OpenStack Networking (Neutron)
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# 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 functools
import unittest
from neutron_lib import constants as n_const
import testtools.testcase
from neutron.common import utils
from neutron.tests import base
from neutron.tests import tools
def create_resource(prefix, creation_func, *args, **kwargs):
"""Create a new resource that does not already exist.
If prefix isn't 'max_length' in size, a random suffix is concatenated to
ensure it is random. Otherwise, 'prefix' is used as is.
:param prefix: The prefix for a randomly generated name
:param creation_func: A function taking the name of the resource
to be created as it's first argument. An error is assumed
to indicate a name collision.
:param *args *kwargs: These will be passed to the create function.
"""
# Don't generate a random name if prefix is already full-length.
if len(prefix) == n_const.DEVICE_NAME_MAX_LEN:
return creation_func(prefix, *args, **kwargs)
while True:
name = utils.get_rand_name(
max_length=n_const.DEVICE_NAME_MAX_LEN,
prefix=prefix)
try:
return creation_func(name, *args, **kwargs)
except RuntimeError:
pass
def no_skip_on_missing_deps(wrapped):
"""Do not allow a method/test to skip on missing dependencies.
This decorator raises an error if a skip is raised by wrapped method when
OS_FAIL_ON_MISSING_DEPS is evaluated to True. This decorator should be used
only for missing dependencies (including missing system requirements).
"""
@functools.wraps(wrapped)
def wrapper(*args, **kwargs):
try:
return wrapped(*args, **kwargs)
except (testtools.TestCase.skipException, unittest.SkipTest) as e:
if base.bool_from_env('OS_FAIL_ON_MISSING_DEPS'):
tools.fail(
'%s cannot be skipped because OS_FAIL_ON_MISSING_DEPS '
'is enabled, skip reason: %s' % (wrapped.__name__, e))
raise
return wrapper