charms.openstack/unit_tests/charms_openstack/charm/utils.py

90 lines
2.3 KiB
Python

import mock
import unit_tests.utils
import charms_openstack.charm.core as chm_core
class BaseOpenStackCharmTest(unit_tests.utils.BaseTestCase):
@classmethod
def setUpClass(cls):
cls.patched_config = mock.patch.object(chm_core.hookenv, 'config')
cls.patched_config_started = cls.patched_config.start()
@classmethod
def tearDownClass(cls):
cls.patched_config.stop()
cls.patched_config_started = None
cls.patched_config = None
def _get_config(self, x=None):
if x:
return self._test_config.get(x, None)
else:
return self._test_config
def setUp(self, target_cls, test_config):
super().setUp()
# set up the return value on the mock before instantiating the class to
# get the config into the class.config.
self._test_config = test_config
chm_core.hookenv.config.side_effect = self._get_config
self.target = target_cls()
def tearDown(self):
self.target = None
# if we've created a singleton on the module, also destroy that.
chm_core._singleton = None
super().tearDown()
def patch_target(self, attr, return_value=None, name=None, new=None,
**kwargs):
# uses BaseTestCase.patch_object() to patch targer.
self.patch_object(self.target, attr, return_value, name, new, **kwargs)
class TestConfig(object):
def __init__(self):
self.config = {}
self.config_prev = {}
def __call__(self, key=None):
if key:
return self.get(key)
else:
return self
def previous(self, k):
return self.config_prev[k] if k in self.config_prev else self.config[k]
def set_previous(self, k, v):
self.config_prev[k] = v
def unset_previous(self, k):
if k in self.config_prev:
self.config_prev.pop(k)
def changed(self, k):
if not self.config_prev:
return True
return self.get(k) != self.previous(k)
def get(self, attr=None):
if not attr:
return self
try:
return self.config[attr]
except KeyError:
return None
def get_all(self):
return self.config
def set(self, attr, value):
self.config[attr] = value
def __getitem__(self, k):
return self.get(k)