From 6b13cc5275df53c765c450d570521c425c3345d9 Mon Sep 17 00:00:00 2001
From: Ihar Hrachyshka <ihrachys@redhat.com>
Date: Tue, 9 Jun 2015 10:57:29 +0200
Subject: [PATCH] Enable all deprecation warnings for test runs

We would like to catch all deprecation warnings during test runs to be
notified in advance about potential problems with next library releases
we depend on.

Change-Id: I876d8c4de88618b01898ab537a44920789d8178e
---
 neutron/tests/base.py  |  4 ++++
 neutron/tests/tools.py | 17 +++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/neutron/tests/base.py b/neutron/tests/base.py
index 7b1890104..a9cf779ee 100644
--- a/neutron/tests/base.py
+++ b/neutron/tests/base.py
@@ -45,6 +45,7 @@ from neutron import manager
 from neutron import policy
 from neutron.tests import fake_notifier
 from neutron.tests import post_mortem_debug
+from neutron.tests import tools
 
 
 CONF = cfg.CONF
@@ -126,6 +127,9 @@ class DietTestCase(testtools.TestCase):
             self.addOnException(post_mortem_debug.get_exception_handler(
                 debugger))
 
+        # Make sure we see all relevant deprecation warnings when running tests
+        self.useFixture(tools.WarningsFixture())
+
         if bool_from_env('OS_DEBUG'):
             _level = std_logging.DEBUG
         else:
diff --git a/neutron/tests/tools.py b/neutron/tests/tools.py
index fd53793fe..40c308d59 100644
--- a/neutron/tests/tools.py
+++ b/neutron/tests/tools.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import warnings
+
 import fixtures
 import six
 
@@ -49,6 +51,21 @@ class AttributeMapMemento(fixtures.Fixture):
         attributes.RESOURCE_ATTRIBUTE_MAP = self.contents_backup
 
 
+class WarningsFixture(fixtures.Fixture):
+    """Filters out warnings during test runs."""
+
+    warning_types = (
+        DeprecationWarning, PendingDeprecationWarning, ImportWarning
+    )
+
+    def setUp(self):
+        super(WarningsFixture, self).setUp()
+        for wtype in self.warning_types:
+            warnings.filterwarnings(
+                "always", category=wtype, module='^neutron\\.')
+        self.addCleanup(warnings.resetwarnings)
+
+
 """setup_mock_calls and verify_mock_calls are convenient methods
 to setup a sequence of mock calls.
 
-- 
2.45.2