From a786776d7cf52ab70d54e0dc421dc645a412b3c7 Mon Sep 17 00:00:00 2001
From: Leonid Logvinov <logvinov.leon@gmail.com>
Date: Thu, 8 Jun 2017 19:21:46 +0200
Subject: Add assert.hashAtMostOneUniqueValue

---
 src/utils/assert.ts | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/utils')

diff --git a/src/utils/assert.ts b/src/utils/assert.ts
index 4dc6945a2..c7c164ee5 100644
--- a/src/utils/assert.ts
+++ b/src/utils/assert.ts
@@ -42,6 +42,9 @@ export const assert = {
         const availableAddresses = await web3Wrapper.getAvailableAddressesAsync();
         this.assert(!_.isEmpty(availableAddresses), 'No addresses were available on the provided web3 instance');
     },
+    hashAtMostOneUniqueValue(value: any[], errMsg: string): void {
+        this.assert(_.uniq(value).length <= 1, errMsg);
+    },
     isNumber(variableName: string, value: number): void {
         this.assert(_.isFinite(value), this.typeAssertionMessage(variableName, 'number', value));
     },
-- 
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