Files
watcher/watcher/tests/objects/test_strategy.py
Vincent Françoise f54aca70cc Added 'goal' ObjectField for Strategy object
In this changeset, I added the "goal" ObjectField which can
either be loaded by setting the new "eager" parameter as True or
not loaded (as before) by setting it to False.
The advantage of introducing this eager parameter is that this way,
we can reduce to a minimum the overhead of DB queries whenever the
related goal is not actually needed.

Partially-Implements: blueprint watcher-versioned-objects
Change-Id: I103c9ed161d2cedf7b43c55f9e095ef66bf44dea
2016-11-07 10:39:20 +01:00

168 lines
7.2 KiB
Python

# Copyright 2015 OpenStack Foundation
# 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 mock
from watcher.common import exception
from watcher.db.sqlalchemy import api as db_api
from watcher import objects
from watcher.tests.db import base
from watcher.tests.db import utils
class TestStrategyObject(base.DbTestCase):
goal_id = 2
scenarios = [
('non_eager', dict(
eager=False, fake_strategy=utils.get_test_strategy(
goal_id=goal_id))),
('eager_with_non_eager_load', dict(
eager=True, fake_strategy=utils.get_test_strategy(
goal_id=goal_id))),
('eager_with_eager_load', dict(
eager=True, fake_strategy=utils.get_test_strategy(
goal_id=goal_id, goal=utils.get_test_goal(id=goal_id)))),
]
def setUp(self):
super(TestStrategyObject, self).setUp()
self.fake_goal = utils.create_test_goal(id=self.goal_id)
def eager_load_strategy_assert(self, strategy):
if self.eager:
self.assertIsNotNone(strategy.goal)
fields_to_check = set(
super(objects.Goal, objects.Goal).fields
).symmetric_difference(objects.Goal.fields)
db_data = {
k: v for k, v in self.fake_goal.as_dict().items()
if k in fields_to_check}
object_data = {
k: v for k, v in strategy.goal.as_dict().items()
if k in fields_to_check}
self.assertEqual(db_data, object_data)
@mock.patch.object(db_api.Connection, 'get_strategy_by_id')
def test_get_by_id(self, mock_get_strategy):
strategy_id = self.fake_strategy['id']
mock_get_strategy.return_value = self.fake_strategy
strategy = objects.Strategy.get(
self.context, strategy_id, eager=self.eager)
mock_get_strategy.assert_called_once_with(
self.context, strategy_id, eager=self.eager)
self.assertEqual(self.context, strategy._context)
self.eager_load_strategy_assert(strategy)
@mock.patch.object(db_api.Connection, 'get_strategy_by_uuid')
def test_get_by_uuid(self, mock_get_strategy):
uuid = self.fake_strategy['uuid']
mock_get_strategy.return_value = self.fake_strategy
strategy = objects.Strategy.get(self.context, uuid, eager=self.eager)
mock_get_strategy.assert_called_once_with(
self.context, uuid, eager=self.eager)
self.assertEqual(self.context, strategy._context)
self.eager_load_strategy_assert(strategy)
def test_get_bad_uuid(self):
self.assertRaises(exception.InvalidIdentity,
objects.Strategy.get, self.context, 'not-a-uuid')
@mock.patch.object(db_api.Connection, 'get_strategy_list')
def test_list(self, mock_get_list):
mock_get_list.return_value = [self.fake_strategy]
strategies = objects.Strategy.list(self.context, eager=self.eager)
self.assertEqual(1, mock_get_list.call_count, 1)
self.assertEqual(1, len(strategies))
self.assertIsInstance(strategies[0], objects.Strategy)
self.assertEqual(self.context, strategies[0]._context)
for strategy in strategies:
self.eager_load_strategy_assert(strategy)
@mock.patch.object(db_api.Connection, 'update_strategy')
@mock.patch.object(db_api.Connection, 'get_strategy_by_id')
def test_save(self, mock_get_strategy, mock_update_strategy):
_id = self.fake_strategy['id']
mock_get_strategy.return_value = self.fake_strategy
strategy = objects.Strategy.get_by_id(
self.context, _id, eager=self.eager)
strategy.name = 'UPDATED NAME'
strategy.save()
mock_get_strategy.assert_called_once_with(
self.context, _id, eager=self.eager)
mock_update_strategy.assert_called_once_with(
_id, {'name': 'UPDATED NAME'})
self.assertEqual(self.context, strategy._context)
self.eager_load_strategy_assert(strategy)
@mock.patch.object(db_api.Connection, 'get_strategy_by_id')
def test_refresh(self, mock_get_strategy):
_id = self.fake_strategy['id']
returns = [dict(self.fake_strategy, name="first name"),
dict(self.fake_strategy, name="second name")]
mock_get_strategy.side_effect = returns
expected = [mock.call(self.context, _id, eager=self.eager),
mock.call(self.context, _id, eager=self.eager)]
strategy = objects.Strategy.get(self.context, _id, eager=self.eager)
self.assertEqual("first name", strategy.name)
strategy.refresh(eager=self.eager)
self.assertEqual("second name", strategy.name)
self.assertEqual(expected, mock_get_strategy.call_args_list)
self.assertEqual(self.context, strategy._context)
self.eager_load_strategy_assert(strategy)
class TestCreateDeleteStrategyObject(base.DbTestCase):
def setUp(self):
super(TestCreateDeleteStrategyObject, self).setUp()
self.fake_goal = utils.create_test_goal()
self.fake_strategy = utils.get_test_strategy(goal_id=self.fake_goal.id)
@mock.patch.object(db_api.Connection, 'create_strategy')
def test_create(self, mock_create_strategy):
mock_create_strategy.return_value = self.fake_strategy
strategy = objects.Strategy(self.context, **self.fake_strategy)
strategy.create()
mock_create_strategy.assert_called_once_with(self.fake_strategy)
self.assertEqual(self.context, strategy._context)
@mock.patch.object(db_api.Connection, 'soft_delete_strategy')
@mock.patch.object(db_api.Connection, 'get_strategy_by_id')
def test_soft_delete(self, mock_get_strategy, mock_soft_delete):
_id = self.fake_strategy['id']
mock_get_strategy.return_value = self.fake_strategy
strategy = objects.Strategy.get_by_id(self.context, _id)
strategy.soft_delete()
mock_get_strategy.assert_called_once_with(
self.context, _id, eager=False)
mock_soft_delete.assert_called_once_with(_id)
self.assertEqual(self.context, strategy._context)
@mock.patch.object(db_api.Connection, 'destroy_strategy')
@mock.patch.object(db_api.Connection, 'get_strategy_by_id')
def test_destroy(self, mock_get_strategy, mock_destroy_strategy):
_id = self.fake_strategy['id']
mock_get_strategy.return_value = self.fake_strategy
strategy = objects.Strategy.get_by_id(self.context, _id)
strategy.destroy()
mock_get_strategy.assert_called_once_with(
self.context, _id, eager=False)
mock_destroy_strategy.assert_called_once_with(_id)
self.assertEqual(self.context, strategy._context)