# Copyright 2010 United States Government as represented by the # Administrator of the National Aeronautics and Space Administration. # All Rights Reserved. # # 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. """Base classes for our unit tests. Allows overriding of flags for use of fakes, and some black magic for inline callbacks. """ import os import shutil import uuid import fixtures import mock from oslo_concurrency import lockutils from oslo_config import cfg from oslo_config import fixture as config_fixture import oslo_i18n from oslo_messaging import conffixture as messaging_conffixture import oslotest.base as base_test from manila.db import migration from manila.db.sqlalchemy import api as db_api from manila.db.sqlalchemy import models as db_models from manila import rpc from manila import service from manila.tests import conf_fixture from manila.tests import fake_notifier test_opts = [ cfg.StrOpt('sqlite_clean_db', default='clean.sqlite', help='File name of clean sqlite database.'), ] CONF = cfg.CONF CONF.register_opts(test_opts) _DB_CACHE = None class Database(fixtures.Fixture): def __init__(self, db_session, db_migrate, sql_connection, sqlite_db, sqlite_clean_db): self.sql_connection = sql_connection self.sqlite_db = sqlite_db self.sqlite_clean_db = sqlite_clean_db self.engine = db_session.get_engine() self.engine.dispose() conn = self.engine.connect() if sql_connection == "sqlite://": self.setup_sqlite(db_migrate) else: testdb = os.path.join(CONF.state_path, sqlite_db) db_migrate.upgrade('head') if os.path.exists(testdb): return if sql_connection == "sqlite://": conn = self.engine.connect() self._DB = "".join(line for line in conn.connection.iterdump()) self.engine.dispose() else: cleandb = os.path.join(CONF.state_path, sqlite_clean_db) shutil.copyfile(testdb, cleandb) def setUp(self): super(Database, self).setUp() if self.sql_connection == "sqlite://": conn = self.engine.connect() conn.connection.executescript(self._DB) self.addCleanup(self.engine.dispose) # pylint: disable=E1101 else: shutil.copyfile( os.path.join(CONF.state_path, self.sqlite_clean_db), os.path.join(CONF.state_path, self.sqlite_db), ) def setup_sqlite(self, db_migrate): if db_migrate.version(): return db_models.BASE.metadata.create_all(self.engine) db_migrate.stamp('head') class TestCase(base_test.BaseTestCase): """Test case base class for all unit tests.""" def setUp(self): """Run before each test method to initialize test environment.""" super(TestCase, self).setUp() oslo_i18n.enable_lazy(enable=False) conf_fixture.set_defaults(CONF) CONF([], default_config_files=[]) global _DB_CACHE if not _DB_CACHE: _DB_CACHE = Database( db_api, migration, sql_connection=CONF.database.connection, sqlite_db=CONF.sqlite_db, sqlite_clean_db=CONF.sqlite_clean_db, ) self.useFixture(_DB_CACHE) self.injected = [] self._services = [] self.flags(fatal_exception_format_errors=True) # This will be cleaned up by the NestedTempfile fixture lock_path = self.useFixture(fixtures.TempDir()).path self.fixture = self.useFixture(config_fixture.Config(lockutils.CONF)) self.fixture.config(lock_path=lock_path, group='oslo_concurrency') self.fixture.config( disable_process_locking=True, group='oslo_concurrency') rpc.add_extra_exmods('manila.tests') self.addCleanup(rpc.clear_extra_exmods) self.addCleanup(rpc.cleanup) self.messaging_conf = messaging_conffixture.ConfFixture(CONF) self.messaging_conf.transport_driver = 'fake' self.messaging_conf.response_timeout = 15 self.useFixture(self.messaging_conf) rpc.init(CONF) mock.patch('keystoneauth1.loading.load_auth_from_conf_options').start() fake_notifier.stub_notifier(self) def tearDown(self): """Runs after each test method to tear down test environment.""" super(TestCase, self).tearDown() # Reset any overridden flags CONF.reset() # Stop any timers for x in self.injected: try: x.stop() except AssertionError: pass # Kill any services for x in self._services: try: x.kill() except Exception: pass # Delete attributes that don't start with _ so they don't pin # memory around unnecessarily for the duration of the test # suite for key in [k for k in self.__dict__.keys() if k[0] != '_']: del self.