Merge branch 'master' into remainingTokenMethods

# Conflicts:
#	src/contract_wrappers/token_wrapper.ts

2 files changed, 8 insertions, 0 deletions

diff --git a/src/utils/assert.ts b/src/utils/assert.ts
index 446974b10..5a31e1b16 100644
--- a/src/utils/assert.ts
+++ b/src/utils/assert.ts
@@ -3,6 +3,7 @@ import * as BigNumber from 'bignumber.js';
 import * as Web3 from 'web3';
 import {Web3Wrapper} from '../web3_wrapper';
 import {SchemaValidator} from './schema_validator';
+import {utils} from './utils';
 
 const HEX_REGEX = /^0x[0-9A-F]*$/i;
 
@@ -33,6 +34,9 @@ export const assert = {
     isNumber(variableName: string, value: number): void {
         this.assert(_.isFinite(value), this.typeAssertionMessage(variableName, 'number', value));
     },
+    isValidOrderHash(variableName: string, value: string): void {
+        this.assert(utils.isValidOrderHash(value), this.typeAssertionMessage(variableName, 'orderHash', value));
+    },
     isBoolean(variableName: string, value: boolean): void {
         this.assert(_.isBoolean(value), this.typeAssertionMessage(variableName, 'boolean', value));
     },
diff --git a/src/utils/utils.ts b/src/utils/utils.ts
index 336eaf7bb..e6840a624 100644
--- a/src/utils/utils.ts
+++ b/src/utils/utils.ts
@@ -18,4 +18,8 @@ export const utils = {
     isParityNode(nodeVersion: string): boolean {
         return _.includes(nodeVersion, 'Parity');
     },
+    isValidOrderHash(orderHashHex: string) {
+        const isValid = /^0x[0-9A-F]{64}$/i.test(orderHashHex);
+        return isValid;
+    },
 };