProxy.sol
@@ -0,0 +1,115 @@
+/*
+
+  Copyright 2017 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity 0.4.14;
+
+import "./base/Token.sol";
+import "./base/Ownable.sol";
+
+/// @title TokenTransferProxy - Transfers tokens on behalf of contracts that have been approved via decentralized governance.
+/// @author Amir Bandeali - <amir@0xProject.com>, Will Warren - <will@0xProject.com>
+contract TokenTransferProxy is Ownable {
+
+    /// @dev Only authorized addresses can invoke functions with this modifier.
+    modifier onlyAuthorized {
+        require(authorized[msg.sender]);
+        _;
+    }
+
+    modifier targetAuthorized(address target) {
+        require(authorized[target]);
+        _;
+    }
+
+    modifier targetNotAuthorized(address target) {
+        require(!authorized[target]);
+        _;
+    }
+
+    mapping (address => bool) public authorized;
+    address[] public authorities;
+
+    event LogAuthorizedAddressAdded(address indexed target, address indexed caller);
+    event LogAuthorizedAddressRemoved(address indexed target, address indexed caller);
+
+    /*
+     * Public functions
+     */
+
+    /// @dev Authorizes an address.
+    /// @param target Address to authorize.
+    function addAuthorizedAddress(address target)
+        public
+        onlyOwner
+        targetNotAuthorized(target)
+    {
+        authorized[target] = true;
+        authorities.push(target);
+        LogAuthorizedAddressAdded(target, msg.sender);
+    }
+
+    /// @dev Removes authorizion of an address.
+    /// @param target Address to remove authorization from.
+    function removeAuthorizedAddress(address target)
+        public
+        onlyOwner
+        targetAuthorized(target)
+    {
+        delete authorized[target];
+        for (uint i = 0; i < authorities.length; i++) {
+            if (authorities[i] == target) {
+                authorities[i] = authorities[authorities.length - 1];
+                authorities.length -= 1;
+                break;
+            }
+        }
+        LogAuthorizedAddressRemoved(target, msg.sender);
+    }
+
+    /// @dev Calls into ERC20 Token contract, invoking transferFrom.
+    /// @param token Address of token to transfer.
+    /// @param from Address to transfer token from.
+    /// @param to Address to transfer token to.
+    /// @param value Amount of token to transfer.
+    /// @return Success of transfer.
+    function transferFrom(
+        address token,
+        address from,
+        address to,
+        uint value)
+        public
+        onlyAuthorized
+        returns (bool)
+    {
+        return Token(token).transferFrom(from, to, value);
+    }
+
+    /*
+     * Public constant functions
+     */
+
+    /// @dev Gets all authorized addresses.
+    /// @return Array of authorized addresses.
+    function getAuthorizedAddresses()
+        public
+        constant
+        returns (address[])
+    {
+        return authorities;
+    }
+}
diff --git a/packages/contracts/deploy/test/fixtures/contracts/base/Ownable.sol b/packages/contracts/deploy/test/fixtures/contracts/base/Ownable.sol
new file mode 100644
index 000000000..2a74c3717
--- /dev/null
+++ b/packages/contracts/deploy/test/fixtures/contracts/base/Ownable.sol
@@ -0,0 +1,27 @@
+pragma solidity 0.4.14;
+
+/*
+ * Ownable
+ *
+ * Base contract with an owner.
+ * Provides onlyOwner modifier, which prevents function from running if it is called by anyone other than the owner.
