def setUp(self):
"""Run before each test method to initialize test environment."""
super(TestCase, self).setUp()
test_timeout = os.environ.get('OS_TEST_TIMEOUT', 0)
try:
test_timeout = int(test_timeout)
except ValueError:
# If timeout value is invalid do not set a timeout.
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.TempHomeDir())
if os.environ.get('OS_STDOUT_CAPTURE') in _TRUE_VALUES:
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if os.environ.get('OS_STDERR_CAPTURE') in _TRUE_VALUES:
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
self.log_fixture = self.useFixture(fixtures.FakeLogger())
if self.REQUIRES_LOCKING:
lock_path = self.useFixture(fixtures.TempDir()).path
self.fixture = self.useFixture(
config_fixture.Config(lockutils.CONF))
self.fixture.config(lock_path=lock_path)
def setUp(self):
"""Run before each test method to initialize test environment."""
super(TestCase, self).setUp()
self.stubs = stubout.StubOutForTesting()
def test_numbered_nics():
return {}
self.stubs.Set(objects, '_numbered_nics', test_numbered_nics)
test_timeout = os.environ.get('OS_TEST_TIMEOUT', 0)
try:
test_timeout = int(test_timeout)
except ValueError:
# If timeout value is invalid do not set a timeout.
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.TempHomeDir())
if os.environ.get('OS_STDOUT_CAPTURE') in _TRUE_VALUES:
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if os.environ.get('OS_STDERR_CAPTURE') in _TRUE_VALUES:
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
self.log_fixture = self.useFixture(fixtures.FakeLogger())
def setUp(self):
"""Run before each test method to initialize test environment."""
super(TestCase, self).setUp()
test_timeout = os.environ.get('OS_TEST_TIMEOUT', 60)
try:
test_timeout = int(test_timeout)
except ValueError:
# If timeout value is invalid, set a default timeout.
test_timeout = 60
if test_timeout <= 0:
test_timeout = 60
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.TempHomeDir())
if os.environ.get('OS_STDOUT_CAPTURE') in _TRUE_VALUES:
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if os.environ.get('OS_STDERR_CAPTURE') in _TRUE_VALUES:
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
self.log_fixture = self.useFixture(fixtures.FakeLogger())
def setUp(self):
super(BaseTestCase, self).setUp()
test_timeout = os.environ.get('OS_TEST_TIMEOUT', 30)
try:
test_timeout = int(test_timeout)
except ValueError:
# If timeout value is invalid, fail hard.
print("OS_TEST_TIMEOUT set to invalid value"
" defaulting to no timeout")
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
if os.environ.get('OS_STDOUT_CAPTURE') in packaging.TRUE_VALUES:
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if os.environ.get('OS_STDERR_CAPTURE') in packaging.TRUE_VALUES:
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
self.log_fixture = self.useFixture(
fixtures.FakeLogger('pbr'))
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.FakeLogger())
self.useFixture(fixtures.EnvironmentVariable('PBR_VERSION', '0.0'))
self.temp_dir = self.useFixture(fixtures.TempDir()).path
self.package_dir = os.path.join(self.temp_dir, 'testpackage')
shutil.copytree(os.path.join(os.path.dirname(__file__), 'testpackage'),
self.package_dir)
self.addCleanup(os.chdir, os.getcwd())
os.chdir(self.package_dir)
def setUp(self):
super(KeystoneTest, self).setUp()
self.addCleanup(cfg.CONF.reset)
collect.setup_conf()
self.useFixture(fixtures.NestedTempfile())
self.cachedir = tempfile.mkdtemp()
cfg.CONF.set_override('cache_dir', self.cachedir, group='keystone')
def setUp(self):
"""Run before each test method to initialize test environment."""
super(TestCase, self).setUp()
self.mox = mox.Mox()
self.setup_config()
self.addCleanup(cfg.CONF.reset)
config.setup_logging()
test_timeout = os.environ.get('OS_TEST_TIMEOUT', 0)
try:
test_timeout = int(test_timeout)
except ValueError:
# If timeout value is invalid do not set a timeout.
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.TempHomeDir())
self.addCleanup(mock.patch.stopall)
if os.environ.get('OS_STDOUT_CAPTURE') in _TRUE_VALUES:
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if os.environ.get('OS_STDERR_CAPTURE') in _TRUE_VALUES:
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
self.log_fixture = self.useFixture(fixtures.FakeLogger())
self.policy = self.useFixture(policy_fixture.PolicyFixture())
# cage is a singleton so we delete it here and
# recreate it after each test
self.addCleanup(d6cage.delete_cage)
def setUp(self):
"""Run before each test method to initialize test environment."""
