feat: v4 final (#136)

* v4 FillQuoteTransformer (#104)

* Update FQT to support v4 orders

* `@0x/contracts-zero-ex`: Tweak FQT
`@0x/contracts-zero-ex`: Drop `ERC20BridgeTransfer` event and add `PartialQuoteFill` event.

* `@0x/contracts-utils`: Add `LibSafeMathV06.downcastToUint128()`

* `@0x/protocol-utils`: Update transformer utils for V4 FQT

* `@0x/contracts-zero-ex`: Fixing FQT tests...

* `@0x/contracts-zero-ex`: rename FQT bridge event

* `@0x/contracts-zero-ex`: Un-`only` tests

* `@0x/migrations`: Update `BridgeAdapter` deployment

* `@0x/contracts-integrations`: Delete `mtx_tests`

* `@0x/protocol-utils`: Address review comments

* `@0x/contracts-zero-ex`: Address review comments

* `@0x/migrations`: Update migrations

Co-authored-by: Michael Zhu <mchl.zhu.96@gmail.com>
Co-authored-by: Lawrence Forman <me@merklejerk.com>

* v4: Asset-swapper (main branch) (#113)

* refactor quote_requestor

* WIP v4/asset-swapper: Clean up SwapQuoter and remove @0x/orderbook

* Start replacing SignedOrder everywhere

* wip: new order type

* wip

* remove order-utils from most places

* hack: Play around with VerboseX types (#119)

* hack: Play around with VerboseX types

* More hacks

* Fix up the bridgeData encodings

* Rework Orderbook return type

* feat: Don't charge a protocol fee for RFQ orders WIP (#121)

* fix simple build errors

* simplify types a little

* remove SwapQuoteCalculator: unnecessary abstraction

* Fix all ./src build errors; make types consistent

* export more types for use in 0x API; modify Orderbook interface

* stop overriding APIOrder

* feat: RFQ v4 + consolidated bridge encoders (#125)

* feat: check if taker address is contract

* Rework bridge data

* Worst case adjustments

* RFQT v4

* Future/v4 validate orders (#126)

* RFQT v4

* v4 validate native orders

* use default invalid signature

* refactor rfqt validations in swap quoter

* fix types

* fix RFQT unlisted api key

* remove priceAwareRFQFlag

* adjust maker/taker amounts

* update JSON schemas

* filter zero fillable orders

Co-authored-by: xianny <xianny@gmail.com>

* fix type export

Co-authored-by: xianny <xianny@gmail.com>

* remove order-utils as much as possible

* work on tests compile

* Comment out quote reporter test

* updated tests

* restore order-utils accidental changes

* some lints

* Remove old fill_test

* ts lint disable for now

* update quote report

* Re-enable quote report tests

* make fill data required field

* fix lint

* type guards

* force fillData as required

* fix lint

* fix naming

* exports

* adjust MultiBridge by slippage

* cleanups (checkpoint 1)

* cleanup types (checkpoint #2)

* remove unused deps

* `@0x/contract-addresses`: Deploy new FQT (#129)

Co-authored-by: Lawrence Forman <me@merklejerk.com>

* commit bump to republish

* DRY up the rfqt mocker

* fix: Balancer load top pools (#131)

* fix: Balancer load top 250 pools

* refetch top pools on an interval

Co-authored-by: Jacob Evans <jacob@dekz.net>
Co-authored-by: Kim Persson <kimpers@users.noreply.github.com>
Co-authored-by: Lawrence Forman <lawrence@0xproject.com>
Co-authored-by: Lawrence Forman <me@merklejerk.com>

* Update post rebase

* prettier

* Remove test helpers exported in asset-swapper

* Clean up from review comments

* prettier

* lint

* recreate rfqt mocker

* change merge and INVALID_SIGNATURE

Co-authored-by: Lawrence Forman <lawrence@0xproject.com>
Co-authored-by: Michael Zhu <mchl.zhu.96@gmail.com>
Co-authored-by: Lawrence Forman <me@merklejerk.com>
Co-authored-by: Xianny <8582774+xianny@users.noreply.github.com>
Co-authored-by: Kim Persson <kimpers@users.noreply.github.com>

packages/asset-swapper/test/utils/test_helpers.ts

@@ -1,6 +1,14 @@
 import { BigNumber } from '@0x/utils';
+import axios, { AxiosInstance } from 'axios';
+import AxiosMockAdapter from 'axios-mock-adapter';
 
 import { InsufficientAssetLiquidityError } from '../../src/errors';
+import { MockedRfqtQuoteResponse } from '../../src/types';
+
+export enum RfqtQuoteEndpoint {
+    Indicative = 'price',
+    Firm = 'quote',
+}
 
 export const testHelpers = {
     expectInsufficientLiquidityErrorAsync: async (
@@ -23,4 +31,31 @@ export const testHelpers = {
 
         expect(wasErrorThrown).to.be.true();
     },
+    /**
+     * A helper utility for testing which mocks out
+     * requests to RFQ-t providers
+     */
+    withMockedRfqtQuotes: async (
+        mockedResponses: MockedRfqtQuoteResponse[],
+        quoteType: RfqtQuoteEndpoint,
+        afterResponseCallback: () => Promise<void>,
+        axiosClient: AxiosInstance = axios,
+    ): Promise<void> => {
+        const mockedAxios = new AxiosMockAdapter(axiosClient);
+        try {
+            // Mock out RFQT responses
+            for (const mockedResponse of mockedResponses) {
+                const { endpoint, requestApiKey, requestParams, responseData, responseCode } = mockedResponse;
+                const requestHeaders = { Accept: 'application/json, text/plain, */*', '0x-api-key': requestApiKey };
+                mockedAxios
+                    .onGet(`${endpoint}/${quoteType}`, { params: requestParams }, requestHeaders)
+                    .replyOnce(responseCode, responseData);
+            }
+            // Perform the callback function, e.g. a test validation
+            await afterResponseCallback();
+        } finally {
+            // Ensure we always restore axios afterwards
+            mockedAxios.restore();
+        }
+    },
 };