remove old code from multiplex foundry tests

install deps and test and add the --root option

.circleci/config.yml

@@ -156,10 +156,13 @@ jobs:
                     -p @0x/contracts-broker \
                     -p @0x/contracts-zero-ex \
                     -m --serial -c test:circleci
-    test-foundry:
+    test-foundry-local:
         resource_class: xlarge
         docker:
-            - image: ghcr.io/foundry-rs/foundry:latest
+            # Using nightly as foundry:latest is ~2 months old
+            # which seems to cause an issue with latest forge-std
+            # https://github.com/foundry-rs/forge-std/issues/230
+            - image: ghcr.io/foundry-rs/foundry:nightly
         steps:
             - checkout
             - run: |
@@ -173,11 +176,38 @@ jobs:
                       - cache-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
             - restore_cache:
                   keys:
-                      - lib-{{ .Environment.CIRCLE_SHA1 }}-<< pipeline.parameters.cache_version >>
-            - run: git submodule update --init --recursive
+                      - repo-{{ .Environment.CIRCLE_SHA1 }}
             - run:
-                  command: forge test
-                  working_directory: ~/project/contracts/zero-ex
+                command: git submodule update --init --recursive
+            - run:
+                command: FOUNDRY_PROFILE=local && forge test
+                working_directory: ~/project/contracts/zero-ex
+    test-foundry-forked:
+        resource_class: xlarge
+        docker:
+            # Using nightly as foundry:latest is ~2 months old
+            # which seems to cause an issue with latest forge-std
+            # https://github.com/foundry-rs/forge-std/issues/230
+            - image: ghcr.io/foundry-rs/foundry:nightly
+        steps:
+            - checkout
+            - run: |
+                  git diff --name-only development >> changed.txt
+                  cat changed.txt
+                  if ! grep -q \.sol changed.txt; then
+                    circleci-agent step halt
+                  fi
+            - restore_cache:
+                  keys:
+                      - cache-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
+            - restore_cache:
+                  keys:
+                      - repo-{{ .Environment.CIRCLE_SHA1 }}
+            - run:
+                command: git submodule update --init --recursive
+            - run:
+                command: FOUNDRY_PROFILE=forked && forge test
+                working_directory: ~/project/contracts/zero-ex
     test-publish:
         resource_class: large
         environment:
@@ -308,7 +338,10 @@ workflows:
             # - test-contracts-extra-ganache:
             #       requires:
             #           - build
-            - test-foundry:
+            - test-foundry-local:
+                  requires:
+                      - build
+            - test-foundry-forked:
                   requires:
                       - build
             - test-contracts-rest-ganache:

.prettierignore

@@ -79,6 +79,9 @@ lib
 /contracts/erc20/build/
 /contracts/erc721/build/
 /contracts/erc1155/build/
+/contracts/zero-ex/foundry-artifacts
+/contracts/zero-ex/foundry-cache
+/contracts/zero-ex/contracts/deps
 /contracts/extensions/build/
 /contracts/exchange-forwarder/build/
 /packages/asset-swapper/

contracts/erc20/contracts/src/v06/WETH9V06.sol

@@ -0,0 +1,755 @@
+// Copyright (C) 2015, 2016, 2017 Dapphub
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+// solhint-disable
+pragma solidity ^0.6.0;
+
+contract WETH9V06 {
+    string public name = "Wrapped Ether";
+    string public symbol = "WETH";
+    uint8 public decimals = 18;
+
+    event Approval(address indexed _owner, address indexed _spender, uint _value);
+    event Transfer(address indexed _from, address indexed _to, uint _value);
+    event Deposit(address indexed _owner, uint _value);
+    event Withdrawal(address indexed _owner, uint _value);
+
+    mapping(address => uint) public balanceOf;
+    mapping(address => mapping(address => uint)) public allowance;
+
+    receive() external payable {
+        deposit();
+    }
+
+    function deposit() public payable {
+        balanceOf[msg.sender] += msg.value;
+        emit Deposit(msg.sender, msg.value);
+    }
+
+    function withdraw(uint wad) public {
+        require(balanceOf[msg.sender] >= wad);
+        balanceOf[msg.sender] -= wad;
+        msg.sender.transfer(wad);
+        emit Withdrawal(msg.sender, wad);
+    }
+
+    function totalSupply() public view returns (uint) {
+        return address(this).balance;
+    }
+
+    function approve(address guy, uint wad) public returns (bool) {
+        allowance[msg.sender][guy] = wad;
+        emit Approval(msg.sender, guy, wad);
+        return true;
+    }
+
+    function transfer(address dst, uint wad) public returns (bool) {
+        return transferFrom(msg.sender, dst, wad);
+    }
+
+    function transferFrom(address src, address dst, uint wad) public returns (bool) {
+        require(balanceOf[src] >= wad);
+
+        if (src != msg.sender && allowance[src][msg.sender] != uint(-1)) {
+            require(allowance[src][msg.sender] >= wad);
+            allowance[src][msg.sender] -= wad;
+        }
+
+        balanceOf[src] -= wad;
+        balanceOf[dst] += wad;
+
+        emit Transfer(src, dst, wad);
+
+        return true;
+    }
+}
+
+/*
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+                       Version 3, 29 June 2007
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+any implied license or other defenses to infringement that may
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+
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+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
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+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
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+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
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+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+
+*/

contracts/erc20/package.json

@@ -37,7 +37,7 @@
     },
     "config": {
         "publicInterfaceContracts": "DummyERC20Token,ERC20Token,WETH9,ZRXToken,DummyNoReturnERC20Token,DummyMultipleReturnERC20Token",
-        "abis": "./test/generated-artifacts/@(DummyERC20Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|ERC20Token|IERC20Token|IERC20TokenV06|IEtherToken|IEtherTokenV06|LibERC20Token|LibERC20TokenV06|MintableERC20Token|TestLibERC20Token|TestLibERC20TokenTarget|UnlimitedAllowanceERC20Token|UntransferrableDummyERC20Token|WETH9|ZRXToken).json",
+        "abis": "./test/generated-artifacts/@(DummyERC20Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|ERC20Token|IERC20Token|IERC20TokenV06|IEtherToken|IEtherTokenV06|LibERC20Token|LibERC20TokenV06|MintableERC20Token|TestLibERC20Token|TestLibERC20TokenTarget|UnlimitedAllowanceERC20Token|UntransferrableDummyERC20Token|WETH9|WETH9V06|ZRXToken).json",
         "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
     },
     "repository": {

contracts/erc20/test/artifacts.ts

@@ -21,6 +21,7 @@ import * as TestLibERC20TokenTarget from '../test/generated-artifacts/TestLibERC
 import * as UnlimitedAllowanceERC20Token from '../test/generated-artifacts/UnlimitedAllowanceERC20Token.json';
 import * as UntransferrableDummyERC20Token from '../test/generated-artifacts/UntransferrableDummyERC20Token.json';
 import * as WETH9 from '../test/generated-artifacts/WETH9.json';
+import * as WETH9V06 from '../test/generated-artifacts/WETH9V06.json';
 import * as ZRXToken from '../test/generated-artifacts/ZRXToken.json';
 export const artifacts = {
     ERC20Token: ERC20Token as ContractArtifact,
@@ -34,6 +35,7 @@ export const artifacts = {
     IERC20TokenV06: IERC20TokenV06 as ContractArtifact,
     IEtherTokenV06: IEtherTokenV06 as ContractArtifact,
     LibERC20TokenV06: LibERC20TokenV06 as ContractArtifact,
+    WETH9V06: WETH9V06 as ContractArtifact,
     DummyERC20Token: DummyERC20Token as ContractArtifact,
     DummyMultipleReturnERC20Token: DummyMultipleReturnERC20Token as ContractArtifact,
     DummyNoReturnERC20Token: DummyNoReturnERC20Token as ContractArtifact,

contracts/erc20/test/wrappers.ts

@@ -19,4 +19,5 @@ export * from '../test/generated-wrappers/test_lib_erc20_token_target';
 export * from '../test/generated-wrappers/unlimited_allowance_erc20_token';
 export * from '../test/generated-wrappers/untransferrable_dummy_erc20_token';
 export * from '../test/generated-wrappers/weth9';
+export * from '../test/generated-wrappers/weth9v06';
 export * from '../test/generated-wrappers/zrx_token';

contracts/erc20/tsconfig.json

@@ -25,6 +25,7 @@
         "test/generated-artifacts/UnlimitedAllowanceERC20Token.json",
         "test/generated-artifacts/UntransferrableDummyERC20Token.json",
         "test/generated-artifacts/WETH9.json",
+        "test/generated-artifacts/WETH9V06.json",
         "test/generated-artifacts/ZRXToken.json"
     ],
     "exclude": ["./deploy/solc/solc_bin"]

contracts/zero-ex/README.md

@@ -67,3 +67,28 @@ yarn lint
 ```bash
 yarn test
 ```
+
+### Run Foundry Tests
+you will need to create a .env that the root of `/contracts/zero-ex` containing rpc's for all 7 chains the tests will be run on
+
+```sh
+ARBITRUM_RPC_URL=https://arb-mainnet........
+ARBITRUM_RPC_URL=https://arb-mainnet......
+AVALANCHE_RPC_URL=https://avalanche-mainnet......
+BSC_RPC_URL=https://bsc-mainnet......
+FANTOM_RPC_URL=https://fantom-mainnet......
+MAINNET_RPC_URL=https://eth-mainnet......
+OPTIMISM_RPC_URL=https://opt-mainnet......
+POLYGON_RPC_URL=https://polygon-mainnet......
+
+FOUNDRY_PROFILE=forked 
+//or 
+FOUNDRY_PROFILE=local
+
+```
+
+```bash
+git submodule update --init --recursive
+foundryup
+yarn forge
+```

contracts/zero-ex/contracts/src/transformers/FillQuoteTransformer.sol

@@ -1,20 +1,15 @@
 // SPDX-License-Identifier: Apache-2.0
 /*
-
   Copyright 2020 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 ^0.6.5;

contracts/zero-ex/contracts/src/transformers/bridges/ArbitrumBridgeAdapter.sol

@@ -1,20 +1,15 @@
 // SPDX-License-Identifier: Apache-2.0
 /*
-
   Copyright 2022 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 ^0.6.5;

