tests: Enable warnings

Add the warnings fixture so we can catch deprecation warnings earlier.

Change-Id: I37a349237470beb60240d0b6c208aa75f2a075ac
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>

barbican/tests/database_utils.py

@@ -275,8 +275,9 @@ class RepositoryTestCase(oslotest.BaseTestCase):
     hard to debug 'Broken Pipe' errors could result!
     """
     def setUp(self):
-        super(RepositoryTestCase, self).setUp()
+        super().setUp()
         self.useFixture(barbican_fixture.StandardLogging())
+        self.useFixture(barbican_fixture.WarningsFixture())
         setup_in_memory_db()
 
         # Clean up once tests are completed.

barbican/tests/fixture.py

@@ -12,6 +12,7 @@
 
 import logging as std_logging
 import os
+import warnings
 
 import fixtures
 from oslo_db.sqlalchemy import session
@@ -162,3 +163,19 @@ class StandardLogging(fixtures.Fixture):
 
         self.useFixture(
             fixtures.MonkeyPatch('oslo_log.log.setup', fake_logging_setup))
+
+
+class WarningsFixture(fixtures.Fixture):
+    """Filters out warnings during test runs."""
+
+    def setUp(self):
+        super().setUp()
+
+        self._original_warning_filters = warnings.filters[:]
+
+        warnings.simplefilter('once', DeprecationWarning)
+
+        self.addCleanup(self._reset_warning_filters)
+
+    def _reset_warning_filters(self):
+        warnings.filters[:] = self._original_warning_filters

barbican/tests/utils.py

@@ -73,8 +73,9 @@ class BarbicanAPIBaseTestCase(oslotest.BaseTestCase):
         return context
 
     def setUp(self):
-        super(BarbicanAPIBaseTestCase, self).setUp()
+        super().setUp()
         self.useFixture(barbican_fixture.StandardLogging())
+        self.useFixture(barbican_fixture.WarningsFixture())
         # Make sure we have a test db and session to work with
         database_utils.setup_in_memory_db()
 
@@ -94,22 +95,23 @@ class BarbicanAPIBaseTestCase(oslotest.BaseTestCase):
 
     def tearDown(self):
         database_utils.in_memory_cleanup()
-        super(BarbicanAPIBaseTestCase, self).tearDown()
+        super().tearDown()
 
 
 class BaseTestCase(oslotest.BaseTestCase):
     def setUp(self):
-        super(BaseTestCase, self).setUp()
+        super().setUp()
         self.useFixture(barbican_fixture.StandardLogging())
+        self.useFixture(barbican_fixture.WarningsFixture())
         self.order_id = 'order1234'
         self.external_project_id = 'keystone1234'
         self.request_id = 'request1234'
 
     def tearDown(self):
-        super(BaseTestCase, self).tearDown()
         ss_conf = config.get_module_config('secretstore')
         ss_conf.clear_override("enable_multiple_secret_stores",
                                group='secretstore')
+        super().tearDown()
 
 
 class MockModelRepositoryMixin(object):

functionaltests/api/base.py

@@ -22,6 +22,7 @@ from oslo_utils import uuidutils
 import oslotest.base as oslotest
 from testtools import testcase
 
+from barbican.tests import fixture as barbican_fixture
 from barbican.tests import utils
 from functionaltests.common import client
 from functionaltests.common import config
@@ -48,11 +49,11 @@ class TestCase(oslotest.BaseTestCase):
     @classmethod
     def setUpClass(cls):
         cls.LOG = logging.getLogger(cls._get_full_case_name())
-        super(TestCase, cls).setUpClass()
+        super().setUpClass()
 
     def setUp(self):
         self.LOG.info('Starting: %s', self._testMethodName)
-        super(TestCase, self).setUp()
+        super().setUp()
 
         self.client = client.BarbicanClient()
 
@@ -74,8 +75,10 @@ class TestCase(oslotest.BaseTestCase):
                                                    format=self.log_format,
                                                    level=logging.DEBUG))
 
+        self.useFixture(barbican_fixture.WarningsFixture())
+
     def tearDown(self):
-        super(TestCase, self).tearDown()
+        super().tearDown()
         self.LOG.info('Finished: %s\n', self._testMethodName)
 
     @classmethod