Renamed tec package to coordinator package

contracts/coordinator/test/utils/approval_factory.ts

@@ -0,0 +1,32 @@
+import { SignedZeroExTransaction } from '@0x/types';
+import { BigNumber } from '@0x/utils';
+import * as ethUtil from 'ethereumjs-util';
+
+import { hashUtils, SignedCoordinatorApproval, signingUtils, CoordinatorSignatureType } from './index';
+
+export class ApprovalFactory {
+    private readonly _privateKey: Buffer;
+    private readonly _verifyingContractAddress: string;
+    constructor(privateKey: Buffer, verifyingContractAddress: string) {
+        this._privateKey = privateKey;
+        this._verifyingContractAddress = verifyingContractAddress;
+    }
+    public newSignedApproval(
+        transaction: SignedZeroExTransaction,
+        approvalExpirationTimeSeconds: BigNumber,
+        signatureType: CoordinatorSignatureType = CoordinatorSignatureType.EthSign,
+    ): SignedCoordinatorApproval {
+        const coordinatorTransaction = {
+            ...transaction,
+            verifyingContractAddress: this._verifyingContractAddress,
+        };
+        const approvalHashBuff = hashUtils.getApprovalHashBuffer(coordinatorTransaction, approvalExpirationTimeSeconds);
+        const signatureBuff = signingUtils.signMessage(approvalHashBuff, this._privateKey, signatureType);
+        const signedApproval = {
+            transaction: coordinatorTransaction,
+            approvalExpirationTimeSeconds,
+            signature: ethUtil.addHexPrefix(signatureBuff.toString('hex')),
+        };
+        return signedApproval;
+    }
+}