Juju Charm - Barbican
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charm-barbican/unit_tests/test_barbican_handlers.py

135 lines
4.7 KiB

from __future__ import absolute_import
from __future__ import print_function
import unittest
import mock
import reactive.barbican_handlers as handlers
_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 TestBarbicanHandlers(unittest.TestCase):
@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(handlers)
except NameError:
import importlib
importlib.reload(handlers)
@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(handlers)
except NameError:
import importlib
importlib.reload(handlers)
def setUp(self):
self._patches = {}
self._patches_start = {}
def tearDown(self):
for k, v in self._patches.items():
v.stop()
setattr(self, k, None)
self._patches = None
self._patches_start = None
def patch(self, obj, attr, return_value=None):
mocked = mock.patch.object(obj, attr)
self._patches[attr] = mocked
started = mocked.start()
started.return_value = return_value
self._patches_start[attr] = started
setattr(self, attr, started)
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 = {
'setup_amqp_req': ('amqp.connected', ),
'setup_database': ('shared-db.connected', ),
'setup_endpoint': ('identity-service.connected', ),
'render_stuff': ('shared-db.available',
'identity-service.available',
'amqp.available',),
}
when_not_patterns = {
'install_packages': ('charm.installed', ),
}
# 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())
# check that the lists are equal
l = [a['args'][0] for a in args]
self.assertEqual(l, sorted(p[f]))
def test_install_packages(self):
self.patch(handlers.barbican, 'install')
self.patch(handlers.reactive, 'set_state')
handlers.install_packages()
self.install.assert_called_once_with()
self.set_state.assert_called_once_with('charm.installed')
def test_setup_amqp_req(self):
self.patch(handlers.barbican, 'setup_amqp_req')
handlers.setup_amqp_req('amqp_object')
self.setup_amqp_req.assert_called_once_with('amqp_object')
def test_setup_database(self):
self.patch(handlers.barbican, 'setup_database')
handlers.setup_database('keystone_object')
self.setup_database.assert_called_once_with('keystone_object')
def test_setup_endpoint(self):
self.patch(handlers.barbican, 'setup_endpoint')
handlers.setup_endpoint('endpoint_object')
self.setup_endpoint.assert_called_once_with('endpoint_object')
def test_render_stuff(self):
self.patch(handlers.barbican, 'render_configs')
handlers.render_stuff('arg1', 'arg2')
self.render_configs.assert_called_once_with(('arg1', 'arg2', ))