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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.
from oslotest import base as oslo_test_base
from sqlalchemy import inspect
from sqlalchemy import schema
from sqlalchemy import types
from oslo_db import exception
from oslo_db.sqlalchemy import provision
from oslo_db.sqlalchemy import test_base
class DropAllObjectsTest(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.db.backend.drop_all_objects(self.engine)
insp = inspect(self.engine)
self.assertEqual(
[],
insp.get_table_names()
)
class MySQLDropAllObjectsTest(
DropAllObjectsTest, test_base.MySQLOpportunisticTestCase):
pass
class PostgreSQLDropAllObjectsTest(
DropAllObjectsTest, test_base.PostgreSQLOpportunisticTestCase):
pass
class RetainSchemaTest(oslo_test_base.BaseTestCase):
DRIVER = "sqlite"
def setUp(self):
super(RetainSchemaTest, self).setUp()
metadata = schema.MetaData()
self.test_table = schema.Table(
'test_table', metadata,
schema.Column('x', types.Integer),
schema.Column('y', types.Integer),
mysql_engine='InnoDB'
)
def gen_schema(engine):
metadata.create_all(engine, checkfirst=False)
self._gen_schema = gen_schema
def test_once(self):
self._run_test()
def test_twice(self):
self._run_test()
def _run_test(self):
try:
database_resource = provision.DatabaseResource(self.DRIVER)
except exception.BackendNotAvailable:
self.skip("database not available")
schema_resource = provision.SchemaResource(
database_resource, self._gen_schema)
transaction_resource = provision.TransactionResource(
database_resource, schema_resource)
engine = transaction_resource.getResource()
with engine.connect() as conn:
rows = conn.execute(self.test_table.select())
self.assertEqual(rows.fetchall(), [])
trans = conn.begin()
conn.execute(
self.test_table.insert(),
{"x": 1, "y": 2}
)
trans.rollback()
rows = conn.execute(self.test_table.select())
self.assertEqual(rows.fetchall(), [])
trans = conn.begin()
conn.execute(
self.test_table.insert(),
{"x": 2, "y": 3}
)
trans.commit()
rows = conn.execute(self.test_table.select())
self.assertEqual(rows.fetchall(), [(2, 3)])
transaction_resource.finishedWith(engine)
class MySQLRetainSchemaTest(RetainSchemaTest):
DRIVER = "mysql"
class PostgresqlRetainSchemaTest(RetainSchemaTest):
DRIVER = "postgresql"
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