osc-lib/osc_lib/tests/utils/__init__.py

437 lines
14 KiB
Python

# Copyright 2012-2013 OpenStack Foundation
# Copyright 2013 Nebula Inc.
#
# 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 contextlib
import copy
import json as jsonutils
import mock
import os
from cliff import columns as cliff_columns
import fixtures
from keystoneauth1 import loading
from openstack.config import cloud_region
from openstack.config import defaults
from oslo_utils import importutils
from requests_mock.contrib import fixture
import six
import testtools
from osc_lib import clientmanager
from osc_lib import shell
from osc_lib.tests import fakes
def fake_execute(shell, cmd):
"""Pretend to execute shell commands."""
return shell.run(cmd.split())
def make_shell(shell_class=None):
"""Create a new command shell and mock out some bits."""
if shell_class is None:
shell_class = shell.OpenStackShell
_shell = shell_class()
_shell.command_manager = mock.Mock()
# _shell.cloud = mock.Mock()
return _shell
def opt2attr(opt):
if opt.startswith('--os-'):
attr = opt[5:]
elif opt.startswith('--'):
attr = opt[2:]
else:
attr = opt
return attr.lower().replace('-', '_')
def opt2env(opt):
return opt[2:].upper().replace('-', '_')
class EnvFixture(fixtures.Fixture):
"""Environment Fixture.
This fixture replaces os.environ with provided env or an empty env.
"""
def __init__(self, env=None):
self.new_env = env or {}
def _setUp(self):
self.orig_env, os.environ = os.environ, self.new_env
self.addCleanup(self.revert)
def revert(self):
os.environ = self.orig_env
class ParserException(Exception):
pass
class TestCase(testtools.TestCase):
def setUp(self):
testtools.TestCase.setUp(self)
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))
def assertNotCalled(self, m, msg=None):
"""Assert a function was not called"""
if m.called:
if not msg:
msg = 'method %s should not have been called' % m
self.fail(msg)
@contextlib.contextmanager
def subTest(self, *args, **kwargs):
"""This is a wrapper to unittest's subTest method.
This wrapper suppresses 2 issues:
* lack of support in older Python versions
* bug in testtools that breaks support for all versions
"""
try:
with super(TestCase, self).subTest(*args, **kwargs):
yield
except TypeError:
# NOTE(elhararb): subTest is supported by unittest only from PY3.4
if six.PY2:
yield
else:
raise
except AttributeError:
# TODO(elhararb): remove this except clause when subTest is
# enabled in testtools
yield
class TestCommand(TestCase):
"""Test cliff command classes"""
def setUp(self):
super(TestCommand, self).setUp()
# Build up a fake app
self.fake_stdout = fakes.FakeStdout()
self.fake_log = fakes.FakeLog()
self.app = fakes.FakeApp(self.fake_stdout, self.fake_log)
self.app.client_manager = fakes.FakeClientManager()
def check_parser(self, cmd, args, verify_args):
cmd_parser = cmd.get_parser('check_parser')
try:
parsed_args = cmd_parser.parse_args(args)
except SystemExit:
raise ParserException("Argument parse failed")
for av in verify_args:
attr, value = av
if attr:
self.assertIn(attr, parsed_args)
self.assertEqual(value, getattr(parsed_args, attr))
return parsed_args
def assertItemEqual(self, expected, actual):
"""Compare item considering formattable columns.
This method compares an observed item to an expected item column by
column. If a column is a formattable column, observed and expected
columns are compared using human_readable() and machine_readable().
"""
self.assertEqual(len(expected), len(actual))
for col_expected, col_actual in zip(expected, actual):
if isinstance(col_expected, cliff_columns.FormattableColumn):
self.assertIsInstance(col_actual, col_expected.__class__)
self.assertEqual(col_expected.human_readable(),
col_actual.human_readable())
self.assertEqual(col_expected.machine_readable(),
col_actual.machine_readable())
else:
self.assertEqual(col_expected, col_actual)
def assertListItemEqual(self, expected, actual):
"""Compare a list of items considering formattable columns.
Each pair of observed and expected items are compared
using assertItemEqual() method.
"""
self.assertEqual(len(expected), len(actual))
for item_expected, item_actual in zip(expected, actual):
self.assertItemEqual(item_expected, item_actual)
class TestClientManager(TestCase):
"""ClientManager class test framework"""
default_password_auth = {
'auth_url': fakes.AUTH_URL,
'username': fakes.USERNAME,
'password': fakes.PASSWORD,
'project_name': fakes.PROJECT_NAME,
}
default_token_auth = {
'auth_url': fakes.AUTH_URL,
'token': fakes.AUTH_TOKEN,
}
def setUp(self):
super(TestClientManager, self).setUp()
self.mock = mock.Mock()
self.requests = self.useFixture(fixture.Fixture())
# fake v2password token retrieval
self.stub_auth(json=fakes.TEST_RESPONSE_DICT)
# fake token and token_endpoint retrieval
self.stub_auth(json=fakes.TEST_RESPONSE_DICT,
url='/'.join([fakes.AUTH_URL, 'v2.0/tokens']))
# fake v3password token retrieval
self.stub_auth(json=fakes.TEST_RESPONSE_DICT_V3,
url='/'.join([fakes.AUTH_URL, 'v3/auth/tokens']))
# fake password token retrieval
self.stub_auth(json=fakes.TEST_RESPONSE_DICT_V3,
url='/'.join([fakes.AUTH_URL, 'auth/tokens']))
# fake password version endpoint discovery
self.stub_auth(json=fakes.TEST_VERSIONS,
url=fakes.AUTH_URL,
verb='GET')
# Mock the auth plugin
self.auth_mock = mock.Mock()
def stub_auth(self, json=None, url=None, verb=None, **kwargs):
subject_token = fakes.AUTH_TOKEN
base_url = fakes.AUTH_URL
if json:
text = jsonutils.dumps(json)
headers = {
'X-Subject-Token': subject_token,
'Content-Type': 'application/json',
}
if not url:
url = '/'.join([base_url, 'tokens'])
url = url.replace("/?", "?")
