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# Copyright 2017 Huawei Technologies Co.,LTD.
# 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 os
from oslo_config import cfg
from oslo_config import fixture as config_fixture
from oslo_context import context
from oslo_db import options
from oslo_log import log
from oslotest import base
import pecan
import contextlib
import mock
from cyborg.common import config as cyborg_config
from cyborg.tests.unit import policy_fixture
CONF = cfg.CONF
options.set_defaults(cfg.CONF)
try:
log.register_options(CONF)
except cfg.ArgsAlreadyParsedError:
pass
class TestCase(base.BaseTestCase):
"""Test case base class for all unit tests."""
def setUp(self):
super(TestCase, self).setUp()
self.context = context.get_admin_context()
self._set_config()
self.policy = self.useFixture(policy_fixture.PolicyFixture())
def _set_config(self):
self.cfg_fixture = self.useFixture(config_fixture.Config(cfg.CONF))
self.config(use_stderr=False,
fatal_exception_format_errors=True)
self.set_defaults(host='fake-mini',
debug=True)
self.set_defaults(connection="sqlite://",
sqlite_synchronous=False,
group='database')
cyborg_config.parse_args([], default_config_files=[])
def config(self, **kw):
"""Override config options for a test."""
self.cfg_fixture.config(**kw)
def set_defaults(self, **kw):
"""Set default values of config options."""
group = kw.pop('group', None)
for o, v in kw.items():
self.cfg_fixture.set_default(o, v, group=group)
def get_path(self, project_file=None):
"""Get the absolute path to a file. Used for testing the API.
:param project_file: File whose path to return. Default: None.
:returns: path to the specified file, or path to project root.
"""
root = os.path.abspath(
os.path.join(os.path.dirname(__file__), '..', '..')
)
if project_file:
return os.path.join(root, project_file)
else:
return root
# Test worker cannot survive eventlet's Timeout exception, which effectively
# kills the whole worker, with all test cases scheduled to it. This metaclass
# makes all test cases convert Timeout exceptions into unittest friendly
# failure mode (self.fail).
class DietTestCase(base.BaseTestCase):
"""Same great taste, less filling.
BaseTestCase is responsible for doing lots of plugin-centric setup
that not all tests require (or can tolerate). This class provides
only functionality that is common across all tests.
"""
def setUp(self):
super(DietTestCase, self).setUp()
options.set_defaults(cfg.CONF, connection='sqlite://')
debugger = os.environ.get('OS_POST_MORTEM_DEBUGGER')
if debugger:
self.addOnException(post_mortem_debug.get_exception_handler(
debugger))
self.addCleanup(mock.patch.stopall)
self.addOnException(self.check_for_systemexit)
self.orig_pid = os.getpid()
def addOnException(self, handler):
def safe_handler(*args, **kwargs):
try:
return handler(*args, **kwargs)
except Exception:
with excutils.save_and_reraise_exception(reraise=False) as ctx:
self.addDetail('Failure in exception handler %s' % handler,
testtools.content.TracebackContent(
(ctx.type_, ctx.value, ctx.tb), self))
return super(DietTestCase, self).addOnException(safe_handler)
def check_for_systemexit(self, exc_info):
if isinstance(exc_info[1], SystemExit):
if os.getpid() != self.orig_pid:
# Subprocess - let it just exit
raise
# This makes sys.exit(0) still a failure
self.force_failure = True
@contextlib.contextmanager
def assert_max_execution_time(self, max_execution_time=5):
with eventlet.Timeout(max_execution_time, False):
yield
return
self.fail('Execution of this test timed out')
def assertOrderedEqual(self, expected, actual):
expect_val = self.sort_dict_lists(expected)
actual_val = self.sort_dict_lists(actual)
self.assertEqual(expect_val, actual_val)
def sort_dict_lists(self, dic):
for key, value in dic.items():
if isinstance(value, list):
dic[key] = sorted(value)
elif isinstance(value, dict):
dic[key] = self.sort_dict_lists(value)
return dic
def assertDictSupersetOf(self, expected_subset, actual_superset):
"""Checks that actual dict contains the expected dict.
After checking that the arguments are of the right type, this checks
that each item in expected_subset is in, and matches, what is in
actual_superset. Separate tests are done, so that detailed info can
be reported upon failure.
"""
if not isinstance(expected_subset, dict):
self.fail("expected_subset (%s) is not an instance of dict" %
type(expected_subset))
if not isinstance(actual_superset, dict):
self.fail("actual_superset (%s) is not an instance of dict" %
type(actual_superset))
for k, v in expected_subset.items():
self.assertIn(k, actual_superset)
self.assertEqual(v, actual_superset[k],
"Key %(key)s expected: %(exp)r, actual %(act)r" %
{'key': k, 'exp': v, 'act': actual_superset[k]})
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