From 0dca86f255440e28d01c8fdd5c64fd1490c2f031 Mon Sep 17 00:00:00 2001
From: barisusakli <barisusakli@gmail.com>
Date: Wed, 18 Feb 2015 07:36:49 -0500
Subject: [PATCH] fix tests

---
 src/database/mongo/hash.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/database/mongo/hash.js b/src/database/mongo/hash.js
index 5c5970f1d9..800bd6525c 100644
--- a/src/database/mongo/hash.js
+++ b/src/database/mongo/hash.js
@@ -210,8 +210,10 @@ module.exports = function(db, module) {
 		}
 		var data = {};
 		fields.forEach(function(field) {
-			field = helpers.fieldToString(field);
-			data[field] = '';
+			if (field) {
+				field = helpers.fieldToString(field);
+				data[field] = '';
+			}
 		});
 
 		db.collection('objects').update({_key: key}, {$unset : data}, function(err, res) {