if not verb:
verb = 'POST'
self.requests.register_uri(
verb,
url,
headers=headers,
text=text,
)
def _clientmanager_class(self):
"""Allow subclasses to override the ClientManager class"""
return clientmanager.ClientManager
def _make_clientmanager(
self,
auth_args=None,
config_args=None,
identity_api_version=None,
auth_plugin_name=None,
auth_required=None,
):
if identity_api_version is None:
identity_api_version = '2.0'
if auth_plugin_name is None:
auth_plugin_name = 'password'
if auth_plugin_name.endswith('password'):
auth_dict = copy.deepcopy(self.default_password_auth)
elif auth_plugin_name.endswith('token'):
auth_dict = copy.deepcopy(self.default_token_auth)
else:
auth_dict = {}
if auth_args is not None:
auth_dict = auth_args
cli_options = defaults.get_defaults()
cli_options.update({
'auth_type': auth_plugin_name,
'auth': auth_dict,
'interface': fakes.INTERFACE,
'region_name': fakes.REGION_NAME,
# 'workflow_api_version': '2',
})
if config_args is not None:
cli_options.update(config_args)
loader = loading.get_plugin_loader(auth_plugin_name)
auth_plugin = loader.load_from_options(**auth_dict)
client_manager = self._clientmanager_class()(
cli_options=cloud_region.CloudRegion(
name='t1',
region_name='1',
config=cli_options,
auth_plugin=auth_plugin,
),
api_version={
'identity': identity_api_version,
},
)
client_manager._auth_required = auth_required is True
client_manager.setup_auth()
client_manager.auth_ref
self.assertEqual(
auth_plugin_name,
client_manager.auth_plugin_name,
)
return client_manager
class TestShell(TestCase):
# Full name of the OpenStackShell class to test (cliff.app.App subclass)
shell_class_name = "osc_lib.shell.OpenStackShell"
def setUp(self):
super(TestShell, self).setUp()
self.shell_class = importutils.import_class(self.shell_class_name)
self.cmd_patch = mock.patch(self.shell_class_name + ".run_subcommand")
self.cmd_save = self.cmd_patch.start()
self.addCleanup(self.cmd_patch.stop)
self.app = mock.Mock("Test Shell")
def _assert_initialize_app_arg(self, cmd_options, default_args):
"""Check the args passed to initialize_app()
The argv argument to initialize_app() is the remainder from parsing
global options declared in both cliff.app and
osc_lib.OpenStackShell build_option_parser(). Any global
options passed on the command line should not be in argv but in
_shell.options.
"""
with mock.patch(
self.shell_class_name + ".initialize_app",
self.app,
):
_shell = make_shell(shell_class=self.shell_class)
_cmd = cmd_options + " module list"
fake_execute(_shell, _cmd)
self.app.assert_called_with(["module", "list"])
for k in default_args.keys():
self.assertEqual(
default_args[k],
vars(_shell.options)[k],
"%s does not match" % k,
)
def _assert_cloud_region_arg(self, cmd_options, default_args):
"""Check the args passed to OpenStackConfig.get_one()
The argparse argument to get_one() is an argparse.Namespace
object that contains all of the options processed to this point in
initialize_app().
"""
cloud = mock.Mock(name="cloudy")
cloud.config = {}
self.occ_get_one = mock.Mock(return_value=cloud)
with mock.patch(
"openstack.config.loader.OpenStackConfig.get_one",
self.occ_get_one,
):
_shell = make_shell(shell_class=self.shell_class)
_cmd = cmd_options + " module list"
fake_execute(_shell, _cmd)
self.app.assert_called_with(["module", "list"])
opts = self.occ_get_one.call_args[1]['argparse']
for k in default_args.keys():
self.assertEqual(
default_args[k],
vars(opts)[k],
"%s does not match" % k,
)
def _test_options_init_app(self, test_opts):
"""Test options on the command line"""
for opt in test_opts.keys():
if not test_opts[opt][1]:
continue
key = opt2attr(opt)
if isinstance(test_opts[opt][0], str):
cmd = opt + " " + test_opts[opt][0]
else:
cmd = opt
kwargs = {
key: test_opts[opt][0],
}
self._assert_initialize_app_arg(cmd, kwargs)
def _test_env_init_app(self, test_opts):
"""Test options in the environment"""
for opt in test_opts.keys():
if not test_opts[opt][2]:
continue
key = opt2attr(opt)
kwargs = {
key: test_opts[opt][0],
}
env = {
opt2env(opt): test_opts[opt][0],
}
os.environ = env.copy()
self._assert_initialize_app_arg("", kwargs)
def _test_options_get_one_cloud(self, test_opts):
"""Test options sent "to openstack.config"""
for opt in test_opts.keys():
if not test_opts[opt][1]:
continue
key = opt2attr(opt)
if isinstance(test_opts[opt][0], str):
cmd = opt + " " + test_opts[opt][0]
else:
cmd = opt
kwargs = {
key: test_opts[opt][0],
}
self._assert_cloud_region_arg(cmd, kwargs)
def _test_env_get_one_cloud(self, test_opts):
"""Test environment options sent "to openstack.config"""
for opt in test_opts.keys():
if not test_opts[opt][2]:
continue
key = opt2attr(opt)
kwargs = {
key: test_opts[opt][0],
}
env = {
opt2env(opt): test_opts[opt][0],
}
os.environ = env.copy()
self._assert_cloud_region_arg("", kwargs)