133 lines
5.3 KiB
Python
133 lines
5.3 KiB
Python
# Copyright 2019 Objectif Libre
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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from collections import abc
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from datetime import datetime
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import itertools
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from unittest import mock
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from cloudkitty import storage_state
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from cloudkitty import tests
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class StateManagerTest(tests.TestCase):
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class QueryMock(mock.Mock):
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"""Mocks an SQLalchemy query.
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``filter()`` can be called any number of times, followed by first(),
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which will cycle over the ``output`` parameter passed to the
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constructor. The ``first_called`` attributes
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"""
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def __init__(self, output, *args, **kwargs):
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super(StateManagerTest.QueryMock, self).__init__(*args, **kwargs)
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self.first_called = 0
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if not isinstance(output, abc.Iterable):
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output = (output, )
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self.output = itertools.cycle(output)
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def filter(self, *args, **kwargs):
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return self
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def first(self):
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self.first_called += 1
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return next(self.output)
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def setUp(self):
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super(StateManagerTest, self).setUp()
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self._state = storage_state.StateManager()
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self.conf.set_override('backend', 'fetcher1', 'fetcher')
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self.conf.set_override('collector', 'collector1', 'collect')
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self.conf.set_override('scope_key', 'scope_key', 'collect')
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def _get_query_mock(self, *args):
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output = self.QueryMock(args)
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return output, mock.Mock(return_value=output)
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@staticmethod
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def _get_r_mock(scope_key, collector, fetcher, state):
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r_mock = mock.Mock()
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r_mock.scope_key = scope_key
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r_mock.collector = collector
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r_mock.fetcher = fetcher
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r_mock.state = state
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return r_mock
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def _test_x_state_does_update_columns(self, func):
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r_mock = self._get_r_mock(None, None, None, datetime(2042, 1, 1))
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output, query_mock = self._get_query_mock(None, r_mock)
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with mock.patch('oslo_db.sqlalchemy.utils.model_query',
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new=query_mock):
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func('fake_identifier')
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self.assertEqual(output.first_called, 2)
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self.assertEqual(r_mock.collector, 'collector1')
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self.assertEqual(r_mock.scope_key, 'scope_key')
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self.assertEqual(r_mock.fetcher, 'fetcher1')
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def test_get_state_does_update_columns(self):
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self._test_x_state_does_update_columns(self._state.get_state)
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def test_set_state_does_update_columns(self):
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with mock.patch('cloudkitty.db.get_session'):
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self._test_x_state_does_update_columns(
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lambda x: self._state.set_state(x, datetime(2042, 1, 1)))
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def _test_x_state_no_column_update(self, func):
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r_mock = self._get_r_mock(
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'scope_key', 'collector1', 'fetcher1', datetime(2042, 1, 1))
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output, query_mock = self._get_query_mock(r_mock)
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with mock.patch('oslo_db.sqlalchemy.utils.model_query',
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new=query_mock):
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func('fake_identifier')
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self.assertEqual(output.first_called, 1)
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self.assertEqual(r_mock.collector, 'collector1')
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self.assertEqual(r_mock.scope_key, 'scope_key')
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self.assertEqual(r_mock.fetcher, 'fetcher1')
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def test_get_state_no_column_update(self):
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self._test_x_state_no_column_update(self._state.get_state)
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def test_set_state_no_column_update(self):
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with mock.patch('cloudkitty.db.get_session'):
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self._test_x_state_no_column_update(
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lambda x: self._state.set_state(x, datetime(2042, 1, 1)))
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def test_set_state_does_not_duplicate_entries(self):
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state = datetime(2042, 1, 1)
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_, query_mock = self._get_query_mock(
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self._get_r_mock('a', 'b', 'c', state))
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with mock.patch(
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'oslo_db.sqlalchemy.utils.model_query',
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new=query_mock), mock.patch('cloudkitty.db.get_session') as sm:
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sm.return_value = session_mock = mock.MagicMock()
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self._state.set_state('fake_identifier', state)
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session_mock.commit.assert_not_called()
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session_mock.add.assert_not_called()
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def test_set_state_does_update_state(self):
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r_mock = self._get_r_mock('a', 'b', 'c', datetime(2000, 1, 1))
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_, query_mock = self._get_query_mock(r_mock)
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new_state = datetime(2042, 1, 1)
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with mock.patch(
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'oslo_db.sqlalchemy.utils.model_query',
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new=query_mock), mock.patch('cloudkitty.db.get_session') as sm:
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sm.return_value = session_mock = mock.MagicMock()
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self.assertNotEqual(r_mock.state, new_state)
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self._state.set_state('fake_identifier', new_state)
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self.assertEqual(r_mock.state, new_state)
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session_mock.commit.assert_called_once()
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session_mock.add.assert_not_called()
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