super(TestCase, self).setUp()
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.TempHomeDir())
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))
self.log_fixture = self.useFixture(fixtures.FakeLogger('nova'))
self.useFixture(conf_fixture.ConfFixture(CONF))
global _DB_CACHE
if not _DB_CACHE:
_DB_CACHE = Database()
self.useFixture(_DB_CACHE)
mox_fixture = self.useFixture(MoxStubout())
self.mox = mox_fixture.mox
self.stubs = mox_fixture.stubs
self.addCleanup(self._clear_attrs)
self.useFixture(fixtures.EnvironmentVariable('http_proxy'))
self.policy = self.useFixture(policy_fixture.PolicyFixture())
def setUp(self):
"""Run before each test method to initialize test environment."""
super(TestCase, self).setUp()
test_timeout = os.environ.get('OS_TEST_TIMEOUT', 0)
try:
test_timeout = int(test_timeout)
except ValueError:
# If timeout value is invalid do not set a timeout.
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.TempHomeDir())
environ_enabled = (lambda var_name: strutils.bool_from_string(
os.environ.get(var_name)))
if environ_enabled('OS_STDOUT_CAPTURE'):
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if environ_enabled('OS_STDERR_CAPTURE'):
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
if environ_enabled('OS_LOG_CAPTURE'):
log_format = '%(levelname)s [%(name)s] %(message)s'
if environ_enabled('OS_DEBUG'):
level = logging.DEBUG
else:
level = logging.INFO
self.useFixture(
fixtures.LoggerFixture(nuke_handlers=False,
format=log_format,
level=level))
def setUp(self):
"""Run before each test method to initialize test environment."""
super(TestCase, self).setUp()
self.mock_helm_refresh = self.helm_refresh_patcher.start()
self.dbapi = dbapi.get_instance()
test_timeout = os.environ.get('OS_TEST_TIMEOUT', 0)
try:
test_timeout = int(test_timeout)
except ValueError:
# If timeout value is invalid do not set a timeout.
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.TempHomeDir())
if (os.environ.get('OS_STDOUT_CAPTURE') == 'True'
or os.environ.get('OS_STDOUT_CAPTURE') == '1'):
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if (os.environ.get('OS_STDERR_CAPTURE') == 'True'
or os.environ.get('OS_STDERR_CAPTURE') == '1'):
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
self.log_fixture = self.useFixture(fixtures.FakeLogger())
def fake_logging_setup(*args):
pass
self.useFixture(
fixtures.MonkeyPatch('oslo_log.log.setup', fake_logging_setup))
logging.register_options(CONF)
self.useFixture(conf_fixture.ConfFixture(CONF))
global _DB_CACHE
if not _DB_CACHE:
engine = enginefacade.get_legacy_facade().get_engine()
_DB_CACHE = Database(engine,
migration,
sql_connection=CONF.database.connection,
sqlite_db='sysinv.sqlite',
sqlite_clean_db='clean.sqlite')
self.useFixture(_DB_CACHE)
# NOTE(danms): Make sure to reset us back to non-remote objects
# for each test to avoid interactions. Also, backup the object
# registry
objects_base.SysinvObject.indirection_api = None
self._base_test_obj_backup = copy.copy(
objects_base.SysinvObject._obj_classes)
self.addCleanup(self._restore_obj_registry)
self.addCleanup(self._clear_attrs)
self.useFixture(fixtures.EnvironmentVariable('http_proxy'))
self.policy = self.useFixture(policy_fixture.PolicyFixture())
CONF.set_override('fatal_exception_format_errors', True)
def make(self, dependency_resources):
self.nt = fixtures.NestedTempfile()
self.nt.setUp()
self.testhome = fixtures.TempHomeDir()
self.testhome.setUp()
self.path = os.path.join(self.testhome.path, '.dstat')
subprocess.check_call(['install-dstat-plugins', self.path])
def setUp(self):
"""Run before each test method to initialize test environment."""
