murano/murano/tests/unit/engine/system/test_garbage_collector.py

80 lines
3.0 KiB
Python

# Copyright (c) 2016 Mirantis, 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 weakref
import mock
from testtools import matchers
from murano.dsl import exceptions
from murano.dsl import murano_method
from murano.dsl import murano_object
from murano.dsl import murano_type
from murano.dsl.principal_objects import garbage_collector
from murano.tests.unit import base
class TestGarbageCollector(base.MuranoTestCase):
def setUp(self):
super(TestGarbageCollector, self).setUp()
self.subscriber = mock.MagicMock(spec=murano_object.MuranoObject)
self.subscriber.real_this = self.subscriber
mock_class = mock.MagicMock(spec=murano_type.MuranoClass)
mock_method = mock.MagicMock(spec=murano_method.MuranoMethod)
mock_method.name = "mockHandler"
mock_class.methods = mock.PropertyMock(
return_value={"mockHandler": mock_method})
def find_single_method(name):
if name != 'mockHandler':
raise exceptions.NoMethodFound(name)
mock_class.find_single_method = find_single_method
self.subscriber.type = mock_class
self.publisher = mock.MagicMock(spec=murano_object.MuranoObject)
self.publisher.real_this = self.publisher
def test_set_dd(self):
self.publisher.destruction_dependencies = []
garbage_collector.GarbageCollector.subscribe_destruction(
self.publisher, self.subscriber, handler="mockHandler")
dep = self.publisher.destruction_dependencies
self.assertThat(dep, matchers.HasLength(1))
dep = dep[0]
self.assertEqual("mockHandler", dep["handler"])
self.assertEqual(self.subscriber, dep["subscriber"]())
def test_unset_dd(self):
self.publisher.destruction_dependencies = [{
"subscriber": weakref.ref(self.subscriber),
"handler": "mockHandler"
}]
garbage_collector.GarbageCollector.unsubscribe_destruction(
self.publisher, self.subscriber, handler="mockHandler")
self.assertEqual(
[], self.publisher.destruction_dependencies)
def test_set_wrong_handler(self):
self.assertRaises(
exceptions.NoMethodFound,
garbage_collector.GarbageCollector.subscribe_destruction,
self.publisher, self.subscriber, handler="invalidHandler")
self.assertRaises(
exceptions.NoMethodFound,
garbage_collector.GarbageCollector.unsubscribe_destruction,
self.publisher, self.subscriber, handler="invalidHandler")