__dict__[key] def flags(self, **kw): """Override flag variables for a test.""" for k, v in kw.items(): CONF.set_override(k, v, enforce_type=True) def start_service(self, name, host=None, **kwargs): host = host and host or uuid.uuid4().hex kwargs.setdefault('host', host) kwargs.setdefault('binary', 'manila-%s' % name) svc = service.Service.create(**kwargs) svc.start() self._services.append(svc) return svc def mock_object(self, obj, attr_name, new_attr=None, **kwargs): """Use python mock to mock an object attribute Mocks the specified objects attribute with the given value. Automatically performs 'addCleanup' for the mock. """ if not new_attr: new_attr = mock.Mock() patcher = mock.patch.object(obj, attr_name, new_attr, **kwargs) patcher.start() self.addCleanup(patcher.stop) return new_attr def mock_class(self, class_name, new_val=None, **kwargs): """Use python mock to mock a class Mocks the specified objects attribute with the given value. Automatically performs 'addCleanup' for the mock. """ if not new_val: new_val = mock.Mock() patcher = mock.patch(class_name, new_val, **kwargs) patcher.start() self.addCleanup(patcher.stop) return new_val # Useful assertions def assertDictMatch(self, d1, d2, approx_equal=False, tolerance=0.001): """Assert two dicts are equivalent. This is a 'deep' match in the sense that it handles nested dictionaries appropriately. NOTE: If you don't care (or don't know) a given value, you can specify the string DONTCARE as the value. This will cause that dict-item to be skipped. """ def raise_assertion(msg): d1str = str(d1) d2str = str(d2) base_msg = ('Dictionaries do not match. %(msg)s d1: %(d1str)s ' 'd2: %(d2str)s' % {"msg": msg, "d1str": d1str, "d2str": d2str}) raise AssertionError(base_msg) d1keys = set(d1.keys()) d2keys = set(d2.keys()) if d1keys != d2keys: d1only = d1keys - d2keys d2only = d2keys - d1keys raise_assertion('Keys in d1 and not d2: %(d1only)s. ' 'Keys in d2 and not d1: %(d2only)s' % {"d1only": d1only, "d2only": d2only}) for key in d1keys: d1value = d1[key] d2value = d2[key] try: error = abs(float(d1value) - float(d2value)) within_tolerance = error <= tolerance except (ValueError, TypeError): # If both values aren't convertible to float, just ignore # ValueError if arg is a str, TypeError if it's something else # (like None) within_tolerance = False if hasattr(d1value, 'keys') and hasattr(d2value, 'keys'): self.assertDictMatch(d1value, d2value) elif 'DONTCARE' in (d1value, d2value): continue elif approx_equal and within_tolerance: continue elif d1value != d2value: raise_assertion("d1['%(key)s']=%(d1value)s != " "d2['%(key)s']=%(d2value)s" % { "key": key, "d1value": d1value, "d2value": d2value }) def assertDictListMatch(self, L1, L2, approx_equal=False, tolerance=0.001): """Assert a list of dicts are equivalent.""" def raise_assertion(msg): L1str = str(L1) L2str = str(L2) base_msg = ('List of dictionaries do not match: %(msg)s ' 'L1: %(L1str)s L2: %(L2str)s' % {"msg": msg, "L1str": L1str, "L2str": L2str}) raise AssertionError(base_msg) L1count = len(L1) L2count = len(L2) if L1count != L2count: raise_assertion('Length mismatch: len(L1)=%(L1count)d != ' 'len(L2)=%(L2count)d' % {"L1count": L1count, "L2count": L2count}) for d1, d2 in zip(L1, L2): self.assertDictMatch(d1, d2, approx_equal=approx_equal, tolerance=tolerance) def assertSubDictMatch(self, sub_dict, super_dict): """Assert a sub_dict is subset of super_dict.""" self.assertTrue(set(sub_dict.keys()).issubset(set(super_dict.keys()))) for k, sub_value in sub_dict.items(): super_value = super_dict[k] if isinstance(sub_value, dict): self.assertSubDictMatch(sub_value, super_value) elif 'DONTCARE' in (sub_value, super_value): continue else: self.assertEqual(sub_value, super_value) def assertIn(self, a, b, *args, **kwargs): """Python < v2.7 compatibility. Assert 'a' in 'b'.""" try: f = super(TestCase, self).assertIn except AttributeError: self.assertTrue(a in b, *args, **kwargs) else: f(a, b, *args, **kwargs) def assertNotIn(self, a, b, *args, **kwargs): """Python < v2.7 compatibility. Assert 'a' NOT in 'b'.""" try: f = super(TestCase, self).assertNotIn except AttributeError: self.assertFalse(a in b, *args, **kwargs) else: f(a, b, *args, **kwargs) def assertIsInstance(self, a, b, *args, **kwargs): """Python < v2.7 compatibility.""" try: f = super(TestCase, self).assertIsInstance except AttributeError: self.assertIsInstance(a, b) else: f(a, b, *args, **kwargs) def assertIsNone(self, a, *args, **kwargs): """Python < v2.7 compatibility.""" try: f = super(TestCase, self).assertIsNone except AttributeError: self.assertTrue(a is None) else: f(a, *args, **kwargs) def _dict_from_object(self, obj, ignored_keys): if ignored_keys is None: ignored_keys = [] return {k: v for k, v in obj.iteritems() if k not in ignored_keys} def _assertEqualListsOfObjects(self, objs1, objs2, ignored_keys=None): obj_to_dict = lambda o: self._dict_from_object(o, ignored_keys) sort_key = lambda d: [d[k] for k in sorted(d)] conv_and_sort = lambda obj: sorted(map(obj_to_dict, obj), key=sort_key) self.assertEqual(conv_and_sort(objs1), conv_and_sort(objs2))