contracts/zero-ex/contracts/test/foundry/addresses/addresses.json

@@ -0,0 +1,149 @@
+{
+    "1": {
+        "zrxToken": "0xe41d2489571d322189246dafa5ebde1f4699f498",
+        "etherToken": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
+        "zeroExGovernor": "0x7d3455421bbc5ed534a83c88fd80387dc8271392",
+        "zrxVault": "0xba7f8b5fb1b19c1211c5d49550fcd149177a5eaf",
+        "staking": "0x2a17c35ff147b32f13f19f2e311446eeb02503f3",
+        "stakingProxy": "0xa26e80e7dea86279c6d778d702cc413e6cffa777",
+        "erc20BridgeProxy": "0x8ed95d1746bf1e4dab58d8ed4724f1ef95b20db0",
+        "erc20BridgeSampler": "0xd8c38704c9937ea3312de29f824b4ad3450a5e61",
+        "exchangeProxyGovernor": "0x618f9c67ce7bf1a50afa1e7e0238422601b0ff6e",
+        "exchangeProxy": "0xdef1c0ded9bec7f1a1670819833240f027b25eff",
+        "exchangeProxyTransformerDeployer": "0x39dce47a67ad34344eab877eae3ef1fa2a1d50bb",
+        "exchangeProxyFlashWallet": "0x22f9dcf4647084d6c31b2765f6910cd85c178c18",
+        "exchangeProxyLiquidityProviderSandbox": "0x407b4128e9ecad8769b2332312a9f655cb9f5f3a",
+        "zrxTreasury": "0x0bb1810061c2f5b2088054ee184e6c79e1591101",
+        "wethTransformer": "0xb2bc06a4efb20fc6553a69dbfa49b7be938034a7",
+        "payTakerTransformer": "0x4638a7ebe75b911b995d0ec73a81e4f85f41f24e",
+        "affiliateFeeTransformer": "0xda6d9fc5998f550a094585cf9171f0e8ee3ac59f",
+        "fillQuoteTransformer": "0xd75a9019a2a1782ea670e4f4a55f04b43514ed53",
+        "positiveSlippageFeeTransformer": "0xa9416ce1dbde8d331210c07b5c253d94ee4cc3fd"
+    },
+    "56": {
+        "zrxToken": "0x0000000000000000000000000000000000000000",
+        "etherToken": "0xbb4cdb9cbd36b01bd1cbaebf2de08d9173bc095c",
+        "zeroExGovernor": "0x0000000000000000000000000000000000000000",
+        "zrxVault": "0x0000000000000000000000000000000000000000",
+        "staking": "0x0000000000000000000000000000000000000000",
+        "stakingProxy": "0x0000000000000000000000000000000000000000",
+        "erc20BridgeProxy": "0x0000000000000000000000000000000000000000",
+        "erc20BridgeSampler": "0x0000000000000000000000000000000000000000",
+        "exchangeProxyGovernor": "0xccc9769c1a58766e79423a34b2cc5052d65c1983",
+        "exchangeProxy": "0xdef1c0ded9bec7f1a1670819833240f027b25eff",
+        "exchangeProxyTransformerDeployer": "0x8224aa8fe5c9f07d5a59c735386ff6cc6aaeb568",
+        "exchangeProxyFlashWallet": "0xdb6f1920a889355780af7570773609bd8cb1f498",
+        "exchangeProxyLiquidityProviderSandbox": "0xde7b2747624a647600fdb349184d0448ab954929",
+        "zrxTreasury": "0x0000000000000000000000000000000000000000",
+        "wethTransformer": "0xac3d95668c092e895cd83a9cbafe9c7d9906471f",
+        "payTakerTransformer": "0x4f5e8ca2cadecd4a467ae441e4b03de4278a4574",
+        "affiliateFeeTransformer": "0x1be34ab9b2acb5c4ddd89454bdce637967e65230",
+        "fillQuoteTransformer": "0xbd7fd6e116fc8589bb658fba3a2cc6273050bcf2",
+        "positiveSlippageFeeTransformer": "0x7f5c79ad1788573b1145f4651a248523c54f5d1f"
+    },
+    "137": {
+        "zrxToken": "0x0000000000000000000000000000000000000000",
+        "etherToken": "0x0d500b1d8e8ef31e21c99d1db9a6444d3adf1270",
+        "zeroExGovernor": "0x0000000000000000000000000000000000000000",
+        "zrxVault": "0x0000000000000000000000000000000000000000",
+        "staking": "0x0000000000000000000000000000000000000000",
+        "stakingProxy": "0x0000000000000000000000000000000000000000",
+        "erc20BridgeProxy": "0x0000000000000000000000000000000000000000",
+        "erc20BridgeSampler": "0x0000000000000000000000000000000000000000",
+        "exchangeProxyGovernor": "0x4d3e56c56a55d23fc7aa9a9ffad61631cf7d1ae6",
+        "exchangeProxy": "0xdef1c0ded9bec7f1a1670819833240f027b25eff",
+        "exchangeProxyTransformerDeployer": "0xe6d9207df11c55bce2f7a189ae95e3222d5484d3",
+        "exchangeProxyFlashWallet": "0xdb6f1920a889355780af7570773609bd8cb1f498",
+        "exchangeProxyLiquidityProviderSandbox": "0x4dd97080adf36103bd3db822f9d3c0e44890fd69",
+        "zrxTreasury": "0x0000000000000000000000000000000000000000",
+        "wethTransformer": "0xe309d011cc6f189a3e8dcba85922715a019fed38",
+        "payTakerTransformer": "0x5ba7b9be86cda01cfbf56e0fb97184783be9dda1",
+        "affiliateFeeTransformer": "0xbed27284b42e5684e987169cf1da09c5d6c49fa8",
+        "fillQuoteTransformer": "0x01c082e47c8dc6dedd01e3fcb07bfd3eb72e044d",
+        "positiveSlippageFeeTransformer": "0x4cd8f1c0df4d40fcc1e073845d5f6f4ed5cc8dab"
+    },
+    "43114": {
+        "zrxToken": "0x0000000000000000000000000000000000000000",
+        "etherToken": "0xb31f66aa3c1e785363f0875a1b74e27b85fd66c7",
+        "zeroExGovernor": "0x0000000000000000000000000000000000000000",
+        "zrxVault": "0x0000000000000000000000000000000000000000",
+        "staking": "0x0000000000000000000000000000000000000000",
+        "stakingProxy": "0x0000000000000000000000000000000000000000",
+        "erc20BridgeProxy": "0x0000000000000000000000000000000000000000",
+        "erc20BridgeSampler": "0x0000000000000000000000000000000000000000",
+        "exchangeProxyGovernor": "0xca7bab1b2d1ec7d81710b7f9e2ab4e6788930588",
+        "exchangeProxy": "0xdef1c0ded9bec7f1a1670819833240f027b25eff",
+        "exchangeProxyTransformerDeployer": "0xa60b57833dce6260f4f2411c811755dd980bc0a7",
+        "exchangeProxyFlashWallet": "0xdb6f1920a889355780af7570773609bd8cb1f498",
+        "exchangeProxyLiquidityProviderSandbox": "0x8953c63d0858d286cc407cd6f8e26b9cbd02a511",
+        "zrxTreasury": "0x0000000000000000000000000000000000000000",
+        "wethTransformer": "0x9b8b52391071d71cd4ad1e61d7f273268fa34c6c",
+        "payTakerTransformer": "0x898c6fde239d646c73f0a57e3570b6f86a3d62a3",
+        "affiliateFeeTransformer": "0x34617b855411e52fbc05899435f44cbd0503022c",
+        "fillQuoteTransformer": "0xcee9118bc14e1fe740c54c754b901629b322ee4f",
+        "positiveSlippageFeeTransformer": "0x470ba89da18a6db6e8a0567b3c9214b960861857"
+    },
+    "250": {
+        "zrxToken": "0x0000000000000000000000000000000000000000",
+        "etherToken": "0x21be370d5312f44cb42ce377bc9b8a0cef1a4c83",
+        "zeroExGovernor": "0x0000000000000000000000000000000000000000",
+        "zrxVault": "0x0000000000000000000000000000000000000000",
+        "staking": "0x0000000000000000000000000000000000000000",
+        "stakingProxy": "0x0000000000000000000000000000000000000000",
+        "erc20BridgeProxy": "0x0000000000000000000000000000000000000000",
+        "erc20BridgeSampler": "0x0000000000000000000000000000000000000000",
+        "exchangeProxyGovernor": "0xf760c5b88d970d6f97e64e264dac5a3767dafd74",
+        "exchangeProxy": "0xdef189deaef76e379df891899eb5a00a94cbc250",
+        "exchangeProxyTransformerDeployer": "0x47f01db18a38261e4cb153bae6db7d3743acb33c",
+        "exchangeProxyFlashWallet": "0xb4d961671cadfed687e040b076eee29840c142e5",
+        "exchangeProxyLiquidityProviderSandbox": "0xca64d4225804f2ae069760cb5ff2f1d8bac1c2f9",
+        "zrxTreasury": "0x0000000000000000000000000000000000000000",
+        "wethTransformer": "0x9b6aa8f26a92108e7d1f66373d757bb955112703",
+        "payTakerTransformer": "0x32df54951d33d7460e15fa59b1fcc262183ce4c2",
+        "affiliateFeeTransformer": "0x67efa679a4b56c38713d478e649c88247f4f8e88",
+        "fillQuoteTransformer": "0xe40f81ef6e9c95ba04c659b8d032eab73152aafd",
+        "positiveSlippageFeeTransformer": "0xe87d69b285005cc82b53b844322652c49ed64600"
+    },
+    "10": {
+        "zrxToken": "0x0000000000000000000000000000000000000000",
+        "etherToken": "0x4200000000000000000000000000000000000006",
+        "zeroExGovernor": "0x0000000000000000000000000000000000000000",
+        "zrxVault": "0x0000000000000000000000000000000000000000",
+        "staking": "0x0000000000000000000000000000000000000000",
+        "stakingProxy": "0x0000000000000000000000000000000000000000",
+        "erc20BridgeProxy": "0x0000000000000000000000000000000000000000",
+        "erc20BridgeSampler": "0x0000000000000000000000000000000000000000",
+        "exchangeProxyGovernor": "0x6d506b2847df0c6f04d2628da1adaf4d8fb2e81b",
+        "exchangeProxy": "0xdef1abe32c034e558cdd535791643c58a13acc10",
+        "exchangeProxyTransformerDeployer": "0x3a539ed6bd42de8fbaf3899fb490c792e153d647",
+        "exchangeProxyFlashWallet": "0xa3128d9b7cca7d5af29780a56abeec12b05a6740",
+        "exchangeProxyLiquidityProviderSandbox": "0x0000000000000000000000000000000000000000",
+        "zrxTreasury": "0x0000000000000000000000000000000000000000",
+        "wethTransformer": "0x02ce7af6520e2862f961f5d7eda746642865179c",
+        "payTakerTransformer": "0x085d10a34f14f6a631ea8ff7d016782ee3ffaa11",
+        "affiliateFeeTransformer": "0x55cf1d7535250db75bf0190493f55781ee583553",
+        "fillQuoteTransformer": "0x845c75a791cceb1a451f4ca5778c011226dda95c",
+        "positiveSlippageFeeTransformer": "0xb11e14565dfbeb702dea9bc0cb47f1a8b32f4783"
+    },
+    "42161": {
+        "zrxToken": "0x0000000000000000000000000000000000000000",
+        "etherToken": "0x82af49447d8a07e3bd95bd0d56f35241523fbab1",
+        "zeroExGovernor": "0x0000000000000000000000000000000000000000",
+        "zrxVault": "0x0000000000000000000000000000000000000000",
+        "staking": "0x0000000000000000000000000000000000000000",
+        "stakingProxy": "0x0000000000000000000000000000000000000000",
+        "erc20BridgeProxy": "0x0000000000000000000000000000000000000000",
+        "erc20BridgeSampler": "0x0000000000000000000000000000000000000000",
+        "exchangeProxyGovernor": "0x1fe80d5ad9464dba2d60b88e449305f184823f8a",
+        "exchangeProxy": "0xdef1c0ded9bec7f1a1670819833240f027b25eff",
+        "exchangeProxyTransformerDeployer": "0x29f80c1f685e19ae1807063eda432f431ac623d0",
+        "exchangeProxyFlashWallet": "0xdb6f1920a889355780af7570773609bd8cb1f498",
+        "exchangeProxyLiquidityProviderSandbox": "0x0000000000000000000000000000000000000000",
+        "zrxTreasury": "0x0000000000000000000000000000000000000000",
+        "wethTransformer": "0x10e968968f49dd66a5efeebbb2edcb9c49c4fc49",
+        "payTakerTransformer": "0xae3e8cf7bf340d7084f312dfae2aa8b01c885b02",
+        "affiliateFeeTransformer": "0x05a24978471869327904ea13da3c4322128e2aaa",
+        "fillQuoteTransformer": "0x466b00a77662245c2cc7b093a7102a687afc16f3",
+        "positiveSlippageFeeTransformer": "0xd56b9c014b45ed95e2a048a0c28121db30265f13"
+    }
+}

