charm-interface-neutron-plu.../unit_tests/test_provides.py

232 lines
8.9 KiB
Python

# Copyright 2019 Canonical Ltd
#
# 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 json
from unittest import mock
import charms_openstack.test_utils as test_utils
import provides
_hook_args = {}
def mock_hook(*args, **kwargs):
def inner(f):
# remember what we were passed. Note that we can't actually determine
# the class we're attached to, as the decorator only gets the function.
_hook_args[f.__name__] = dict(args=args, kwargs=kwargs)
return f
return inner
class TestNeutronPluginApiSubordinateProvides(test_utils.PatchHelper):
@classmethod
def setUpClass(cls):
cls._patched_hook = mock.patch('charms.reactive.hook', mock_hook)
cls._patched_hook_started = cls._patched_hook.start()
# force providesto rerun the mock_hook decorator:
# try except is Python2/Python3 compatibility as Python3 has moved
# reload to importlib.
try:
reload(provides)
except NameError:
import importlib
importlib.reload(provides)
@classmethod
def tearDownClass(cls):
cls._patched_hook.stop()
cls._patched_hook_started = None
cls._patched_hook = None
# and fix any breakage we did to the module
try:
reload(provides)
except NameError:
import importlib
importlib.reload(provides)
def setUp(self):
self._patches = {}
self._patches_start = {}
conversation = mock.MagicMock()
self.target = provides.NeutronPluginAPISubordinate(
'some-relation', [conversation])
def tearDown(self):
self.target = None
for k, v in self._patches.items():
v.stop()
setattr(self, k, None)
self._patches = None
self._patches_start = None
def patch_target(self, attr, return_value=None):
mocked = mock.patch.object(self.target, attr)
self._patches[attr] = mocked
started = mocked.start()
started.return_value = return_value
self._patches_start[attr] = started
setattr(self, attr, started)
def patch_topublish(self):
self.patch_target('_relations')
relation = mock.MagicMock()
to_publish = mock.PropertyMock()
type(relation).to_publish = to_publish
self._relations.__iter__.return_value = [relation]
return relation.to_publish
def test_registered_hooks(self):
# test that the hooks actually registered the relation expressions that
# are meaningful for this interface: this is to handle regressions.
# The keys are the function names that the hook attaches to.
hook_patterns = {
'changed': (
'{provides:neutron-plugin-api-subordinate}-'
'relation-{joined,changed}', ),
'broken': (
'{provides:neutron-plugin-api-subordinate}-'
'relation-{broken,departed}', ),
}
for k, v in _hook_args.items():
self.assertEqual(hook_patterns[k], v['args'])
def test_changed(self):
conversation = mock.MagicMock()
self.patch_target('conversation', conversation)
self.patch_target('set_state')
self.patch_target('get_remote')
self.get_remote.return_value = None
self.target.changed()
self.set_state.assert_called_once_with('{relation_name}.connected')
self.set_state.reset_mock()
self.get_remote.return_value = 'yes'
self.target.changed()
self.set_state.assert_has_calls([
mock.call('{relation_name}.connected'),
mock.call('{relation_name}.available'),
])
def test_broken(self):
conversation = mock.MagicMock()
self.patch_target('conversation', conversation)
self.patch_target('remove_state')
self.target.broken()
self.remove_state.assert_has_calls([
mock.call('{relation_name}.available'),
mock.call('{relation_name}.connected'),
])
def test_neutron_api_ready(self):
self.patch_target('get_remote')
self.get_remote.return_value = 'yes'
self.assertTrue(self.target.neutron_api_ready())
self.get_remote.return_value = None
self.assertFalse(self.target.neutron_api_ready())
def teat_neutron_config_data(self):
self.patch_target('get_remote')
self.get_remote = json.dumps({'k': 'v'})
self.assertEquals(self.target.neutron_config_data, {'k': 'v'})
def test_configure_plugin(self):
self.patch_target('set_remote')
self.target.configure_plugin('aPlugin',
'aCorePlugin',
'aNeutronPluginConfig',
'servicePlugins1,servicePlugin2',
{'aKey': 'aValue'},
'extensionDriver1,extensionDriver2',
'mechanismDriver1,mechanismDriver2',
'typeDriver1,typeDriver2',
'toggleSecurityGroups',
)
self.set_remote.assert_called_once_with(
**{
'core-plugin': 'aCorePlugin',
'neutron-plugin': 'aPlugin',
'neutron-plugin-config': 'aNeutronPluginConfig',
'service-plugins': 'servicePlugins1,servicePlugin2',
'extension-drivers': 'extensionDriver1,extensionDriver2',
'mechanism-drivers': 'mechanismDriver1,mechanismDriver2',
'tenant-network-types': 'typeDriver1,typeDriver2',
'neutron-security-groups': 'toggleSecurityGroups',
'subordinate_configuration': json.dumps({'aKey': 'aValue'})},
)
def test_request_restart(self):
self.patch_object(provides.uuid, 'uuid4')
self.uuid4.return_value = 'fake-uuid'
self.patch_target('set_remote')
self.target.request_restart()
self.set_remote.assert_called_once_with(
**{'restart-trigger': 'fake-uuid'},
)
self.set_remote.reset_mock()
self.target.request_restart('aServiceType')
self.set_remote.assert_called_once_with(
**{'restart-trigger-aServiceType': 'fake-uuid'},
)
def test_request_db_migration(self):
self.patch_target('neutron_api_ready')
self.patch_object(provides.uuid, 'uuid4')
self.neutron_api_ready.return_value = False
self.target.request_db_migration()
self.assertFalse(self.uuid4.called)
self.patch_target('set_remote')
self.patch_object(provides.reactive, 'set_flag')
self.patch_object(provides.reactive, 'clear_flag')
self.neutron_api_ready.return_value = True
self.uuid4.return_value = 'fake-uuid'
self.target.request_db_migration()
self.set_remote.assert_called_once_with(
**{'migrate-database-nonce': 'fake-uuid'})
self.set_flag.assert_has_calls([
mock.call('some-relation.db_migration'),
mock.call('some-relation.db_migration.fake-uuid'),
])
self.clear_flag.assert_called_once_with('some-relation.available')
def test_db_migration_pending(self):
self.patch_object(provides.reactive, 'is_flag_set')
self.patch_target('get_remote')
self.is_flag_set.return_value = False
self.target.db_migration_pending()
self.is_flag_set.assert_called_once_with('some-relation.db_migration')
self.assertFalse(self.get_remote.called)
self.is_flag_set.side_effect = [True, False]
self.get_remote.return_value = 'fake-uuid'
self.assertTrue(self.target.db_migration_pending())
self.get_remote.assert_called_once_with('migrate-database-nonce', '')
self.is_flag_set.assert_has_calls([
mock.call('some-relation.db_migration'),
mock.call('some-relation.db_migration.fake-uuid'),
])
self.is_flag_set.side_effect = [True, True]
self.patch_object(provides.reactive, 'clear_flag')
self.patch_object(provides.reactive, 'get_flags')
self.get_flags.return_value = [
'some-relation.db_migration.fake-uuid',
'some-relation.db_migration',
]
self.assertFalse(self.target.db_migration_pending())
self.clear_flag.assert_has_calls([
mock.call('some-relation.db_migration.fake-uuid'),
mock.call('some-relation.db_migration'),
])