8d6eb36779
Following OpenStack Style Guidelines: [1] http://docs.openstack.org/developer/hacking/#unit-tests-and-assertraises [H203] Unit test assertions tend to give better messages for more specific assertions. As a result, assertIsNone(...) is preferred over assertEqual(None, ...) and assertIs(..., None) Change-Id: I5b5900c509956cf13ec3d1f2105fc7c89531f22a