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community.general/test/units/plugins/cache/test_cache.py
Adrian Likins 6c4f554f5a Provide slightly better msg on fact cache error (#18759)
If the configured fact_cache plugin (fact_caching config)
fails, raise a fatal error instead of failing mysteriously
later.

Fixes #18751
2016-12-13 14:34:58 -05:00

124 lines
4 KiB
Python

# (c) 2012-2015, Michael DeHaan <michael.dehaan@gmail.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
# Make coding more python3-ish
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
from ansible.compat.tests import unittest, mock
from ansible.errors import AnsibleError
from ansible.plugins.cache import FactCache
from ansible.plugins.cache.base import BaseCacheModule
from ansible.plugins.cache.memory import CacheModule as MemoryCache
HAVE_MEMCACHED = True
try:
import memcache
except ImportError:
HAVE_MEMCACHED = False
else:
# Use an else so that the only reason we skip this is for lack of
# memcached, not errors importing the plugin
from ansible.plugins.cache.memcached import CacheModule as MemcachedCache
HAVE_REDIS = True
try:
import redis
except ImportError:
HAVE_REDIS = False
else:
from ansible.plugins.cache.redis import CacheModule as RedisCache
class TestFactCache(unittest.TestCase):
def setUp(self):
with mock.patch('ansible.constants.CACHE_PLUGIN', 'memory'):
self.cache = FactCache()
def test_copy(self):
self.cache['avocado'] = 'fruit'
self.cache['daisy'] = 'flower'
a_copy = self.cache.copy()
self.assertEqual(type(a_copy), dict)
self.assertEqual(a_copy, dict(avocado='fruit', daisy='flower'))
def test_plugin_load_failure(self):
# See https://github.com/ansible/ansible/issues/18751
# Note no fact_connection config set, so this will fail
with mock.patch('ansible.constants.CACHE_PLUGIN', 'json'):
self.assertRaisesRegexp(AnsibleError,
"Unable to load the facts cache plugin.*json.*",
FactCache)
class TestAbstractClass(unittest.TestCase):
def setUp(self):
pass
def tearDown(self):
pass
def test_subclass_error(self):
class CacheModule1(BaseCacheModule):
pass
with self.assertRaises(TypeError):
CacheModule1()
class CacheModule2(BaseCacheModule):
def get(self, key):
super(CacheModule2, self).get(key)
with self.assertRaises(TypeError):
CacheModule2()
def test_subclass_success(self):
class CacheModule3(BaseCacheModule):
def get(self, key):
super(CacheModule3, self).get(key)
def set(self, key, value):
super(CacheModule3, self).set(key, value)
def keys(self):
super(CacheModule3, self).keys()
def contains(self, key):
super(CacheModule3, self).contains(key)
def delete(self, key):
super(CacheModule3, self).delete(key)
def flush(self):
super(CacheModule3, self).flush()
def copy(self):
super(CacheModule3, self).copy()
self.assertIsInstance(CacheModule3(), CacheModule3)
@unittest.skipUnless(HAVE_MEMCACHED, 'python-memcached module not installed')
def test_memcached_cachemodule(self):
self.assertIsInstance(MemcachedCache(), MemcachedCache)
def test_memory_cachemodule(self):
self.assertIsInstance(MemoryCache(), MemoryCache)
@unittest.skipUnless(HAVE_REDIS, 'Redis python module not installed')
def test_redis_cachemodule(self):
self.assertIsInstance(RedisCache(), RedisCache)