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# 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 os
from unittest import mock
from sqlalchemy import exc as sa_exc
from sqlalchemy import inspect
from sqlalchemy import schema
from sqlalchemy import types
from oslo_db import exception
from oslo_db.sqlalchemy import enginefacade
from oslo_db.sqlalchemy import provision
from oslo_db.sqlalchemy import test_fixtures
from oslo_db.tests import base as test_base
from oslo_db.tests.sqlalchemy import base as db_test_base
class DropAllObjectsTest(db_test_base._DbTestCase):
def setUp(self):
super(DropAllObjectsTest, self).setUp()
self.metadata = metadata = schema.MetaData()
schema.Table(
'a', metadata,
schema.Column('id', types.Integer, primary_key=True),
mysql_engine='InnoDB'
)
schema.Table(
'b', metadata,
schema.Column('id', types.Integer, primary_key=True),
schema.Column('a_id', types.Integer, schema.ForeignKey('a.id')),
mysql_engine='InnoDB'
)
schema.Table(
'c', metadata,
schema.Column('id', types.Integer, primary_key=True),
schema.Column('b_id', types.Integer, schema.ForeignKey('b.id')),
schema.Column(
'd_id', types.Integer,
schema.ForeignKey('d.id', use_alter=True, name='c_d_fk')),
mysql_engine='InnoDB'
)
schema.Table(
'd', metadata,
schema.Column('id', types.Integer, primary_key=True),
schema.Column('c_id', types.Integer, schema.ForeignKey('c.id')),
mysql_engine='InnoDB'
)
metadata.create_all(self.engine, checkfirst=False)
# will drop nothing if the test worked
self.addCleanup(metadata.drop_all, self.engine, checkfirst=True)
def test_drop_all(self):
insp = inspect(self.engine)
self.assertEqual(
set(['a', 'b', 'c', 'd']),
set(insp.get_table_names())
)
self._get_default_provisioned_db().\
backend.drop_all_objects(self.engine)
insp = inspect(self.engine)
self.assertEqual(
[],
insp.get_table_names()
)
class BackendNotAvailableTest(test_base.BaseTestCase):
def test_no_dbapi(self):
backend = provision.Backend(
"postgresql", "postgresql+nosuchdbapi://hostname/dsn")
with mock.patch(
"sqlalchemy.create_engine",
mock.Mock(side_effect=ImportError("nosuchdbapi"))):
# NOTE(zzzeek): Call and test the _verify function twice, as it
# exercises a different code path on subsequent runs vs.
# the first run
ex = self.assertRaises(
exception.BackendNotAvailable,
backend._verify)
self.assertEqual(
"Backend 'postgresql+nosuchdbapi' is unavailable: "
"No DBAPI installed", str(ex))
ex = self.assertRaises(
exception.BackendNotAvailable,
backend._verify)
self.assertEqual(
"Backend 'postgresql+nosuchdbapi' is unavailable: "
"No DBAPI installed", str(ex))
def test_cant_connect(self):
backend = provision.Backend(
"postgresql", "postgresql+nosuchdbapi://hostname/dsn")
with mock.patch(
"sqlalchemy.create_engine",
mock.Mock(return_value=mock.Mock(connect=mock.Mock(
side_effect=sa_exc.OperationalError(
"can't connect", None, None))
))
):
# NOTE(zzzeek): Call and test the _verify function twice, as it
# exercises a different code path on subsequent runs vs.
# the first run
ex = self.assertRaises(
exception.BackendNotAvailable,
backend._verify)
self.assertEqual(
"Backend 'postgresql+nosuchdbapi' is unavailable: "
"Could not connect", str(ex))
ex = self.assertRaises(
exception.BackendNotAvailable,
backend._verify)
self.assertEqual(
"Backend 'postgresql+nosuchdbapi' is unavailable: "
"Could not connect", str(ex))
class MySQLDropAllObjectsTest(
DropAllObjectsTest, db_test_base._MySQLOpportunisticTestCase,
):
pass
class PostgreSQLDropAllObjectsTest(
DropAllObjectsTest, db_test_base._PostgreSQLOpportunisticTestCase,
):
pass
class AdHocURLTest(test_base.BaseTestCase):
def test_sqlite_setup_teardown(self):
fixture = test_fixtures.AdHocDbFixture("sqlite:///foo.db")
fixture.setUp()
self.assertEqual(
str(enginefacade._context_manager._factory._writer_engine.url),
"sqlite:///foo.db"
)
self.assertTrue(os.path.exists("foo.db"))
fixture.cleanUp()
self.assertFalse(os.path.exists("foo.db"))
def test_mysql_setup_teardown(self):
try:
mysql_backend = provision.Backend.backend_for_database_type(
"mysql")
except exception.BackendNotAvailable:
self.skipTest("mysql backend not available")
mysql_backend.create_named_database("adhoc_test")
self.addCleanup(
mysql_backend.drop_named_database, "adhoc_test"
)
url = str(mysql_backend.provisioned_database_url("adhoc_test"))
fixture = test_fixtures.AdHocDbFixture(url)
fixture.setUp()
self.assertEqual(
str(enginefacade._context_manager._factory._writer_engine.url),
url
)
fixture.cleanUp()
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