super(TestCase, self).setUp()
test_timeout = int(os.environ.get('OS_TEST_TIMEOUT', 0))
try:
test_timeout = int(test_timeout * self.TIMEOUT_SCALING_FACTOR)
except ValueError:
# If timeout value is invalid do not set a timeout.
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.TempHomeDir())
if os.environ.get('OS_STDOUT_CAPTURE') in _TRUE_VALUES:
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if os.environ.get('OS_STDERR_CAPTURE') in _TRUE_VALUES:
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
shade.simple_logging(debug=True)
self.log_fixture = self.useFixture(fixtures.FakeLogger())
def setUp(self):
super(TestMain, self).setUp()
self.useFixture(fixtures.NestedTempfile())
td = self.useFixture(fixtures.TempDir())
self.useFixture(
fixtures.EnvironmentVariable("OS_REFRESH_CONFIG_BASE_DIR",
td.path))
def setUp(self):
"""Run before each test method to initialize test environment."""
super(TestCase, self).setUp()
test_timeout = os.environ.get('OS_TEST_TIMEOUT', 0)
try:
test_timeout = int(test_timeout)
except ValueError:
# If timeout value is invalid do not set a timeout.
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.TempHomeDir())
if os.environ.get('OS_STDOUT_CAPTURE') in _TRUE_VALUES:
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if os.environ.get('OS_STDERR_CAPTURE') in _TRUE_VALUES:
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
self.log_fixture = self.useFixture(
fixtures.FakeLogger(level=logging.DEBUG))
self.statsd = FakeStatsd()
os.environ['STATSD_HOST'] = '127.0.0.1'
os.environ['STATSD_PORT'] = str(self.statsd.port)
self.statsd.start()
def setUp(self, conf=cfg.CONF):
super(BaseTestCase, self).setUp()
moxfixture = self.useFixture(moxstubout.MoxStubout())
self.mox = moxfixture.mox
self.stubs = moxfixture.stubs
self.conf = conf
self.addCleanup(self.conf.reset)
self.useFixture(fixtures.FakeLogger('openstack.common'))
test_timeout = os.environ.get('OS_TEST_TIMEOUT', 0)
try:
test_timeout = int(test_timeout)
except ValueError:
# If timeout value is invalid do not set a timeout.
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
if (os.environ.get('OS_STDOUT_CAPTURE') == 'True' or
os.environ.get('OS_STDOUT_CAPTURE') == '1'):
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if (os.environ.get('OS_STDERR_CAPTURE') == 'True' or
os.environ.get('OS_STDERR_CAPTURE') == '1'):
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
self.useFixture(fixtures.NestedTempfile())
self.tempdirs = []
def setUp(self):
"""Run before each test method to initialize test environment."""
super(TestCase, self).setUp()
self.stubbed_mapped_nics = {}
def dummy_mapped_nics(nic_mapping=None):
return self.stubbed_mapped_nics
if self.stub_mapped_nics:
self.stub_out('os_net_config.objects.mapped_nics',
dummy_mapped_nics)
test_timeout = os.environ.get('OS_TEST_TIMEOUT', 0)
try:
test_timeout = int(test_timeout)
except ValueError:
# If timeout value is invalid do not set a timeout.
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.TempHomeDir())
if os.environ.get('OS_STDOUT_CAPTURE') in _TRUE_VALUES:
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if os.environ.get('OS_STDERR_CAPTURE') in _TRUE_VALUES:
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
self.log_fixture = self.useFixture(fixtures.FakeLogger())
def setUp(self):
"""Run before each test method to initialize test environment."""
super(TestCase, self).setUp()
test_timeout = os.environ.get('OS_TEST_TIMEOUT', 0)
try:
test_timeout = int(test_timeout)
except ValueError:
