Building Dashboard Tutorial test fails

After doing this tutorial "Tutorial: Building a Dashboard using Horizon" (http://docs.openstack.org/developer/horizon/topics/tutorial.html), user may try to run tests. The boilerplate test seems to fail.

After running through the tutorial, tests should run clean, but "test_me" in openstack_dashboard/dashboards/mydashboard/mypanel/tests.py fails:

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ERROR: test_me (openstack_dashboard.dashboards.mydashboard.mypanel.tests.MypanelTests)
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Traceback (most recent call last):
  File "/home/stack/horizon/horizon/test/helpers.py", line 133, in setUp
    self._setup_user()
  File "/home/stack/horizon/horizon/test/helpers.py", line 147, in _setup_user
    self.assertTrue(self.client.login(username="test", password="test"))
  File "/home/stack/horizon/.venv/local/lib/python2.7/site-packages/django/test/client.py", line 554, in login
    user = authenticate(**credentials)
  File "/home/stack/horizon/.venv/local/lib/python2.7/site-packages/django/contrib/auth/__init__.py", line 60, in authenticate
    user = backend.authenticate(**credentials)
  File "/home/stack/horizon/.venv/local/lib/python2.7/site-packages/openstack_auth/backend.py", line 120, in authenticate
    raise exceptions.KeystoneAuthException(msg)
KeystoneAuthException: <django.utils.functional.__proxy__ object at 0x17d00590>