Add TEC integration tests

contracts/tec/test/utils/approval_factory.ts

@@ -6,22 +6,26 @@ import { hashUtils, SignedTECApproval, signingUtils, TECSignatureType } from './
 
 export class ApprovalFactory {
     private readonly _privateKey: Buffer;
-    constructor(privateKey: Buffer) {
+    private readonly _verifyingContractAddress: string;
+    constructor(privateKey: Buffer, verifyingContractAddress: string) {
         this._privateKey = privateKey;
+        this._verifyingContractAddress = verifyingContractAddress;
     }
     public newSignedApproval(
         transaction: SignedZeroExTransaction,
         approvalExpirationTimeSeconds: BigNumber,
         signatureType: TECSignatureType = TECSignatureType.EthSign,
     ): SignedTECApproval {
-        const approvalHashBuff = hashUtils.getApprovalHashBuffer(transaction, approvalExpirationTimeSeconds);
+        const tecTransaction = {
+            ...transaction,
+            verifyingContractAddress: this._verifyingContractAddress,
+        };
+        const approvalHashBuff = hashUtils.getApprovalHashBuffer(tecTransaction, approvalExpirationTimeSeconds);
         const signatureBuff = signingUtils.signMessage(approvalHashBuff, this._privateKey, signatureType);
-        const transactionHash = hashUtils.getTransactionHashHex(transaction);
         const signedApproval = {
-            transactionHash,
+            transaction: tecTransaction,
             approvalExpirationTimeSeconds,
-            transactionSignature: transaction.signature,
-            approvalSignature: ethUtil.addHexPrefix(signatureBuff.toString('hex')),
+            signature: ethUtil.addHexPrefix(signatureBuff.toString('hex')),
         };
         return signedApproval;
     }

contracts/tec/test/utils/constants.ts

@@ -1,3 +1,5 @@
+import { BigNumber } from '@0x/utils';
+
 export const constants = {
     TEC_DOMAIN_NAME: '0x Protocol Trade Execution Coordinator',
     TEC_DOMAIN_VERSION: '1.0.0',
@@ -16,4 +18,5 @@ export const constants = {
     CANCEL_ORDERS: 'cancelOrders',
     BATCH_CANCEL_ORDERS: 'batchCancelOrders',
     CANCEL_ORDERS_UP_TO: 'cancelOrdersUpTo',
+    TIME_BUFFER: new BigNumber(1000),
 };

contracts/tec/test/utils/exchange_data_encoder.ts

@@ -27,7 +27,7 @@ export const exchangeDataEncoder = {
         } else if (constants.MARKET_FILL_FN_NAMES.indexOf(fnName) !== -1) {
             data = (exchangeInstance as any)[fnName].getABIEncodedTransactionData(
                 orders,
-                orders[0].takerAssetAmount,
+                orders.map(order => order.takerAssetAmount).reduce((prev, curr) => prev.plus(curr)),
                 orders.map(order => order.signature),
             );
         } else if (fnName === constants.MATCH_ORDERS) {

contracts/tec/test/utils/types.ts

@@ -1,13 +1,13 @@
+import { SignedZeroExTransaction } from '@0x/types';
 import { BigNumber } from '@0x/utils';
 
 export interface TECApproval {
-    transactionHash: string;
-    transactionSignature: string;
+    transaction: SignedZeroExTransaction;
     approvalExpirationTimeSeconds: BigNumber;
 }
 
 export interface SignedTECApproval extends TECApproval {
-    approvalSignature: string;
+    signature: string;
 }
 
 export enum TECSignatureType {