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Merge "use SqlFixture and StaticSqlFixture from neutron-lib"

changes/77/671877/1
Zuul 2 years ago
committed by Gerrit Code Review
parent
commit
b3d9d9742a
  1. 116
      neutron/tests/unit/testlib_api.py

116
neutron/tests/unit/testlib_api.py

@ -13,19 +13,16 @@
# License for the specific language governing permissions and limitations
# under the License.
import fixtures
import six
import testresources
import testscenarios
import testtools
from neutron_lib.db import api as db_api
from neutron_lib.db import model_base
from neutron_lib import fixture as lib_fixtures
from oslo_config import cfg
from oslo_db import exception as oslodb_exception
from oslo_db.sqlalchemy import enginefacade
from oslo_db.sqlalchemy import provision
from oslo_db.sqlalchemy import session
from neutron.db.migration import cli as migration
# Import all data models
@ -68,112 +65,7 @@ def create_request(path, body, content_type, method='GET',
return req
class SqlFixture(fixtures.Fixture):
"""Base of a fixture which can create a schema and delete from
its tables.
"""
@classmethod
def _generate_schema(cls, engine):
model_base.BASEV2.metadata.create_all(engine)
def _delete_from_schema(self, engine):
with engine.begin() as conn:
for table in reversed(
model_base.BASEV2.metadata.sorted_tables):
conn.execute(table.delete())
def _init_resources(self):
raise NotImplementedError()
def _setUp(self):
self._init_resources()
# check if the fixtures failed to get
# an engine. The test setUp() itself should also be checking
# this and raising skipTest.
if not hasattr(self, 'engine'):
return
engine = self.engine
self.addCleanup(lambda: self._delete_from_schema(engine))
self.sessionmaker = session.get_maker(engine)
_restore_factory = db_api.get_context_manager()._root_factory
self.enginefacade_factory = enginefacade._TestTransactionFactory(
self.engine, self.sessionmaker, from_factory=_restore_factory,
apply_global=False)
db_api.get_context_manager()._root_factory = self.enginefacade_factory
engine = db_api.CONTEXT_WRITER.get_engine()
self.addCleanup(
lambda: setattr(
db_api.get_context_manager(),
"_root_factory", _restore_factory))
self.useFixture(EnableSQLiteFKsFixture(engine))
class EnableSQLiteFKsFixture(fixtures.Fixture):
"""Turn SQLite PRAGMA foreign keys on and off for tests.
FIXME(zzzeek): figure out some way to get oslo.db test_base to honor
oslo_db.engines.create_engine() arguments like sqlite_fks as well
as handling that it needs to be turned off during drops.
"""
def __init__(self, engine):
self.engine = engine
def _setUp(self):
if self.engine.name == 'sqlite':
self.engine.execute("PRAGMA foreign_keys=ON")
def disable_fks():
with self.engine.connect() as conn:
conn.connection.rollback()
conn.execute("PRAGMA foreign_keys=OFF")
self.addCleanup(disable_fks)
class StaticSqlFixture(SqlFixture):
"""Fixture which keeps a single sqlite memory database at the global
scope.
"""
_GLOBAL_RESOURCES = False
@classmethod
def _init_resources(cls):
# this is a classlevel version of what testresources
# does w/ the resources attribute as well as the
# setUpResources() step (which requires a test instance, that
# SqlFixture does not have). Because this is a SQLite memory
# database, we don't actually tear it down, so we can keep
# it running throughout all tests.
if cls._GLOBAL_RESOURCES:
return
else:
cls._GLOBAL_RESOURCES = True
cls.schema_resource = provision.SchemaResource(
provision.DatabaseResource(
"sqlite", db_api.get_context_manager()),
cls._generate_schema, teardown=False)
dependency_resources = {}
for name, resource in cls.schema_resource.resources:
dependency_resources[name] = resource.getResource()
cls.schema_resource.make(dependency_resources)
cls.engine = dependency_resources['database'].engine
class StaticSqlFixtureNoSchema(SqlFixture):
class StaticSqlFixtureNoSchema(lib_fixtures.SqlFixture):
"""Fixture which keeps a single sqlite memory database at the global
scope
@ -198,7 +90,7 @@ class StaticSqlFixtureNoSchema(SqlFixture):
pass
class OpportunisticSqlFixture(SqlFixture):
class OpportunisticSqlFixture(lib_fixtures.SqlFixture):
"""Fixture which uses testresources with oslo_db provisioning to
check for available backends and optimize test runs.
@ -293,7 +185,7 @@ class BaseSqlTestCase(object):
def _setup_database_fixtures(self):
if self.BUILD_SCHEMA:
fixture = StaticSqlFixture()
fixture = lib_fixtures.StaticSqlFixture()
else:
fixture = StaticSqlFixtureNoSchema()
self.useFixture(fixture)

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