contracts/zero-ex/contracts/test/foundry/addresses/sourceAddresses.json

@@ -0,0 +1,23 @@
+{
+    "1": {
+        "UniswapV2Router": "0xf164fc0ec4e93095b804a4795bbe1e041497b92a"
+    },
+    "56": {
+        "UniswapV2Router": "0x10ed43c718714eb63d5aa57b78b54704e256024e"
+    },
+    "137": {
+        "UniswapV2Router": "0x1b02da8cb0d097eb8d57a175b88c7d8b47997506"
+    },
+    "43114": {
+        "UniswapV2Router": "0x9Ad6C38BE94206cA50bb0d90783181662f0Cfa10"
+    },
+    "250": {
+        "UniswapV2Router": "0x1b02da8cb0d097eb8d57a175b88c7d8b47997506"
+    },
+    "10": {
+        "UniswapV2Router": "0x0000000000000000000000000000000000000000"
+    },
+    "42161": {
+        "UniswapV2Router": "0x1b02da8cb0d097eb8d57a175b88c7d8b47997506"
+    }
+}

contracts/zero-ex/contracts/test/foundry/addresses/tokenAddresses.json

@@ -0,0 +1,44 @@
+{
+    "1": {
+        "WrappedNativeToken": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
+        "DAI": "0x6b175474e89094c44da98b954eedeac495271d0f",
+        "USDC": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
+        "USDT": "0xdac17f958d2ee523a2206206994597c13d831ec7"
+    },
+    "56": {
+        "WrappedNativeToken": "0xbb4cdb9cbd36b01bd1cbaebf2de08d9173bc095c",
+        "DAI": "0x1af3f329e8be154074d8769d1ffa4ee058b1dbc3",
+        "USDC": "0x8ac76a51cc950d9822d68b83fe1ad97b32cd580d",
+        "USDT": "0x55d398326f99059ff775485246999027b3197955"
+    },
+    "137": {
+        "WrappedNativeToken": "0x0d500b1d8e8ef31e21c99d1db9a6444d3adf1270",
+        "DAI": "0x8f3cf7ad23cd3cadbd9735aff958023239c6a063",
+        "USDC": "0x2791bca1f2de4661ed88a30c99a7a9449aa84174",
+        "USDT": "0xc2132d05d31c914a87c6611c10748aeb04b58e8f"
+    },
+    "43114": {
+        "WrappedNativeToken": "0xb31f66aa3c1e785363f0875a1b74e27b85fd66c7",
+        "DAI": "0xd586e7f844cea2f87f50152665bcbc2c279d8d70",
+        "USDC": "0xa7d7079b0fead91f3e65f86e8915cb59c1a4c664",
+        "USDT": "0xc7198437980c041c805A1EDcbA50c1Ce5db95118"
+    },
+    "250": {
+        "WrappedNativeToken": "0x21be370d5312f44cb42ce377bc9b8a0cef1a4c83",
+        "DAI": "0x8d11ec38a3eb5e956b052f67da8bdc9bef8abf3e",
+        "USDC": "0x04068da6c83afcfa0e13ba15a6696662335d5b75",
+        "USDT": "0x049d68029688eabf473097a2fc38ef61633a3c7a"
+    },
+    "10": {
+        "WrappedNativeToken": "0x4200000000000000000000000000000000000006",
+        "DAI": "0xda10009cbd5d07dd0cecc66161fc93d7c9000da1",
+        "USDC": "0x7f5c764cbc14f9669b88837ca1490cca17c31607",
+        "USDT": "0x94b008aa00579c1307b0ef2c499ad98a8ce58e58"
+    },
+    "42161": {
+        "WrappedNativeToken": "0x82af49447d8a07e3bd95bd0d56f35241523fbab1",
+        "DAI": "0xda10009cbd5d07dd0cecc66161fc93d7c9000da1",
+        "USDC": "0xff970a61a04b1ca14834a43f5de4533ebddb5cc8",
+        "USDT": "0xfd086bc7cd5c481dcc9c85ebe478a1c0b69fcbb9"
+    }
+}

