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# 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.
from heat.engine import template_files
from heat.tests import common
from heat.tests import utils
template_files_1 = {'template file 1': 'Contents of template 1',
'template file 2': 'More template contents'}
class TestTemplateFiles(common.HeatTestCase):
def test_cache_miss(self):
ctx = utils.dummy_context()
tf1 = template_files.TemplateFiles(template_files_1)
tf1.store(ctx)
# As this is the only reference to the value in _d, deleting
# t1.files will cause the value to get removed from _d (due to
# it being a WeakValueDictionary.
del tf1.files
self.assertNotIn(tf1.files_id, template_files._d)
# this will cause the cache refresh
self.assertEqual(template_files_1['template file 1'],
tf1['template file 1'])
self.assertEqual(template_files_1, template_files._d[tf1.files_id])
def test_d_weakref_behaviour(self):
ctx = utils.dummy_context()
tf1 = template_files.TemplateFiles(template_files_1)
tf1.store(ctx)
tf2 = template_files.TemplateFiles(tf1)
del tf1.files
self.assertIn(tf2.files_id, template_files._d)
del tf2.files
self.assertNotIn(tf2.files_id, template_files._d)
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