Need to investigate the root cause that we need to change log level to suppress annoying message in unit tests

[Akihiro Motoki]

bug 1358120 and https://review.openstack.org/#/c/115368/ suppress the annoying message during the unit tests, but we need to investigate the root cause we need to change the log level to support annoying messages.

The following tests need to be investigated.

- openstack_dashboard/dashboards/project/databases/tests.py
  test_launch_instance_exception_on_flavors
- openstack_dashboard/dashboards/identity/projects/tests.p
  test_update_project_when_default_role_does_not_exist

In both tests, we are using logger.setLevel(logging.CRITICAL) or logging.disable(logging.ERROR).

[Akihiro Motoki (amotoki)]

I tried to investigated the cause but cannot identify it so far.
The easiest way to show the detail error message is to remove setLevel or logging.disable sentences.

These tests also fail with Django 1.7 RC as Thomas reported in the dev ML for Debian Jessie.
I believe the root cause is same.
To test Django 1.7, please refer to https://www.djangoproject.com/download/

[David Lyle (david-lyle)]

The root cause seems to be throwing in memoized methods is not handled well. Better exception handling when making the api calls should resolve the issue.