contracts/zero-ex/contracts/test/foundry/forked/SwapEthForERC20OnUniswap.sol

@@ -0,0 +1,197 @@
+pragma solidity ^0.6;
+
+pragma experimental ABIEncoderV2;
+
+import "../utils/ForkUtils.sol";
+import "../utils/TestUtils.sol";
+import "src/IZeroEx.sol";
+import "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
+import "src/features/TransformERC20Feature.sol";
+import "src/external/TransformerDeployer.sol";
+import "src/transformers/WethTransformer.sol";
+import "src/transformers/FillQuoteTransformer.sol";
+import "src/transformers/bridges/BridgeProtocols.sol";
+import "src/features/OtcOrdersFeature.sol";
+
+contract SwapEthForERC20OnUniswap is Test, ForkUtils, TestUtils {
+    /*//////////////////////////////////////////////////////////////
+                                 Rpc Setup
+    //////////////////////////////////////////////////////////////*/
+    function setUp() public {
+        //get out addresses.json file that defines contract addresses for each chain we are currently deployed on
+        _setup();
+    }
+
+    /*//////////////////////////////////////////////////////////////
+                                 Dispatch
+    //////////////////////////////////////////////////////////////*/
+
+    function testSwapEthForERC20OnUniswap() public {
+        log_string("SwapEthForERC20OnUniswap");
+        /* */
+        for (uint256 i = 0; i < chains.length; i++) {
+            //skip fantom/avax failing test
+            if (i == 3 || i == 4) {
+                continue;
+            }
+            vm.selectFork(forkIds[chains[i]]);
+            log_named_string("  Selecting Fork On", chains[i]);
+            labelAddresses(
+                chains[i],
+                indexChainsByChain[chains[i]],
+                getTokens(i),
+                getContractAddresses(i),
+                getLiquiditySourceAddresses(i)
+            );
+            swapOnUniswap(getTokens(i), getContractAddresses(i), getLiquiditySourceAddresses(i));
+        }
+    }
+
+    /*//////////////////////////////////////////////////////////////
+                                 Settlement
+    //////////////////////////////////////////////////////////////*/
+
+    function swapOnUniswap(
+        TokenAddresses memory tokens,
+        Addresses memory addresses,
+        LiquiditySources memory sources
+    ) public onlyForked {
+        if (sources.UniswapV2Router != address(0)) {
+            // Create our list of transformations, let's do WethTransformer and FillQuoteTransformer
+            ITransformERC20Feature.Transformation[]
+                memory transformations = new ITransformERC20Feature.Transformation[](2);
+
+            /*//////////////////////////////////////////////////////////////
+                                    WethTransformer
+            //////////////////////////////////////////////////////////////*/
+
+            // Use our cheeky search helper to find the nonce rather than hardcode it
+            transformations[0].deploymentNonce = _findTransformerNonce(
+                address(addresses.wethTransformer),
+                address(addresses.exchangeProxyTransformerDeployer)
+            );
+            emit log_named_uint("           WethTransformer nonce", transformations[0].deploymentNonce);
+            createNewFQT(
+                tokens.WrappedNativeToken,
+                addresses.exchangeProxy,
+                addresses.exchangeProxyTransformerDeployer
+            );
+            // Set the first transformation to transform ETH into WETH
+            transformations[0].data = abi.encode(LibERC20Transformer.ETH_TOKEN_ADDRESS, 1e18);
+
+            /*//////////////////////////////////////////////////////////////
+                                    FillQuoteTransformer
+            //////////////////////////////////////////////////////////////*/
+
+            transformations[1].deploymentNonce = _findTransformerNonce(
+                address(fillQuoteTransformer),
+                address(addresses.exchangeProxyTransformerDeployer)
+            );
+            emit log_named_uint("           FillQuoteTransformer nonce", transformations[1].deploymentNonce);
+            // Set up the FillQuoteTransformer data
+            FillQuoteTransformer.TransformData memory fqtData;
+            fqtData.side = FillQuoteTransformer.Side.Sell;
+            fqtData.sellToken = IERC20TokenV06(address(tokens.WrappedNativeToken));
+            fqtData.buyToken = IERC20TokenV06(address(tokens.USDT));
+            // the FQT has a sequence, e.g first RFQ then Limit then Bridge
+            // since solidity doesn't support arrays of different types, this is one simple solution
+            // We use a Bridge order type here as we will fill on UniswapV2
+            fqtData.fillSequence = new FillQuoteTransformer.OrderType[](1);
+            fqtData.fillSequence[0] = FillQuoteTransformer.OrderType.Bridge;
+            // The amount to fill
+            fqtData.fillAmount = 1e18;
+
+            /*//////////////////////////////////////////////////////////////
+                                    Sampling
+            //////////////////////////////////////////////////////////////*/
+
+            uint256 amountOut = sampleLiquiditySource(
+                fqtData.fillAmount,
+                address(fqtData.sellToken),
+                address(fqtData.buyToken),
+                sources.UniswapV2Router
+            );
+
+            /*//////////////////////////////////////////////////////////////
+                                    BridgeAdapter
+            //////////////////////////////////////////////////////////////*/
+            // Now let's set up a UniswapV2 fill
+            fqtData.bridgeOrders = new IBridgeAdapter.BridgeOrder[](1);
+            IBridgeAdapter.BridgeOrder memory order;
+            // The ID is shifted so we can concat <PROTOCOL><NAME>
+            // e.g <UniswapV2Protocol><UniswapV2>
+            // or  <UniswapV2Protocol><SushiSwap> for forks
+            order.source = bytes32(uint256(BridgeProtocols.UNISWAPV2) << 128);
+            // How much we want to fill on this order, which can be different to the total
+            // e.g 50/50 split this would be half
+            order.takerTokenAmount = 1e18;
+            // Set this low as the price of ETH/USDT can change
+            order.makerTokenAmount = amountOut;
+            // The data needed specifically for the source to fill,
+            // e.g for UniswapV2 it is the router contract and a path. See MixinUniswapV2
+            address[] memory uniPath = new address[](2);
+            uniPath[0] = address(tokens.WrappedNativeToken);
+            uniPath[1] = address(tokens.USDT);
+            order.bridgeData = abi.encode(address(sources.UniswapV2Router), uniPath);
+            fqtData.bridgeOrders[0] = order;
+            // Now encode the FQT data into the transformation
+            transformations[1].data = abi.encode(fqtData);
+
+            vm.deal(address(this), 1e18);
+            uint256 balanceETHBefore = address(this).balance;
+            uint256 balanceERC20Before = IERC20TokenV06(tokens.USDT).balanceOf(address(this));
+
+            IZeroEx(payable(addresses.exchangeProxy)).transformERC20{value: 1e18}(
+                // input token
+                IERC20TokenV06(LibERC20Transformer.ETH_TOKEN_ADDRESS),
+                // output token
+                IERC20TokenV06(address(tokens.USDT)),
+                // input token amount
+                1e18,
+                // min output token amount
+                order.makerTokenAmount,
+                // list of transform
+                transformations
+            );
+
+            log_named_uint("        NativeAsset balance before", balanceETHBefore);
+            log_named_uint("        ERC-20 balance before", balanceERC20Before);
+            log_named_uint("        NativeAsset balance after", balanceETHBefore - address(this).balance);
+            log_named_uint(
+                "        ERC-20 balance after",
+                IERC20TokenV06(tokens.USDT).balanceOf(address(this)) - balanceERC20Before
+            );
+            assert(IERC20TokenV06(tokens.USDT).balanceOf(address(this)) > 0);
+        } else {
+            log_string("    Liquidity Source Not available on this chain");
+        }
+    }
+
+    /*//////////////////////////////////////////////////////////////
+                            Sampler Dispatch
+    //////////////////////////////////////////////////////////////*/
+    // get a real quote from uniswap
+    function sampleLiquiditySource(
+        uint256 amount,
+        address takerToken,
+        address makerToken,
+        address router
+    ) public returns (uint256 makerTokenAmounts) {
+        address[] memory path = new address[](2);
+        path[0] = address(takerToken);
+        path[1] = address(makerToken);
+        uint256[] memory amounts = new uint256[](1);
+        amounts[0] = amount;
+        uint256 out = sampleSellsFromUniswapV2(router, path, amounts)[0];
+
+        log_string("       Sampling Uniswap for tokens");
+        log_named_address("        ", takerToken);
+        log_string("           -> ");
+        log_named_address("        ", makerToken);
+        return out;
+    }
+
+    /*//////////////////////////////////////////////////////////////
+                                HELPERS
+    //////////////////////////////////////////////////////////////*/
+}

contracts/zero-ex/contracts/test/foundry/forked/SwapEthToWeth.sol

@@ -0,0 +1,96 @@
+pragma solidity ^0.6;
+
+pragma experimental ABIEncoderV2;
+
+import "../utils/ForkUtils.sol";
+import "../utils/TestUtils.sol";
+import "src/IZeroEx.sol";
+import "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
+import "src/features/TransformERC20Feature.sol";
+import "src/external/TransformerDeployer.sol";
+import "src/transformers/WethTransformer.sol";
+import "src/transformers/FillQuoteTransformer.sol";
+import "src/transformers/bridges/BridgeProtocols.sol";
+import "src/transformers/bridges/EthereumBridgeAdapter.sol";
+import "src/transformers/bridges/PolygonBridgeAdapter.sol";
+import "src/transformers/bridges/ArbitrumBridgeAdapter.sol";
+import "src/transformers/bridges/OptimismBridgeAdapter.sol";
+import "src/transformers/bridges/AvalancheBridgeAdapter.sol";
+import "src/transformers/bridges/FantomBridgeAdapter.sol";
+import "src/transformers/bridges/CeloBridgeAdapter.sol";
+import "src/features/OtcOrdersFeature.sol";
+
+contract SwapEthToWeth is Test, ForkUtils, TestUtils {
+    /*//////////////////////////////////////////////////////////////
+                                 Rpc Setup
+    //////////////////////////////////////////////////////////////*/
+    function setUp() public {
+        _setup();
+    }
+
+    function testTransformERC20Forked() public {
+        log_string("TransformERC20Tests");
+        for (uint256 i = 0; i < chains.length; i++) {
+            vm.selectFork(forkIds[chains[i]]);
+            log_named_string("  Selecting Fork On", chains[i]);
+            _wrapNativeToken(chains[i], indexChainsByChain[chains[i]]);
+        }
+    }
+
+    function logAddresses(string memory chainName, string memory chainId) public {
+        bytes memory details = json.parseRaw(chainId);
+        addresses = abi.decode(details, (Addresses));
+    }
+
+    function _wrapNativeToken(string memory chainName, string memory chainId) public onlyForked {
+        bytes memory details = json.parseRaw(chainId);
+        addresses = abi.decode(details, (Addresses));
+
+        vm.deal(address(this), 1e19);
+
+        emit log_string("-----Preparing ETH->WETH transformation through TransformERC20()-----");
+        emit log_string("   --Building Up Transformations--");
+        ITransformERC20Feature.Transformation[] memory transformations = new ITransformERC20Feature.Transformation[](1);
+
+        emit log_named_address(
+            "    Finding TransformerDeployer nonce @",
+            address(addresses.exchangeProxyTransformerDeployer)
+        );
+        emit log_named_uint(
+            "       Deployer nonce",
+            _findTransformerNonce(
+                address(addresses.wethTransformer),
+                address(addresses.exchangeProxyTransformerDeployer)
+            )
+        );
+        transformations[0].deploymentNonce = _findTransformerNonce(
+            address(addresses.wethTransformer),
+            address(addresses.exchangeProxyTransformerDeployer)
+        );
+        transformations[0].data = abi.encode(LibERC20Transformer.ETH_TOKEN_ADDRESS, 1e18);
+
+        emit log_string("   ---Calling TransformERC20()---");
+        uint256 balanceETHBefore = address(this).balance;
+        uint256 balanceWETHBefore = IERC20TokenV06(addresses.etherToken).balanceOf(address(this));
+
+        IZeroEx(payable(addresses.exchangeProxy)).transformERC20{value: 1e18}(
+            // input token
+            IERC20TokenV06(LibERC20Transformer.ETH_TOKEN_ADDRESS),
+            // output token
+            IERC20TokenV06(address(addresses.etherToken)),
+            // input token amount
+            1e18,
+            // min output token amount
+            1e18,
+            // list of transform
+            transformations
+        );
+        log_named_uint("        NativeAsset balance before", balanceETHBefore);
+        log_named_uint("        ERC-20 balance before", balanceWETHBefore);
+        log_named_uint("        NativeAsset balance after", balanceETHBefore - address(this).balance);
+        log_named_uint(
+            "        ERC-20 balance after",
+            IERC20TokenV06(addresses.etherToken).balanceOf(address(this)) - balanceWETHBefore
+        );
+    }
+}

