Merge pull request #11 from 0xProject/isValidOrderHash

Port isValidOrderHash and tests

1 files changed, 7 insertions, 1 deletions

diff --git a/src/ts/utils/assert.ts b/src/ts/utils/assert.ts
index 972047118..2f52c6a3b 100644
--- a/src/ts/utils/assert.ts
+++ b/src/ts/utils/assert.ts
@@ -3,6 +3,8 @@ import * as BigNumber from 'bignumber.js';
 import Web3 = require('web3');
 import {SchemaValidator} from './schema_validator';
 
+const HEX_REGEX = /^0x[0-9A-F]*$/i;
+
 export const assert = {
     isBigNumber(variableName: string, value: BigNumber.BigNumber) {
         const isBigNumber = _.isObject(value) && value.isBigNumber;
@@ -11,7 +13,11 @@ export const assert = {
     isString(variableName: string, value: string) {
         this.assert(_.isString(value), this.typeAssertionMessage(variableName, 'string', value));
     },
-    isETHAddressHex(variableName: string, value: ETHAddressHex) {
+    isHexString(variableName: string, value: string) {
+        this.assert(_.isString(value) && HEX_REGEX.test(value),
+            this.typeAssertionMessage(variableName, 'HexString', value));
+    },
+    isETHAddressHex(variableName: string, value: string) {
         const web3 = new Web3();
         this.assert(web3.isAddress(value), this.typeAssertionMessage(variableName, 'ETHAddressHex', value));
     },