closes #6103

src/database/redis/hash.js

@@ -102,7 +102,7 @@ module.exports = function (redisClient, module) {
 
 	module.deleteObjectField = function (key, field, callback) {
 		callback = callback || function () {};
-		if (field === null) {
+		if (key === undefined || key === null || field === undefined || field === null) {
 			return setImmediate(callback);
 		}
 		redisClient.hdel(key, field, function (err) {

test/database/hash.js

@@ -330,6 +330,34 @@ describe('Hash methods', function () {
 				});
 			});
 		});
+
+		it('should not error if key is undefined', function (done) {
+			db.deleteObjectField(undefined, 'someField', function (err) {
+				assert.ifError(err);
+				done();
+			});
+		});
+
+		it('should not error if key is null', function (done) {
+			db.deleteObjectField(null, 'someField', function (err) {
+				assert.ifError(err);
+				done();
+			});
+		});
+
+		it('should not error if field is undefined', function (done) {
+			db.deleteObjectField('someKey', undefined, function (err) {
+				assert.ifError(err);
+				done();
+			});
+		});
+
+		it('should not error if field is null', function (done) {
+			db.deleteObjectField('someKey', null, function (err) {
+				assert.ifError(err);
+				done();
+			});
+		});
 	});
 
 	describe('incrObjectField()', function () {