Out of the box, tempest does not run cleanly, needs config file

While trying to run tempest against a running devstack, I was just doing:

$> nosestests storm

Out of the box, with a fresh git clone, this causes a bunch of errors like this:

======================================================================
ERROR: test suite for <class 'storm.tests.test_servers_negative.ServersNegativeTest'>
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/nose/suite.py", line 208, in run
    self.setUp()
  File "/usr/lib/pymodules/python2.7/nose/suite.py", line 291, in setUp
    self.setupContext(ancestor)
  File "/usr/lib/pymodules/python2.7/nose/suite.py", line 314, in setupContext
    try_run(context, names)
  File "/usr/lib/pymodules/python2.7/nose/util.py", line 478, in try_run
    return func()
  File "/home/stack/tempest/storm/tests/test_servers_negative.py", line 15, in setUpClass
    cls.os = openstack.Manager()
  File "/home/stack/tempest/storm/openstack.py", line 32, in __init__
    self.config.nova.auth_url)
  File "/home/stack/tempest/storm/services/nova/json/servers_client.py", line 12, in __init__
    auth_url, tenant_name)
  File "/home/stack/tempest/storm/common/rest_client.py", line 20, in __init__
    auth_url)
  File "/home/stack/tempest/storm/common/rest_client.py", line 32, in basic_auth
    resp, body = self.http_obj.request(auth_url, 'GET', **params)
  File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1288, in request
    (scheme, authority, request_uri, defrag_uri) = urlnorm(uri)
  File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 203, in urlnorm
    raise RelativeURIError("Only absolute URIs are allowed. uri = %s" % uri)
RelativeURIError: Only absolute URIs are allowed. uri = 127.0.0.1

Unfortunately, the RelativeURIError is hiding the real error: that there is no etc/storm.conf file in the /tempest/storm directory. And since there is no way to specify the config file path to use in testing, the storm.config.StormConfig class attempts to use defaults for a bunch of things, including a bad URI default (127.0.0.1 instead of http://127.0.0.1).

The solution is to modify the StormConfig and openstack.Manager classes to have a way of specifying a config file and also to raise a more appropriate error when a config file is not found or a default is incorrect.

Donald Ngo and myself both experienced this issue...