+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You 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 shutil import rmtree
+from tempfile import mkdtemp
+
+from sqlalchemy import (
+ create_engine,
+ orm,
+ pool,
+ MetaData
+)
+
+
+class TestFileSystem(object):
+
+ def setup_method(self):
+ self.path = mkdtemp('{0}'.format(self.__class__.__name__))
+
+ def teardown_method(self):
+ rmtree(self.path, ignore_errors=True)
+
+
+def release_sqlite_storage(storage):
+ """
+ Drops the tables and clears the session
+ :param storage:
+ :return:
+ """
+ storage._all_api_kwargs['session'].close()
+ MetaData(bind=storage._all_api_kwargs['engine']).drop_all()
+
+
+def init_inmemory_model_storage():
+ uri = 'sqlite:///:memory:'
+ engine_kwargs = dict(connect_args={'check_same_thread': False}, poolclass=pool.StaticPool)
+
+ engine = create_engine(uri, **engine_kwargs)
+ session_factory = orm.sessionmaker(bind=engine)
+
+ return dict(engine=engine, session=session_factory())