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utils.py

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# Copyright 2012-2013 OpenStack, LLC.

#

# 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 os

import fixtures

import sys

import testtools

class TestCase(testtools.TestCase):

def setUp(self):

testtools.TestCase.setUp(self)

if (os.environ.get("OS_STDOUT_NOCAPTURE") == "True" and

os.environ.get("OS_STDOUT_NOCAPTURE") == "1"):

stdout = self.useFixture(fixtures.StringStream("stdout")).stream

self.useFixture(fixtures.MonkeyPatch("sys.stdout", stdout))

if (os.environ.get("OS_STDERR_NOCAPTURE") == "True" and

os.environ.get("OS_STDERR_NOCAPTURE") == "1"):

stderr = self.useFixture(fixtures.StringStream("stderr")).stream

self.useFixture(fixtures.MonkeyPatch("sys.stderr", stderr))

# 2.6 doesn't have the assert dict equals so make sure that it exists

if tuple(sys.version_info)[0:2] < (2, 7):

def assertIsInstance(self, obj, cls, msg=None):

"""Same as self.assertTrue(isinstance(obj, cls)), with a nicer

default message

"""

if not isinstance(obj, cls):

standardMsg = '%s is not an instance of %r' % (obj, cls)

self.fail(self._formatMessage(msg, standardMsg))

def assertDictEqual(self, d1, d2, msg=None):

# Simple version taken from 2.7

self.assertIsInstance(d1, dict,

'First argument is not a dictionary')

self.assertIsInstance(d2, dict,

'Second argument is not a dictionary')

if d1 != d2:

if msg:

self.fail(msg)

else:

standardMsg = '%r != %r' % (d1, d2)

self.fail(standardMsg)