Can't run quantum.tests.unit.test_dhcp_agent.TestDhcpAgentEventHandler solely

[Alexej Ababilov]

TestDhcpAgentEventHandler tests cannot be run independently making difficult to use testr (that runs tests in parallel in an unpredictable order):

$ nosetests quantum.tests.unit.test_dhcp_agent:TestDhcpAgentEventHandler
quantum.tests.unit.test_dhcp_agent.TestDhcpAgentEventHandler.test_disable_dhcp_helper_driver_failure ... ERROR
quantum.tests.unit.test_dhcp_agent.TestDhcpAgentEventHandler.test_disable_dhcp_helper_known_network ... ERROR
quantum.tests.unit.test_dhcp_agent.TestDhcpAgentEventHandler.test_disable_dhcp_helper_unknown_network ... ERROR
quantum.tests.unit.test_dhcp_agent.TestDhcpAgentEventHandler.test_disable_isolated_metadata_proxy ... ERROR

...

======================================================================
ERROR: quantum.tests.unit.test_dhcp_agent.TestDhcpAgentEventHandler.test_disable_dhcp_helper_driver_failure
----------------------------------------------------------------------
_StringException: Empty attachments:
  pythonlogging:''
  stderr
  stdout

Traceback (most recent call last):
  File "/tmp/quantum/quantum/tests/unit/test_dhcp_agent.py", line 426, in setUp
    self.dhcp = dhcp_agent.DhcpAgent(HOSTNAME)
  File "/tmp/quantum/quantum/agent/dhcp_agent.py", line 82, in __init__
    self._populate_networks_cache()
  File "/tmp/quantum/quantum/agent/dhcp_agent.py", line 90, in _populate_networks_cache
    self.root_helper
  File "/tmp/quantum/quantum/agent/linux/dhcp.py", line 228, in existing_dhcp_networks
    confs_dir = os.path.abspath(os.path.normpath(conf.dhcp_confs))
  File "/tmp/.venv/lib/python2.6/site-packages/oslo/config/cfg.py", line 1191, in __getattr__
    return self._get(name)
  File "/tmp/.venv/lib/python2.6/site-packages/oslo/config/cfg.py", line 1513, in _get
    value = self._substitute(self._do_get(name, group))
  File "/tmp/.venv/lib/python2.6/site-packages/oslo/config/cfg.py", line 1529, in _do_get
    info = self._get_opt_info(name, group)
  File "/tmp/.venv/lib/python2.6/site-packages/oslo/config/cfg.py", line 1629, in _get_opt_info
    raise NoSuchOptError(opt_name, group)
NoSuchOptError: no such option: dhcp_confs

These tests require importing an option from quantum.agent.linux.dhcp module.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/24652

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/24652
Committed: http://github.com/openstack/quantum/commit/37ad346a7da82575e5d6cdd3b90317fc50700957
Submitter: Jenkins
Branch: master

commit 37ad346a7da82575e5d6cdd3b90317fc50700957
Author: Alessio Ababilov <email address hidden>
Date: Mon Mar 18 18:48:30 2013 +0200

    Allow tests in TestDhcpAgentEventHandler run independently

    Tests in TestDhcpAgentEventHandler depend on dhcp_confs
    option that is defined in quantum.agent.linux.dhcp. We have
    to register the option in order to allow independent testing.

    This problem is similar to bug #1125951.

    Fixes: bug #1156696

    Change-Id: I323908c6f70697e056294b1817ff32ce5d32b32c