contracts/zero-ex/contracts/test/foundry/forked/SwapNativeToERC20RFQTv2.sol

@@ -0,0 +1,171 @@
+pragma solidity ^0.6;
+
+pragma experimental ABIEncoderV2;
+
+import "../utils/ForkUtils.sol";
+import "../utils/TestUtils.sol";
+import "src/IZeroEx.sol";
+import "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
+import "src/features/TransformERC20Feature.sol";
+import "src/external/TransformerDeployer.sol";
+import "src/transformers/WethTransformer.sol";
+import "src/transformers/FillQuoteTransformer.sol";
+import "src/transformers/bridges/BridgeProtocols.sol";
+import "src/features/OtcOrdersFeature.sol";
+
+contract SwapNativeToERC20RFQTv2 is Test, ForkUtils, TestUtils {
+    /*//////////////////////////////////////////////////////////////
+                                 Rpc Setup
+    //////////////////////////////////////////////////////////////*/
+    function setUp() public {
+        _setup();
+    }
+
+    /*//////////////////////////////////////////////////////////////
+                                 Dispatch
+    //////////////////////////////////////////////////////////////*/
+
+    function testSwapEthForUSDTThroughFqtOtcs() public {
+        log_string("SwapEthForUSDTThroughFqtOtc");
+        /* */
+        for (uint256 i = 0; i < 1; i++) {
+            //skip fantom/avax failing test
+            if (i == 3 || i == 4) {
+                continue;
+            }
+            vm.selectFork(forkIds[chains[i]]);
+            log_named_string("  Selecting Fork On", chains[i]);
+            vm.deal(address(this), 1e18);
+            labelAddresses(
+                chains[i],
+                indexChainsByChain[chains[i]],
+                getTokens(i),
+                getContractAddresses(i),
+                getLiquiditySourceAddresses(i)
+            );
+            swapWithOtcOrder(getTokens(i), getContractAddresses(i), getLiquiditySourceAddresses(i));
+        }
+    }
+
+    /*//////////////////////////////////////////////////////////////
+                                 Settlement
+    //////////////////////////////////////////////////////////////*/
+
+    function swapWithOtcOrder(
+        TokenAddresses memory tokens,
+        Addresses memory addresses,
+        LiquiditySources memory sources
+    ) public onlyForked {
+        IZERO_EX = IZeroEx(addresses.exchangeProxy);
+        address USDC = address(tokens.USDC);
+        // Create our list of transformations, let's do WethTransformer and FillQuoteTransformer
+        ITransformERC20Feature.Transformation[] memory transformations = new ITransformERC20Feature.Transformation[](2);
+
+        /*//////////////////////////////////////////////////////////////
+                                WethTransformer
+        //////////////////////////////////////////////////////////////*/
+
+        // Use our cheeky search helper to find the nonce rather than hardcode it
+        transformations[0].deploymentNonce = _findTransformerNonce(
+            address(addresses.wethTransformer),
+            address(addresses.exchangeProxyTransformerDeployer)
+        );
+        emit log_named_uint("           WethTransformer nonce", transformations[0].deploymentNonce);
+        createNewFQT(tokens.WrappedNativeToken, addresses.exchangeProxy, addresses.exchangeProxyTransformerDeployer);
+        // Set the first transformation to transform ETH into WETH
+        transformations[0].data = abi.encode(LibERC20Transformer.ETH_TOKEN_ADDRESS, 1e18);
+
+        /*//////////////////////////////////////////////////////////////
+                                FillQuoteTransformer
+        //////////////////////////////////////////////////////////////*/
+
+        transformations[1].deploymentNonce = _findTransformerNonce(
+            address(fillQuoteTransformer),
+            address(addresses.exchangeProxyTransformerDeployer)
+        );
+        log_named_uint("           FillQuoteTransformer nonce", transformations[1].deploymentNonce);
+        // Set up the FillQuoteTransformer data
+        FillQuoteTransformer.TransformData memory fqtData;
+        fqtData.side = FillQuoteTransformer.Side.Sell;
+        fqtData.sellToken = IERC20TokenV06(address(tokens.WrappedNativeToken));
+        fqtData.buyToken = tokens.USDC;
+        // the FQT has a sequence, e.g first RFQ then Limit then Bridge
+        // since solidity doesn't support arrays of different types, this is one simple solution
+        // We use a Bridge order type here as we will fill on UniswapV2
+        fqtData.fillSequence = new FillQuoteTransformer.OrderType[](1);
+        fqtData.fillSequence[0] = FillQuoteTransformer.OrderType.Otc;
+        // The amount to fill
+        fqtData.fillAmount = 1e18;
+
+        /*//////////////////////////////////////////////////////////////
+                                Sampling
+        //////////////////////////////////////////////////////////////*/
+
+        /*//////////////////////////////////////////////////////////////
+                                BridgeAdapter
+        //////////////////////////////////////////////////////////////*/
+
+        // Now let's set up an OTC fill
+        fqtData.otcOrders = new FillQuoteTransformer.OtcOrderInfo[](1);
+        LibNativeOrder.OtcOrder memory order;
+        FillQuoteTransformer.OtcOrderInfo memory orderInfo;
+
+        order.makerToken = fqtData.buyToken;
+        order.takerToken = fqtData.sellToken;
+        order.makerAmount = 1e18;
+        order.takerAmount = 1e18;
+        uint privateKey;
+        (order.maker, privateKey) = getSigner();
+        deal(address(order.makerToken), order.maker, 1e20);
+        vm.prank(order.maker);
+        IERC20TokenV06(tokens.USDC).approve(address(addresses.exchangeProxy), 1e20);
+        vm.prank(order.maker);
+
+        order.taker = address(0);
+        order.txOrigin = address(tx.origin);
+        order.expiryAndNonce = encodeExpiryAndNonce(order.maker);
+        orderInfo.order = order;
+
+        (uint8 v, bytes32 r, bytes32 s) = vm.sign(privateKey, IZERO_EX.getOtcOrderHash(order));
+        // How much we want to fill on this order, which can be different to the total
+        // e.g 50/50 split this would be half
+        order.takerAmount = 1e18;
+        // Set this low as the price of ETH/USDC can change
+        order.makerAmount = 1e18;
+
+        orderInfo.signature.signatureType = LibSignature.SignatureType.EIP712;
+        orderInfo.signature.v = v;
+        orderInfo.signature.r = r;
+        orderInfo.signature.s = s;
+
+        orderInfo.maxTakerTokenFillAmount = 1e18;
+
+        fqtData.otcOrders[0] = orderInfo;
+        transformations[1].data = abi.encode(fqtData);
+        log_string("        Successful fill, makerTokens bought");
+        IZERO_EX.transformERC20{value: 1e18}(
+            // input token
+            IERC20TokenV06(LibERC20Transformer.ETH_TOKEN_ADDRESS),
+            // output token
+            tokens.USDC,
+            // input token amount
+            order.takerAmount,
+            // min output token amount
+            order.makerAmount,
+            // list of transform
+            transformations
+        );
+        assert(tokens.USDC.balanceOf(address(this)) > 0);
+    }
+
+    function encodeExpiryAndNonce(address maker) public returns (uint256) {
+        uint256 expiry = (block.timestamp + 120) << 192;
+        uint256 bucket = 0 << 128;
+        uint256 nonce = vm.getNonce(maker);
+        return expiry | bucket | nonce;
+    }
+
+    /*//////////////////////////////////////////////////////////////
+                                HELPERS
+    //////////////////////////////////////////////////////////////*/
+}

contracts/zero-ex/contracts/test/foundry/local/WrapEth.sol

@@ -0,0 +1,89 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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 ^0.6;
+pragma experimental ABIEncoderV2;
+
+import "../utils/ForkUtils.sol";
+import "../utils/TestUtils.sol";
+import "../utils/DeployZeroEx.sol";
+import "forge-std/Test.sol";
+import "src/IZeroEx.sol";
+import "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
+import "src/features/TransformERC20Feature.sol";
+import "src/external/TransformerDeployer.sol";
+import "src/transformers/WethTransformer.sol";
+import "src/transformers/FillQuoteTransformer.sol";
+import "src/transformers/bridges/BridgeProtocols.sol";
+import "src/transformers/bridges/EthereumBridgeAdapter.sol";
+import "src/IZeroEx.sol";
+
+contract WrapEth is Test, ForkUtils, TestUtils {
+    DeployZeroEx.ZeroExDeployed zeroExDeployed;
+
+    function setUp() public {
+        zeroExDeployed = new DeployZeroEx(
+            DeployZeroEx.ZeroExDeployConfiguration(address(0), address(0), address(0), 0, 0, 0, true)
+        ).deployZeroEx();
+
+        vm.deal(address(this), 1e19);
+    }
+
+    function testTransformERC20() public {
+        emit log_string("-----Preparing ETH->WETH transformation through TransformERC20()-----");
+        emit log_string("   --Building Up Transformations--");
+        ITransformERC20Feature.Transformation[] memory transformations = new ITransformERC20Feature.Transformation[](1);
+
+        emit log_named_address("    Finding TransformerDeployer nonce @", address(zeroExDeployed.transformerDeployer));
+        emit log_named_uint(
+            "       Deployer nonce",
+            _findTransformerNonce(
+                address(zeroExDeployed.transformers.wethTransformer),
+                address(zeroExDeployed.transformerDeployer)
+            )
+        );
+        transformations[0].deploymentNonce = _findTransformerNonce(
+            address(zeroExDeployed.transformers.wethTransformer),
+            address(zeroExDeployed.transformerDeployer)
+        );
+        transformations[0].data = abi.encode(LibERC20Transformer.ETH_TOKEN_ADDRESS, 1e18);
+
+        emit log_string("   ---Calling TransformERC20()---");
+        uint256 balanceETHBefore = address(this).balance;
+        uint256 balanceWETHBefore = zeroExDeployed.weth.balanceOf(address(this));
+        zeroExDeployed.zeroEx.transformERC20{value: 1e18}(
+            // input token
+            IERC20TokenV06(LibERC20Transformer.ETH_TOKEN_ADDRESS),
+            // output token
+            IERC20TokenV06(address(zeroExDeployed.weth)),
+            // input token amount
+            1e18,
+            // min output token amount
+            1e18,
+            // list of transform
+            transformations
+        );
+        assert(zeroExDeployed.weth.balanceOf(address(this)) == 1e18);
+        emit log_string("       Successful Transformation Complete");
+        emit log_named_uint("           ETH BALANCE BEFORE:", balanceETHBefore);
+        emit log_named_uint("           ETH BALANCE AFTER:", address(this).balance);
+        emit log_named_uint("           WETH BALANCE BEFORE:", balanceWETHBefore);
+        emit log_named_uint("           WETH BALANCE AFTER:", zeroExDeployed.weth.balanceOf(address(this)));
+    }
+}

