poppy/tests/unit/common/test_decorators.py

51 lines
1.5 KiB
Python

# Copyright (c) 2014 Rackspace, 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.
from poppy.common import decorators
from tests.unit import base
class LazyPropertyTest(base.TestCase):
def test_delete(self):
original_value = object()
new_value = object()
class TestClass(object):
@decorators.lazy_property(write=True)
def var(self):
return original_value
test_class = TestClass()
setattr(test_class, 'var', new_value)
self.assertEqual(new_value, test_class.var)
del test_class.var
self.assertEqual(original_value, test_class.var)
def test_set(self):
original_value = object()
new_value = object()
class TestClass(object):
@decorators.lazy_property(write=True)
def var(self):
return original_value
test_class = TestClass()
setattr(test_class, 'var', new_value)
self.assertEqual(new_value, test_class.var)