+ */
+
+contract Ownable {
+    address public owner;
+
+    function Ownable() {
+        owner = msg.sender;
+    }
+
+    modifier onlyOwner() {
+        require(msg.sender == owner);
+        _;
+    }
+
+    function transferOwnership(address newOwner) onlyOwner {
+        if (newOwner != address(0)) {
+            owner = newOwner;
+        }
+    }
+}
diff --git a/packages/contracts/deploy/test/fixtures/contracts/base/SafeMath.sol b/packages/contracts/deploy/test/fixtures/contracts/base/SafeMath.sol
new file mode 100644
index 000000000..7414684a8
--- /dev/null
+++ b/packages/contracts/deploy/test/fixtures/contracts/base/SafeMath.sol
@@ -0,0 +1,41 @@
+pragma solidity 0.4.14;
+
+contract SafeMath {
+    function safeMul(uint a, uint b) internal constant returns (uint256) {
+        uint c = a * b;
+        assert(a == 0 || c / a == b);
+        return c;
+    }
+
+    function safeDiv(uint a, uint b) internal constant returns (uint256) {
+        uint c = a / b;
+        return c;
+    }
+
+    function safeSub(uint a, uint b) internal constant returns (uint256) {
+        assert(b <= a);
+        return a - b;
+    }
+
+    function safeAdd(uint a, uint b) internal constant returns (uint256) {
+        uint c = a + b;
+        assert(c >= a);
+        return c;
+    }
+
+    function max64(uint64 a, uint64 b) internal constant returns (uint64) {
+        return a >= b ? a : b;
+    }
+
+    function min64(uint64 a, uint64 b) internal constant returns (uint64) {
+        return a < b ? a : b;
+    }
+
+    function max256(uint256 a, uint256 b) internal constant returns (uint256) {
+        return a >= b ? a : b;
+    }
+
+    function min256(uint256 a, uint256 b) internal constant returns (uint256) {
+        return a < b ? a : b;
+    }
+}
diff --git a/packages/contracts/deploy/test/fixtures/contracts/base/Token.sol b/packages/contracts/deploy/test/fixtures/contracts/base/Token.sol
new file mode 100644
index 000000000..c03f8c567
--- /dev/null
+++ b/packages/contracts/deploy/test/fixtures/contracts/base/Token.sol
@@ -0,0 +1,38 @@
+pragma solidity 0.4.14;
+
+contract Token {
+
+    /// @return total amount of tokens
+    function totalSupply() constant returns (uint supply) {}
+
+    /// @param _owner The address from which the balance will be retrieved
+    /// @return The balance
+    function balanceOf(address _owner) constant returns (uint balance) {}
+
+    /// @notice send `_value` token to `_to` from `msg.sender`
+    /// @param _to The address of the recipient
+    /// @param _value The amount of token to be transferred
+    /// @return Whether the transfer was successful or not
+    function transfer(address _to, uint _value) returns (bool success) {}
+
+    /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
+    /// @param _from The address of the sender
+    /// @param _to The address of the recipient
+    /// @param _value The amount of token to be transferred
+    /// @return Whether the transfer was successful or not
+    function transferFrom(address _from, address _to, uint _value) returns (bool success) {}
+
+    /// @notice `msg.sender` approves `_addr` to spend `_value` tokens
+    /// @param _spender The address of the account able to transfer the tokens
+    /// @param _value The amount of wei to be approved for transfer
+    /// @return Whether the approval was successful or not
+    function approve(address _spender, uint _value) returns (bool success) {}
+
+    /// @param _owner The address of the account owning tokens
+    /// @param _spender The address of the account able to transfer the tokens
+    /// @return Amount of remaining tokens allowed to spent
+    function allowance(address _owner, address _spender) constant returns (uint remaining) {}
+
+    event Transfer(address indexed _from, address indexed _to, uint _value);
+    event Approval(address indexed _owner, address indexed _spender, uint _value);
+}
diff --git a/packages/contracts/deploy/test/fixtures/exchange_bin.ts b/packages/contracts/deploy/test/fixtures/exchange_bin.ts
new file mode 100644
index 000000000..0ca87760e
--- /dev/null
+++ b/packages/contracts/deploy/test/fixtures/exchange_bin.ts
@@ -0,0 +1,4 @@
+// tslint:disable-next-line:max-line-length
+export const constructor_args = '0x000000000000000000000000e41d2489571d322189246dafa5ebde1f4699f4980000000000000000000000008da0d80f5007ef1e431dd2127178d224e32c2ef4';
+// tslint:disable-next-line:max-line-length
+export const exchange_binary = 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diff --git a/packages/contracts/deploy/test/util/constants.ts b/packages/contracts/deploy/test/util/constants.ts
new file mode 100644
index 000000000..226c5a205
--- /dev/null
+++ b/packages/contracts/deploy/test/util/constants.ts
@@ -0,0 +1,9 @@
+export const constants = {
+    networkId: 0,
+    jsonrpcPort: 8545,
+    optimizerEnabled: 0,
+    gasPrice: '20000000000',
+    timeoutMs: 12000,
+    zrxTokenAddress: '0xe41d2489571d322189246dafa5ebde1f4699f498',
+    tokenTransferProxyAddress: '0x8da0d80f5007ef1e431dd2127178d224e32c2ef4',
+};