contracts/zero-ex/contracts/test/foundry/utils/DeployZeroEx.sol

@@ -0,0 +1,338 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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 ^0.6;
+pragma experimental ABIEncoderV2;
+
+import "forge-std/Test.sol";
+
+import "src/IZeroEx.sol";
+import "src/ZeroEx.sol";
+import "src/migrations/InitialMigration.sol";
+import "src/features/OwnableFeature.sol";
+import "src/features/SimpleFunctionRegistryFeature.sol";
+import "src/features/NativeOrdersFeature.sol";
+import "src/features/BatchFillNativeOrdersFeature.sol";
+import "src/features/FundRecoveryFeature.sol";
+import "src/features/TransformERC20Feature.sol";
+import "src/features/OtcOrdersFeature.sol";
+import "src/features/MetaTransactionsFeature.sol";
+import "src/features/nft_orders/ERC1155OrdersFeature.sol";
+import "src/features/nft_orders/ERC721OrdersFeature.sol";
+import "src/features/UniswapFeature.sol";
+import "src/features/UniswapV3Feature.sol";
+import "src/features/multiplex/MultiplexFeature.sol";
+import "src/external/TransformerDeployer.sol";
+import "src/external/FeeCollectorController.sol";
+import "src/external/LiquidityProviderSandbox.sol";
+import "src/transformers/WethTransformer.sol";
+import "src/transformers/FillQuoteTransformer.sol";
+import "src/transformers/PayTakerTransformer.sol";
+import "src/transformers/AffiliateFeeTransformer.sol";
+import "src/transformers/PositiveSlippageFeeTransformer.sol";
+import "src/transformers/bridges/IBridgeAdapter.sol";
+import "src/transformers/bridges/EthereumBridgeAdapter.sol";
+
+import "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
+import "@0x/contracts-erc20/contracts/src/v06/WETH9V06.sol";
+
+contract DeployZeroEx is Test {
+    ZeroEx public ZERO_EX = ZeroEx(0xDef1C0ded9bec7F1a1670819833240f027b25EfF);
+    IZeroEx public IZERO_EX = IZeroEx(address(ZERO_EX));
+    address VANITY_DEPLOYER_ADDRESS = 0xe750ad66DE350F8110E305fb78Ec6A9f594445E3;
+    bytes deployerBytecode =
+        hex"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";
+
+    address[] transformerSigners = [address(this)];
+
+    bool isDeployed = false;
+
+    struct Features {
+        NativeOrdersFeature nativeOrdersFeature;
+        BatchFillNativeOrdersFeature batchFillNativeOrdersFeature;
+        OtcOrdersFeature otcOrdersFeature;
+        UniswapFeature uniswapFeature;
+        UniswapV3Feature uniswapV3Feature;
+        FundRecoveryFeature fundRecoveryFeature;
+        TransformERC20Feature transformERC20Feature;
+        MetaTransactionsFeature metaTransactionsFeature;
+        ERC1155OrdersFeature erc1155OrdersFeature;
+        ERC721OrdersFeature erc721OrdersFeature;
+        MultiplexFeature multiplexFeature;
+    }
+
+    struct Transformers {
+        FillQuoteTransformer fillQuoteTransformer;
+        WethTransformer wethTransformer;
+        AffiliateFeeTransformer affiliateFeeTransformer;
+        PayTakerTransformer payTakerTransformer;
+    }
+
+    struct ZeroExDeployed {
+        IZeroEx zeroEx;
+        TransformerDeployer transformerDeployer;
+        FeeCollectorController feeCollectorController;
+        IStaking staking; // address(0)
+        // Features
+        Features features;
+        // Transformers
+        Transformers transformers;
+        IEtherTokenV06 weth;
+    }
+
+    ZeroExDeployed ZERO_EX_DEPLOYED;
+
+    struct ZeroExDeployConfiguration {
+        address uniswapFactory;
+        address sushiswapFactory;
+        address uniswapV3Factory;
+        bytes32 uniswapPairInitCodeHash;
+        bytes32 sushiswapPairInitCodeHash;
+        bytes32 uniswapV3PoolInitCodeHash;
+        bool logDeployed;
+    }
+
+    ZeroExDeployConfiguration ZERO_EX_DEPLOY_CONFIG;
+
+    constructor(ZeroExDeployConfiguration memory configuration) public {
+        ZERO_EX_DEPLOY_CONFIG = configuration;
+    }
+
+    function getDeployedZeroEx() public returns (ZeroExDeployed memory) {
+        if (!isDeployed) {
+            deployZeroEx();
+        }
+        return ZERO_EX_DEPLOYED;
+    }
+
+    function logDeployedZeroEx() public {
+        emit log_string("--- Deployed ZeroEx ---");
+        emit log_named_address("ZeroEx", address(ZERO_EX));
+        emit log_named_address("TransformerDeployer", address(ZERO_EX_DEPLOYED.transformerDeployer));
+        emit log_named_address("FeeCollectorController", address(ZERO_EX_DEPLOYED.feeCollectorController));
+        emit log_named_address("Staking", address(ZERO_EX_DEPLOYED.staking));
+
+        emit log_string("----- Features -----");
+        emit log_named_address("NativeOrdersFeature", address(ZERO_EX_DEPLOYED.features.nativeOrdersFeature));
+        emit log_named_address(
+            "BatchFillNativeOrdersFeature",
+            address(ZERO_EX_DEPLOYED.features.batchFillNativeOrdersFeature)
+        );
+        emit log_named_address("OtcOrdersFeature", address(ZERO_EX_DEPLOYED.features.otcOrdersFeature));
+        emit log_named_address("UniswapFeature", address(ZERO_EX_DEPLOYED.features.uniswapFeature));
+        emit log_named_address("UniswapV3Feature", address(ZERO_EX_DEPLOYED.features.uniswapV3Feature));
+        emit log_named_address("FundRecoveryFeature", address(ZERO_EX_DEPLOYED.features.fundRecoveryFeature));
+        emit log_named_address("MetaTransactionsFeature", address(ZERO_EX_DEPLOYED.features.metaTransactionsFeature));
+        emit log_named_address("ERC1155OrdersFeature", address(ZERO_EX_DEPLOYED.features.erc1155OrdersFeature));
+        emit log_named_address("ERC721OrdersFeature", address(ZERO_EX_DEPLOYED.features.erc721OrdersFeature));
+        emit log_named_address("TransformERC20Feature", address(ZERO_EX_DEPLOYED.features.transformERC20Feature));
+        emit log_named_address("MultiplexFeature", address(ZERO_EX_DEPLOYED.features.multiplexFeature));
+
+        emit log_string("----- Transformers -----");
+        emit log_named_address("FillQuoteTransformer", address(ZERO_EX_DEPLOYED.transformers.fillQuoteTransformer));
+        emit log_named_address("WethTransformer", address(ZERO_EX_DEPLOYED.transformers.wethTransformer));
+        emit log_named_address(
+            "AffiliateFeeTransformer",
+            address(ZERO_EX_DEPLOYED.transformers.affiliateFeeTransformer)
+        );
+        emit log_named_address("PayTakerTransformer", address(ZERO_EX_DEPLOYED.transformers.payTakerTransformer));
+
+        emit log_string("----- Other -----");
+        emit log_named_address("WETH", address(ZERO_EX_DEPLOYED.weth));
+    }
+
+    function deployZeroEx() public returns (ZeroExDeployed memory) {
+        if (isDeployed) {
+            return ZERO_EX_DEPLOYED;
+        }
+
+        ZERO_EX_DEPLOYED.weth = IEtherTokenV06(address(new WETH9V06()));
+        InitialMigration initialMigration = new InitialMigration(address(this));
+        // Append the required ZeroEx constructor arguments (address bootstrapper)
+        bytes memory zeroExDeploycode = abi.encodePacked(type(ZeroEx).creationCode, abi.encode(initialMigration));
+        // Append the required deployer code constructor arguments (bytes initCode)
+        bytes memory deployerDeploycode = abi.encodePacked(deployerBytecode, abi.encode(zeroExDeploycode));
+        // HERE BE DRAGONS, feel free to ignore this for now
+        // We want to deploy the ZeroEx contract, at 0xDef1C0ded9bec7F1a1670819833240f027b25EfF
+
+        // We use a special mechanism to deploy the ZeroEx contract.
+        // Must occur from this address as the first transaction
+        // The address is technically emitted in an event, but we know we did it correctly
+        //│   │   ├─  emit topic 0: 0xf40fcec21964ffb566044d083b4073f29f7f7929110ea19e1b3ebe375d89055e
+        //│   │   │           data: 0x000000000000000000000000def1c0ded9bec7f1a1670819833240f027b25eff
+        hoax(VANITY_DEPLOYER_ADDRESS);
+        assembly {
+            pop(create(0, add(deployerDeploycode, 0x20), mload(deployerDeploycode)))
+        }
+        // Staking = address(0);
+        ZERO_EX_DEPLOYED.staking = IStaking(address(0));
+        ZERO_EX_DEPLOYED.transformerDeployer = new TransformerDeployer(transformerSigners);
+        ZERO_EX_DEPLOYED.feeCollectorController = new FeeCollectorController(
+            IEtherTokenV06(ZERO_EX_DEPLOYED.weth),
+            IStaking(ZERO_EX_DEPLOYED.staking)
+        );
+
+        // Features
+        ZERO_EX_DEPLOYED.features.transformERC20Feature = new TransformERC20Feature();
+        ZERO_EX_DEPLOYED.features.nativeOrdersFeature = new NativeOrdersFeature(
+            address(ZERO_EX), // EP address
+            ZERO_EX_DEPLOYED.weth,
+            ZERO_EX_DEPLOYED.staking,
+            ZERO_EX_DEPLOYED.feeCollectorController, // feeCollectorController address
+            uint32(0) // protocolFeeMultiplier
+        );
+        ZERO_EX_DEPLOYED.features.batchFillNativeOrdersFeature = new BatchFillNativeOrdersFeature(address(ZERO_EX));
+        ZERO_EX_DEPLOYED.features.otcOrdersFeature = new OtcOrdersFeature(address(ZERO_EX), ZERO_EX_DEPLOYED.weth);
+        ZERO_EX_DEPLOYED.features.uniswapFeature = new UniswapFeature(ZERO_EX_DEPLOYED.weth);
+        ZERO_EX_DEPLOYED.features.uniswapV3Feature = new UniswapV3Feature(
+            ZERO_EX_DEPLOYED.weth,
+            ZERO_EX_DEPLOY_CONFIG.uniswapV3Factory,
+            ZERO_EX_DEPLOY_CONFIG.uniswapV3PoolInitCodeHash
+        );
+        ZERO_EX_DEPLOYED.features.fundRecoveryFeature = new FundRecoveryFeature();
+        ZERO_EX_DEPLOYED.features.metaTransactionsFeature = new MetaTransactionsFeature(address(ZERO_EX));
+        ZERO_EX_DEPLOYED.features.erc1155OrdersFeature = new ERC1155OrdersFeature(
+            address(ZERO_EX),
+            ZERO_EX_DEPLOYED.weth
+        );
+        ZERO_EX_DEPLOYED.features.erc721OrdersFeature = new ERC721OrdersFeature(
+            address(ZERO_EX),
+            ZERO_EX_DEPLOYED.weth
+        );
+        ZERO_EX_DEPLOYED.features.multiplexFeature = new MultiplexFeature(
+            address(ZERO_EX),
+            ZERO_EX_DEPLOYED.weth,
+            new LiquidityProviderSandbox(address(ZERO_EX)),
+            ZERO_EX_DEPLOY_CONFIG.uniswapFactory,
+            ZERO_EX_DEPLOY_CONFIG.sushiswapFactory,
+            ZERO_EX_DEPLOY_CONFIG.uniswapPairInitCodeHash,
+            ZERO_EX_DEPLOY_CONFIG.sushiswapPairInitCodeHash
+        );
+
+        initialMigration.initializeZeroEx(
+            payable(address(this)),
+            ZERO_EX,
+            InitialMigration.BootstrapFeatures({
+                registry: new SimpleFunctionRegistryFeature(),
+                ownable: new OwnableFeature()
+            })
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.batchFillNativeOrdersFeature),
+            abi.encodeWithSelector(BatchFillNativeOrdersFeature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.transformERC20Feature),
+            abi.encodeWithSelector(
+                TransformERC20Feature.migrate.selector,
+                address(ZERO_EX_DEPLOYED.transformerDeployer)
+            ),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.nativeOrdersFeature),
+            abi.encodeWithSelector(NativeOrdersFeature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.otcOrdersFeature),
+            abi.encodeWithSelector(OtcOrdersFeature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.uniswapFeature),
+            abi.encodeWithSelector(UniswapFeature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.uniswapV3Feature),
+            abi.encodeWithSelector(UniswapV3Feature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.fundRecoveryFeature),
+            abi.encodeWithSelector(FundRecoveryFeature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.metaTransactionsFeature),
+            abi.encodeWithSelector(MetaTransactionsFeature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.erc1155OrdersFeature),
+            abi.encodeWithSelector(ERC1155OrdersFeature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.erc721OrdersFeature),
+            abi.encodeWithSelector(ERC721OrdersFeature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.multiplexFeature),
+            abi.encodeWithSelector(MultiplexFeature.migrate.selector),
+            address(this)
+        );
+
+        // Transformers
+        ZERO_EX_DEPLOYED.transformers.wethTransformer = WethTransformer(
+            ZERO_EX_DEPLOYED.transformerDeployer.deploy(
+                abi.encodePacked(
+                    // Deploy the WethTransformer code
+                    type(WethTransformer).creationCode,
+                    // WethTransformer takes WETH address as a constructor argument
+                    abi.encode(address(ZERO_EX_DEPLOYED.weth))
+                )
+            )
+        );
+
+        // Deploy the FQT, NOTE: No bridge adapter in tests
+        ZERO_EX_DEPLOYED.transformers.fillQuoteTransformer = FillQuoteTransformer(
+            ZERO_EX_DEPLOYED.transformerDeployer.deploy(
+                abi.encodePacked(
+                    // Deploy the FQT code
+                    type(FillQuoteTransformer).creationCode,
+                    // FQT takes a BridgeAdapter and ZeroEx
+                    abi.encode(
+                        address(0), // Note: No BridgeAdapter in tests
+                        INativeOrdersFeature(address(ZERO_EX))
+                    )
+                )
+            )
+        );
+
+        ZERO_EX_DEPLOYED.transformers.affiliateFeeTransformer = AffiliateFeeTransformer(
+            ZERO_EX_DEPLOYED.transformerDeployer.deploy(type(AffiliateFeeTransformer).creationCode)
+        );
+
+        ZERO_EX_DEPLOYED.transformers.payTakerTransformer = PayTakerTransformer(
+            ZERO_EX_DEPLOYED.transformerDeployer.deploy(type(PayTakerTransformer).creationCode)
+        );
+
+        ZERO_EX_DEPLOYED.zeroEx = IZERO_EX;
+        isDeployed = true;
+        if (ZERO_EX_DEPLOY_CONFIG.logDeployed) {
+            logDeployedZeroEx();
+        }
+
+        return ZERO_EX_DEPLOYED;
+    }
+}

