tests: use oslo_config.fixture in the unit tests

We need to use the config fixture in order to deal properly with unit
tests and configuration flags.

Author: alvarolopez

deepaas/tests/base.py

@@ -18,9 +18,13 @@
 
 import fixtures
 from oslo_config import cfg
+from oslo_config import fixture as config_fixture
+from oslo_log import log as logging
 import testtools
 
 CONF = cfg.CONF
+logging.register_options(CONF)
+
 
 _TRUE_VALUES = ('True', 'true', '1', 'yes')
 
@@ -42,6 +46,8 @@ def setUp(self):
         if test_timeout > 0:
             self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
 
+        self.useFixture(config_fixture.Config(CONF))
+
         if os.environ.get('TESTR_STDOUT_CAPTURE') in _TRUE_VALUES:
             stdout = self.useFixture(fixtures.StringStream('stdout')).stream
             self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))