Mock base_url in the tests for now

Author: jtpio

nbresuse/tests/test_basic.py

@@ -25,7 +25,7 @@ def test_import_serverextension(self):
 
         # mock a notebook app
         nbapp_mock = MagicMock()
-        nbapp_mock.web_app.settings = {}
+        nbapp_mock.web_app.settings = {"base_url": ""}
 
         # mock these out for unit test
         with patch("tornado.ioloop.PeriodicCallback") as periodic_callback_mock, patch(