From 39069795de683aabf13662085a26874d73bb2154 Mon Sep 17 00:00:00 2001
From: Alexander Gorodnev <agorodnev@mirantis.com>
Date: Fri, 2 Aug 2013 08:14:16 -0400
Subject: Add a fixture for dealing with config

Many tests change config's variables directly in CONF object. This
fixture allows to override the values in more convenient way and
restores config after test completion.

Blueprint: common-unit-tests
Change-Id: I5535c534425278d8804ca9fe84846e15ac898db0
---
 openstack/common/fixture/config.py | 45 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 openstack/common/fixture/config.py

(limited to 'openstack/common')

diff --git a/openstack/common/fixture/config.py b/openstack/common/fixture/config.py
new file mode 100644
index 0000000..cf52a66
--- /dev/null
+++ b/openstack/common/fixture/config.py
@@ -0,0 +1,45 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+#
+# Copyright 2013 Mirantis, Inc.
+# Copyright 2013 OpenStack Foundation
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+import fixtures
+from oslo.config import cfg
+
+
+class Config(fixtures.Fixture):
+    """Override some configuration values.
+
+    The keyword arguments are the names of configuration options to
+    override and their values.
+
+    If a group argument is supplied, the overrides are applied to
+    the specified configuration option group.
+
+    All overrides are automatically cleared at the end of the current
+    test by the reset() method, which is registred by addCleanup().
+    """
+
+    def __init__(self, conf=cfg.CONF):
+        self.conf = conf
+
+    def setUp(self):
+        super(Config, self).setUp()
+        self.addCleanup(self.conf.reset)
+
+    def config(self, **kw):
+        group = kw.pop('group', None)
+        for k, v in kw.iteritems():
+            self.conf.set_override(k, v, group)
-- 
cgit