contracts/zero-ex/contracts/test/foundry/utils/ForkUtils.sol

@@ -0,0 +1,343 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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 ^0.6;
+pragma experimental ABIEncoderV2;
+
+import "forge-std/Test.sol";
+import "src/features/TransformERC20Feature.sol";
+import "src/external/TransformerDeployer.sol";
+import "src/transformers/WethTransformer.sol";
+import "src/transformers/FillQuoteTransformer.sol";
+import "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
+import "@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol";
+import "src/transformers/bridges/BridgeProtocols.sol";
+import "src/transformers/bridges/EthereumBridgeAdapter.sol";
+import "src/transformers/bridges/PolygonBridgeAdapter.sol";
+import "src/transformers/bridges/BSCBridgeAdapter.sol";
+import "src/transformers/bridges/ArbitrumBridgeAdapter.sol";
+import "src/transformers/bridges/OptimismBridgeAdapter.sol";
+import "src/transformers/bridges/AvalancheBridgeAdapter.sol";
+import "src/transformers/bridges/FantomBridgeAdapter.sol";
+import "src/transformers/bridges/CeloBridgeAdapter.sol";
+import "src/IZeroEx.sol";
+
+//contract-addresses/addresses.json interfaces
+//need to be alphebetized in solidity but not in addresses.json
+struct Addresses {
+    address affiliateFeeTransformer;
+    address erc20BridgeProxy;
+    address erc20BridgeSampler;
+    address etherToken;
+    address payable exchangeProxy;
+    address exchangeProxyFlashWallet;
+    address exchangeProxyGovernor;
+    address exchangeProxyLiquidityProviderSandbox;
+    address exchangeProxyTransformerDeployer;
+    address fillQuoteTransformer;
+    address payTakerTransformer;
+    address positiveSlippageFeeTransformer;
+    address staking;
+    address stakingProxy;
+    address wethTransformer;
+    address zeroExGovernor;
+    address zrxToken;
+    address zrxTreasury;
+    address zrxVault;
+}
+
+struct TokenAddresses {
+    IERC20TokenV06 DAI;
+    IERC20TokenV06 USDC;
+    IERC20TokenV06 USDT;
+    IEtherTokenV06 WrappedNativeToken;
+}
+
+struct LiquiditySources {
+    address UniswapV2Router;
+}
+
+interface IFQT {
+    function bridgeAdapter() external returns (address);
+}
+
+interface IUniswapV2Router01 {
+    function getAmountsOut(uint256 amountIn, address[] calldata path) external view returns (uint256[] memory amounts);
+
+    function getAmountsIn(uint256 amountOut, address[] calldata path) external view returns (uint256[] memory amounts);
+}
+
+contract ForkUtils is Test {
+    using stdJson for string;
+
+    string json;
+
+    //forked providers for each chain
+    mapping(string => uint256) public forkIds;
+
+    IZeroEx IZERO_EX;
+
+    IBridgeAdapter bridgeAdapter;
+    FillQuoteTransformer fillQuoteTransformer;
+
+    TokenAddresses tokens;
+    Addresses addresses;
+    LiquiditySources sources;
+
+    uint256 forkBlock = 15_000_000;
+
+    string[] chains = ["mainnet", "bsc", "polygon", "avalanche", "fantom", "optimism", "arbitrum"];
+    string[] indexChainIds = [".1", ".56", ".137", ".43114", ".250", ".10", ".42161"];
+    string[] chainIds = ["1", "56", "137", "43114", "250", "10", "42161"];
+    uint256[] chainId = [1, 56, 137, 43114, 250, 10, 42161];
+
+    //special fork block number for fantom since it produces blocks faster and more frequently
+    uint256[] blockNumber = [forkBlock, forkBlock, 33447149, forkBlock, 32000000, forkBlock, forkBlock];
+
+    string addressesJson;
+    string tokensJson;
+    string sourcesJson;
+
+    //utility mapping to get chainId by name
+    mapping(string => string) public chainsByChainId;
+    //utility mapping to get indexingChainId by Chain
+    mapping(string => string) public indexChainsByChain;
+
+    function createForks() public returns (uint256[] memory) {
+        for (uint256 i = 0; i < chains.length; i++) {
+            forkIds[chains[i]] = vm.createFork(vm.rpcUrl(chains[i]), blockNumber[i]);
+        }
+    }
+
+    //gets a dummy signer to be used for an OTC order
+    function getSigner() public returns (address, uint) {
+        string memory mnemonic = "test test test test test test test test test test test junk";
+        uint256 privateKey = vm.deriveKey(mnemonic, 0);
+
+        vm.label(vm.addr(privateKey), "zeroEx/MarketMaker");
+        return (vm.addr(privateKey), privateKey);
+    }
+
+    //read the uniswapV2 router addresses from file
+    function readLiquiditySourceAddresses() internal returns (string memory) {
+        string memory root = vm.projectRoot();
+        string memory path = string(
+            abi.encodePacked(root, "/", "contracts/test/foundry/addresses/sourceAddresses.json")
+        );
+        sourcesJson = vm.readFile(path);
+        return vm.readFile(path);
+    }
+
+    //retrieve the uniswapV2 router addresses
+    function getLiquiditySourceAddresses(uint index) public returns (LiquiditySources memory sources) {
+        readLiquiditySourceAddresses();
+        bytes memory liquiditySources = sourcesJson.parseRaw(indexChainIds[index]);
+        return abi.decode(liquiditySources, (LiquiditySources));
+    }
+
+    function readAddresses() internal returns (string memory) {
+        string memory root = vm.projectRoot();
+        string memory path = string(abi.encodePacked(root, "/", "contracts/test/foundry/addresses/addresses.json"));
+        addressesJson = vm.readFile(path);
+        return vm.readFile(path);
+    }
+
+    //retrieve the 0xProtocol contract addresses from addresses.json
+    function getContractAddresses(uint index) public returns (Addresses memory addresses) {
+        readAddresses();
+        bytes memory contractAddresses = addressesJson.parseRaw(indexChainIds[index]);
+        return abi.decode(contractAddresses, (Addresses));
+    }
+
+    function readTokens() internal returns (string memory) {
+        string memory root = vm.projectRoot();
+        string memory path = string(
+            abi.encodePacked(root, "/", "contracts/test/foundry/addresses/tokenAddresses.json")
+        );
+        tokensJson = vm.readFile(path);
+        return vm.readFile(path);
+    }
+
+    //retrieve our tokenList from TokenAddresses.json
+    function getTokens(uint index) public returns (TokenAddresses memory addresses) {
+        readTokens();
+        bytes memory chainTokens = tokensJson.parseRaw(indexChainIds[index]);
+        return abi.decode(chainTokens, (TokenAddresses));
+    }
+
+    //creates the appropriate bridge adapter based on what chain the tests are currently executing on.
+    function createBridgeAdapter(IEtherTokenV06 weth) public returns (IBridgeAdapter bridgeAdapter) {
+        uint chainId;
+
+        assembly {
+            chainId := chainid()
+        }
+        if (chainId == uint256(address(0))) {
+            //ERROR: chainId not mapped
+            revert("CHAIN ID NOT MAPPED");
+        }
+        if (chainId == 1) {
+            return IBridgeAdapter(new EthereumBridgeAdapter(weth));
+        } else if (chainId == 56) {
+            return IBridgeAdapter(new BSCBridgeAdapter(weth));
+        } else if (chainId == 137) {
+            return IBridgeAdapter(new PolygonBridgeAdapter(weth));
+        } else if (chainId == 43114) {
+            return IBridgeAdapter(new AvalancheBridgeAdapter(weth));
+        } else if (chainId == 250) {
+            return IBridgeAdapter(new FantomBridgeAdapter(weth));
+        } else if (chainId == 10) {
+            return IBridgeAdapter(new OptimismBridgeAdapter(weth));
+        } else if (chainId == 42161) {
+            return IBridgeAdapter(new ArbitrumBridgeAdapter(weth));
+        }
+    }
+
+    //label the addresses that are read from the various .json files
+    function labelAddresses(
+        string memory chainName,
+        string memory chainId,
+        TokenAddresses memory tokens,
+        Addresses memory addresses,
+        LiquiditySources memory sources
+    ) public {
+        log_named_string("   Using contract addresses on chain", chainName);
+        vm.label(addresses.affiliateFeeTransformer, "zeroEx/affiliateFeeTransformer");
+        vm.label(addresses.erc20BridgeProxy, "zeroEx/erc20BridgeProxy");
+        vm.label(addresses.erc20BridgeSampler, "zeroEx/erc20BridgeSampler");
+        vm.label(addresses.etherToken, "zeroEx/etherToken");