# If timeout value is invalid do not set a timeout.
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.TempHomeDir())
if os.environ.get('OS_STDOUT_CAPTURE') in _TRUE_VALUES:
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if os.environ.get('OS_STDERR_CAPTURE') in _TRUE_VALUES:
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
self.log_fixture = self.useFixture(fixtures.FakeLogger())
self.samples_directory = 'samples'
self.wsgi_config_file = samples_path('samples') + 'wsgi.conf'
def setUp(self):
super(TestCmd, self).setUp()
self.assertTrue(os.path.exists(script_path))
self.useFixture(fixtures.NestedTempfile())
self.base_dir = self.useFixture(fixtures.TempDir())
self.lockdir = self.useFixture(fixtures.TempDir())
self.lockfile = os.path.join(self.lockdir.path, 'lock')
def setUp(self):
super(BaseTestCase, self).setUp()
self.useFixture(
fixtures.FakeLogger(
format="%(asctime)s %(levelname)8s [%(name)s] %(message)s"))
test_timeout = int(os.environ.get('OS_TEST_TIMEOUT', 0))
if test_timeout == -1:
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
# If someone does use tempfile directly, ensure that it's cleaned up
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.TempHomeDir())
self.addCleanup(CONF.reset)
if os.environ.get('OS_STDOUT_NOCAPTURE') not in TRUE_STRING:
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if os.environ.get('OS_STDERR_NOCAPTURE') not in TRUE_STRING:
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
def setUp(self):
super(BaseTestCase, self).setUp()
if os.environ.get('OS_DEBUG') in TRUE_STRING:
_level = logging.DEBUG
else:
_level = logging.INFO
self.useFixture(fixtures.FakeLogger(format=LOG_FORMAT, level=_level))
test_timeout = int(os.environ.get('OS_TEST_TIMEOUT', 0))
if test_timeout == -1:
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
# If someone does use tempfile directly, ensure that it's cleaned up
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.TempHomeDir())
self.addCleanup(CONF.reset)
if os.environ.get('OS_STDOUT_CAPTURE') in TRUE_STRING:
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if os.environ.get('OS_STDERR_CAPTURE') in TRUE_STRING:
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
self.stubs = stubout.StubOutForTesting()
self.stubs.Set(exception, '_FATAL_EXCEPTION_FORMAT_ERRORS', True)
def setUp(self):
super(TestCase, self).setUp()
self.useFixture(fixtures.NestedTempfile())
conf = copy.deepcopy(USER_CONF)
tdir = self.useFixture(fixtures.TempDir())
conf['cache']['path'] = tdir.path
self.cloud_yaml = _write_yaml(conf)
self.secure_yaml = _write_yaml(SECURE_CONF)
self.vendor_yaml = _write_yaml(VENDOR_CONF)
self.no_yaml = _write_yaml(NO_CONF)
self.useFixture(
fixtures.MonkeyPatch('os_client_config.__version__', '1.2.3'))
self.useFixture(
fixtures.MonkeyPatch('openstack.version.__version__', '3.4.5'))
# Isolate the test runs from the environment
# Do this as two loops because you can't modify the dict in a loop
# over the dict in 3.4
keys_to_isolate = []
for env in os.environ.keys():
if env.startswith('OS_'):
keys_to_isolate.append(env)
for env in keys_to_isolate:
self.useFixture(fixtures.EnvironmentVariable(env))
def setUp(self):
super(TestEncryption, self).setUp()
self.private, self.public = encryption.generate_rsa_keypair()
# Because we set delete to False when using NamedTemporaryFile below
# we need to stick our usage of temporary files in the NestedTempfile
# fixture ensuring everything gets cleaned up when it is done.
self.useFixture(fixtures.NestedTempfile())
def setUp(self):
"""Run before each test method to initialize test environment."""
super(TestCase, self).setUp()
test_timeout = os.environ.get('OS_TEST_TIMEOUT', 0)
try:
test_timeout = int(test_timeout)
except ValueError:
# If timeout value is invalid do not set a timeout.
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
env_test_db = os.environ.get('STORYBOARD_TEST_DB')
if env_test_db is not None:
self.test_connection = env_test_db
else:
self.test_connection = ("mysql+pymysql://openstack_citest:"
"[email protected]:3306")
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.TempHomeDir())
self.useFixture(lockutils_fixture.ExternalLockFixture())
self.addCleanup(CONF.reset)
if os.environ.get('OS_STDOUT_CAPTURE') in _TRUE_VALUES:
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if os.environ.get('OS_STDERR_CAPTURE') in _TRUE_VALUES:
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
self.log_fixture = self.useFixture(fixtures.FakeLogger())
def setUp(self):
"""Run before each test method to initialize test environment."""
super(TestCase, self).setUp()
test_timeout = os.environ.get('OS_TEST_TIMEOUT', 0)
try:
test_timeout = int(test_timeout)
except ValueError:
# If timeout value is invalid do not set a timeout.
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.TempHomeDir())
environ_enabled = (lambda var_name: strutils.bool_from_string(
os.environ.get(var_name)))
if environ_enabled('OS_STDOUT_CAPTURE'):
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if environ_enabled('OS_STDERR_CAPTURE'):
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
self.start = timeutils.utcnow()
