Dont raise exception when empty params passed to HERE geocoder

server/lib/python/cartodb_services/cartodb_services/here/geocoder.py

@@ -70,7 +70,7 @@ class HereMapsGeocoder(Traceable):
             if value:
                 params[key] = value
         if not params:
-            raise NoGeocodingParams()
+            return []
         return self._execute_geocode(params)
 
     def _execute_geocode(self, params):

server/lib/python/cartodb_services/test/test_heremapsgeocoder.py

@@ -128,8 +128,8 @@ class HereMapsGeocoderTestCase(unittest.TestCase):
     def test_geocode_address_with_no_params(self, req_mock):
         req_mock.register_uri('GET', HereMapsGeocoder.PRODUCTION_GEOCODE_JSON_URL,
                        text=self.GOOD_RESPONSE)
-        with self.assertRaises(NoGeocodingParams):
-            self.geocoder.geocode()
+        result = self.geocoder.geocode()
+        self.assertEqual(result, [])
 
     def test_geocode_address_empty_response(self, req_mock):
         req_mock.register_uri('GET', HereMapsGeocoder.PRODUCTION_GEOCODE_JSON_URL,