charm-trilio-data-mover/unit_tests/test_data_mover.py

118 lines
3.9 KiB
Python

# Copyright 2020 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.
import mock
import reactive.data_mover_handlers as datamover
import charms_openstack.test_utils as test_utils
_when_args = {}
_when_not_args = {}
def mock_hook_factory(d):
def mock_hook(*args, **kwargs):
def inner(f):
# remember what we were passed. Note that we can't actually
# determine the class we're attached to, as the decorator only gets
# the function.
try:
d[f.__name__].append(dict(args=args, kwargs=kwargs))
except KeyError:
d[f.__name__] = [dict(args=args, kwargs=kwargs)]
return f
return inner
return mock_hook
class Test(test_utils.PatchHelper):
@classmethod
def setUpClass(cls):
cls._patched_when = mock.patch(
"charms.reactive.when", mock_hook_factory(_when_args)
)
cls._patched_when_started = cls._patched_when.start()
cls._patched_when_not = mock.patch(
"charms.reactive.when_not", mock_hook_factory(_when_not_args)
)
cls._patched_when_not_started = cls._patched_when_not.start()
# force requires to rerun the mock_hook decorator:
# try except is Python2/Python3 compatibility as Python3 has moved
# reload to importlib.
try:
reload(datamover)
except NameError:
import importlib
importlib.reload(datamover)
@classmethod
def tearDownClass(cls):
cls._patched_when.stop()
cls._patched_when_started = None
cls._patched_when = None
cls._patched_when_not.stop()
cls._patched_when_not_started = None
cls._patched_when_not = None
# and fix any breakage we did to the module
try:
reload(datamover)
except NameError:
import importlib
importlib.reload(datamover)
def test_registered_hooks(self):
# test that the hooks actually registered the relation expressions that
# are meaningful for this interface: this is to handle regressions.
# The keys are the function names that the hook attaches to.
when_patterns = {
"render_config": ("amqp.available",),
"default_amqp_connection": ("amqp.connected",),
"install_source_changed": (
"config.changed.triliovault-pkg-source",
),
"configure_ceph": (
"ceph.available",
),
"ceph_connected": (
"ceph.connected",
),
}
when_not_patterns = {
"ceph_connected": (
"ceph.access.req.sent",
),
}
# check the when hooks are attached to the expected functions
for t, p in [
(_when_args, when_patterns),
(_when_not_args, when_not_patterns),
]:
for f, args in t.items():
# check that function is in patterns
self.assertTrue(f in p.keys(), "{} not found".format(f))
# check that the lists are equal
lists = []
for a in args:
lists += a["args"][:]
self.assertEqual(
sorted(lists),
sorted(p[f]),
"{}: incorrect state registration".format(f),
)