charms.openstack/unit_tests/test_charms_openstack_test_utils.py
Hervé Beraud f72403ad3c Stop to use the __future__ module.
The __future__ module [1] was used in this context to ensure compatibility
between python 2 and python 3.

We previously dropped the support of python 2.7 [2] and now we only support
python 3 so we don't need to continue to use this module and the imports
listed below.

Imports commonly used and their related PEPs:
- `division` is related to PEP 238 [3]
- `print_function` is related to PEP 3105 [4]
- `unicode_literals` is related to PEP 3112 [5]
- `with_statement` is related to PEP 343 [6]
- `absolute_import` is related to PEP 328 [7]

[1] https://docs.python.org/3/library/__future__.html
[2] https://governance.openstack.org/tc/goals/selected/ussuri/drop-py27.html
[3] https://www.python.org/dev/peps/pep-0238
[4] https://www.python.org/dev/peps/pep-3105
[5] https://www.python.org/dev/peps/pep-3112
[6] https://www.python.org/dev/peps/pep-0343
[7] https://www.python.org/dev/peps/pep-0328

Change-Id: Ib1ed5b598a52375e29e247db9ab4786df5b6d142
2020-06-02 20:06:38 +02:00

140 lines
4.1 KiB
Python

# Copyright 2016 Canonical Ltd
#
# 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.
# Note that the unit_tests/__init__.py has the following lines to stop
# side effects from the imorts from charm helpers.
# mock out some charmhelpers libraries as they have apt install side effects
# sys.modules['charmhelpers.contrib.openstack.utils'] = mock.MagicMock()
# sys.modules['charmhelpers.contrib.network.ip'] = mock.MagicMock()
import unittest
import charms.reactive
import charms_openstack.test_utils as test_utils
class TestPatchHelper(unittest.TestCase):
static_thing = None
def test_patch(self):
class ClassUnderTest(test_utils.PatchHelper):
def a_method(self):
self.value = TestPatchHelper.static_thing
# for py27 we have to convince unittest this is okay
def runTest(self):
pass
thing = ClassUnderTest()
thing.setUp()
self.assertEqual(thing._patches, {})
self.assertEqual(thing._patches_start, {})
thing.patch('unit_tests.test_charms_openstack_test_utils.'
'TestPatchHelper.static_thing',
name='a', new=5)
self.assertIn('a', thing._patches)
self.assertIn('a', thing._patches_start)
self.assertEqual(thing.a, 5)
self.assertEqual(self.static_thing, 5)
thing.a_method()
thing.tearDown()
self.assertEqual(thing._patches, None)
self.assertEqual(thing._patches_start, None)
self.assertEqual(self.static_thing, None)
self.assertEqual(thing.value, 5)
def test_patch_object(self):
class ClassUnderTest(test_utils.PatchHelper):
def a_method(self):
self.value = TestPatchHelper.static_thing
# for py27 we have to convince unittest this is okay
def runTest(self):
pass
thing = ClassUnderTest()
thing.setUp()
thing.patch_object(TestPatchHelper, 'static_thing',
name='a', new=10)
self.assertEqual(thing.a, 10)
self.assertEqual(self.static_thing, 10)
thing.a_method()
thing.tearDown()
self.assertEqual(thing.value, 10)
def test_patch_release(self):
import charmhelpers.core.unitdata as unitdata
class ClassUnderTest(test_utils.PatchHelper):
# for py27 we have to convince unittest this is okay
def runTest(self):
pass
thing = ClassUnderTest()
thing.setUp()
thing.patch_release('bugs-bunny')
self.assertEqual(unitdata.kv().get(), 'bugs-bunny')
thing.tearDown()
# These functions are to help with testing the mocking hooks.
@charms.reactive.when('when_state1')
def func1(state1):
pass
@charms.reactive.when_not('when_not_state1')
@charms.reactive.when_not('when_not_state2')
def func2():
pass
@charms.reactive.hook('hook_state1', 'hook_state3')
@charms.reactive.hook('hook_state2')
def func3():
pass
class TestTestRegisteredHooks(test_utils.TestRegisteredHooks):
def test_hooks(self):
defaults = [
'charm.installed',
]
hook_set = {
'when': {
'func1': ('when_state1', ),
},
'when_not': {
'func2': ('when_not_state1', 'when_not_state2'),
},
'hook': {
'func3': ('hook_state1', 'hook_state2', 'hook_state3', ),
},
}
# test that the hooks were registered via the
# reactive.barbican_handlers
import sys
handlers = sys.modules[__name__]
self.registered_hooks_test_helper(handlers, hook_set, defaults)