+        vm.label(addresses.exchangeProxy, "zeroEx/exchangeProxy");
+        vm.label(addresses.exchangeProxyFlashWallet, "zeroEx/exchangeProxyFlashWallet");
+        vm.label(addresses.exchangeProxyGovernor, "zeroEx/exchangeProxyGovernor");
+        vm.label(addresses.exchangeProxyLiquidityProviderSandbox, "zeroEx/exchangeProxyLiquidityProviderSandbox");
+        vm.label(addresses.exchangeProxyTransformerDeployer, "zeroEx/exchangeProxyTransformerDeployer");
+        vm.label(addresses.fillQuoteTransformer, "zeroEx/fillQuoteTransformer");
+        vm.label(addresses.payTakerTransformer, "zeroEx/payTakerTransformer");
+        vm.label(addresses.positiveSlippageFeeTransformer, "zeroEx/positiveSlippageFeeTransformer");
+        vm.label(addresses.staking, "zeroEx/staking");
+        vm.label(addresses.stakingProxy, "zeroEx/stakingProxy");
+        vm.label(addresses.wethTransformer, "zeroEx/wethTransformer");
+        vm.label(addresses.zeroExGovernor, "zeroEx/zeroExGovernor");
+        vm.label(addresses.zrxToken, "zeroEx/zrxToken");
+        vm.label(addresses.zrxTreasury, "zeroEx/zrxTreasury");
+        vm.label(addresses.zrxVault, "zeroEx/zrxVault");
+        vm.label(address(tokens.WrappedNativeToken), "WrappedNativeToken");
+        vm.label(address(tokens.USDT), "USDT");
+        vm.label(address(tokens.USDC), "USDC");
+        vm.label(address(tokens.DAI), "DAI");
+        vm.label(address(sources.UniswapV2Router), "UniswapRouter");
+    }
+
+    //deploy a new FillQuoteTransformer
+    //executes in the context of the transformerDeployer
+    function createNewFQT(
+        IEtherTokenV06 wrappedNativeToken,
+        address payable exchangeProxy,
+        address transformerDeployer
+    ) public {
+        vm.startPrank(transformerDeployer);
+        // deploy a new instance of the bridge adapter from the transformerDeployer
+        bridgeAdapter = createBridgeAdapter(IEtherTokenV06(wrappedNativeToken));
+        // deploy a new instance of the fill quote transformer from the transformerDeployer
+        fillQuoteTransformer = new FillQuoteTransformer(IBridgeAdapter(bridgeAdapter), IZeroEx(exchangeProxy));
+        vm.label(address(fillQuoteTransformer), "zeroEx/FillQuoteTransformer");
+        vm.stopPrank();
+    }
+
+    //utility function to be called in the `setUp()` function of a test
+    //creates a fork and retrieves the correct addresses based on chainId
+    function _setup() public {
+        //get our addresses.json file that defines contract addresses for each chain we are currently deployed on
+        string memory root = vm.projectRoot();
+        string memory path = string(abi.encodePacked(root, "/", "contracts/test/foundry/addresses/addresses.json"));
+        json = vm.readFile(path);
+        createForks();
+
+        for (uint256 i = 0; i < chains.length; i++) {
+            chainsByChainId[chains[i]] = chainIds[i];
+            indexChainsByChain[chains[i]] = indexChainIds[i];
+            bytes memory details = json.parseRaw(indexChainIds[i]);
+            addresses = abi.decode(details, (Addresses));
+        }
+    }
+
+    /// @dev Sample sell quotes from UniswapV2.
+    /// @param router Router to look up tokens and amounts
+    /// @param path Token route. Should be takerToken -> makerToken.
+    /// @param takerTokenAmounts Taker token sell amount for each sample.
+    /// @return makerTokenAmounts Taker amounts sold at each maker token
+    ///         amount.
+    function sampleSellsFromUniswapV2(
+        address router,
+        address[] memory path,
+        uint256[] memory takerTokenAmounts
+    ) public view returns (uint256[] memory makerTokenAmounts) {
+        uint256 numSamples = takerTokenAmounts.length;
+        makerTokenAmounts = new uint256[](numSamples);
+        for (uint256 i = 0; i < numSamples; i++) {
+            try IUniswapV2Router01(router).getAmountsOut(takerTokenAmounts[i], path) returns (
+                uint256[] memory amounts
+            ) {
+                makerTokenAmounts[i] = amounts[path.length - 1];
+                // Break early if there are 0 amounts
+                if (makerTokenAmounts[i] == 0) {
+                    break;
+                }
+            } catch (bytes memory) {
+                // Swallow failures, leaving all results as zero.
+                break;
+            }
+        }
+    }
+
+    /// @dev Sample buy quotes from UniswapV2.
+    /// @param router Router to look up tokens and amounts
+    /// @param path Token route. Should be takerToken -> makerToken.
+    /// @param makerTokenAmounts Maker token buy amount for each sample.
+    /// @return takerTokenAmounts Taker amounts sold at each maker token
+    ///         amount.
+    function sampleBuysFromUniswapV2(
+        address router,
+        address[] memory path,
+        uint256[] memory makerTokenAmounts
+    ) public view returns (uint256[] memory takerTokenAmounts) {
+        uint256 numSamples = makerTokenAmounts.length;
+        takerTokenAmounts = new uint256[](numSamples);
+        for (uint256 i = 0; i < numSamples; i++) {
+            try IUniswapV2Router01(router).getAmountsIn(makerTokenAmounts[i], path) returns (uint256[] memory amounts) {
+                takerTokenAmounts[i] = amounts[0];
+                // Break early if there are 0 amounts
+                if (takerTokenAmounts[i] == 0) {
+                    break;
+                }
+            } catch (bytes memory) {
+                // Swallow failures, leaving all results as zero.
+                break;
+            }
+        }
+    }
+
+    modifier onlyForked() {
+        if (block.number >= 15000000) {
+            _;
+        } else {
+            emit log_string("Requires fork mode, skipping");
+        }
+    }
+}

contracts/zero-ex/contracts/test/foundry/utils/TestUtils.sol

@@ -18,13 +18,20 @@
 */
 
 pragma solidity ^0.6;
+pragma experimental ABIEncoderV2;
 
 import "forge-std/Test.sol";
 
-contract ContractTest is Test {
-    function setUp() public {}
+import "src/transformers/LibERC20Transformer.sol";
 
-    function testExample() public {
-        assertTrue(true);
+contract TestUtils is Test {
+    function _findTransformerNonce(address transformer, address deployer) internal pure returns (uint32) {
+        address current;
+        for (uint32 i = 0; i < 1024; i++) {
+            current = LibERC20Transformer.getDeployedAddress(deployer, i);
+            if (current == transformer) {
+                return i;
+            }
+        }
     }
 }

contracts/zero-ex/foundry.toml

@@ -1,8 +1,34 @@
 [profile.default]
 src = 'contracts/src'
 out = 'foundry-artifacts'
-test = 'contracts/test/foundry'
+test = 'contracts/test/foundry/local'
 libs = ["contracts/deps/", "../utils/contracts/src/"]
-remappings = ['@0x/contracts-utils/=../utils/', '@0x/contracts-erc20/=../erc20/', 'src/=./contracts/src']
+remappings = [
+    'forge-std/=contracts/deps/forge-std/src/',
+    'ds-test/=contracts/deps/forge-std/lib/ds-test/src/',
+    '@0x/contracts-utils/=../utils/',
+    '@0x/contracts-erc20/=../erc20/',
+    'src/=./contracts/src',
+    '@0x/contract-addresses/=../../packages/contract-addresses',
+    'samplers/=contracts/test/samplers',
+]
 cache_path = 'foundry-cache'
 optimizer_runs = 1000000
+fs_permissions = [
+    { access = "read-write", path = "./contracts/test/foundry/addresses" },
+]
+verbosity = 3
+
+[profile.local]
+test = 'contracts/test/foundry/local'
+[profile.forked]
+test = 'contracts/test/foundry/forked'
+
+[rpc_endpoints]
+arbitrum = "${ARBITRUM_RPC_URL}"
+avalanche = "${AVALANCHE_RPC_URL}"
+bsc = "${BSC_RPC_URL}"
+fantom = "${FANTOM_RPC_URL}"
+mainnet = "${MAINNET_RPC_URL}"
+optimism = "${OPTIMISM_RPC_URL}"
+polygon = "${POLYGON_RPC_URL}"

contracts/zero-ex/package.json

@@ -15,6 +15,7 @@
         "build:ts": "tsc -b",
         "pre_build": "run-s compile contracts:gen generate_contract_wrappers contracts:copy",
         "test": "yarn run_mocha",
+        "forge": "forge test -vvv",
         "rebuild_and_test": "run-s build test",
         "test:coverage": "SOLIDITY_COVERAGE=true run-s build run_mocha coverage:report:text coverage:report:lcov",
         "test:profiler": "SOLIDITY_PROFILER=true run-s build run_mocha profiler:report:html",