diff --git a/tests/utests/chameleon/protoc_plugins/swagger_template_test.py b/tests/utests/chameleon/protoc_plugins/swagger_template_test.py
index 1344430..577d070 100644
--- a/tests/utests/chameleon/protoc_plugins/swagger_template_test.py
+++ b/tests/utests/chameleon/protoc_plugins/swagger_template_test.py
@@ -16,6 +16,7 @@
 import json
 import os
 from unittest import TestCase
+from mock import Mock
 
 from chameleon.protoc_plugins.descriptor_parser import DescriptorParser
 from chameleon.protoc_plugins.swagger_template \
@@ -38,6 +39,22 @@
         swagger = native_descriptors_to_swagger(native_data)
         return swagger
 
+    def test_swagger_url(self):
+
+        grpc = {
+            '_channel': {
+                '_Rendezvous': {}
+            }
+        }
+        from chameleon.web_server.web_server import WebServer
+        server = yield WebServer(9101, '/', '/swagger', grpc)
+        server.app = 'app'
+
+        server.add_swagger_routes = Mock()
+
+        self.assertEqual(server.add_swagger_routes.call_count, 1)
+        server.add_swagger_routes.assert_called_once_with('app', '/swagger')
+
     def test_empty_def(self):
 
         proto = unindent("""