Add model sync test

As neutron-lbaas doesn't have functional tests right now,
add this to unit tests following the convention.
(networking-cisco and networking-midonet)

Note: the Cisco copyright notice in test_migrations is intended.
It came from networking-cisco via networking-midonet.

Closes-Bug: #1549699
Change-Id: I30998407eae04d28a3a653430f8c90711b6c0235

neutron_lbaas/db/models/head.py

@@ -0,0 +1,22 @@
+# Copyright 2016 Midokura SARL
+#
+# 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 neutron.db.migration.models import head
+
+import neutron_lbaas.db.loadbalancer.loadbalancer_db  # noqa
+import neutron_lbaas.db.loadbalancer.models  # noqa
+
+
+def get_metadata():
+    return head.model_base.BASEV2.metadata

neutron_lbaas/tests/unit/db/loadbalancer/test_migrations.py

@@ -0,0 +1,61 @@
+# Copyright (c) 2015 Cisco Systems, Inc.
+#
+#    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 oslo_config import cfg
+
+from neutron.db.migration.alembic_migrations import external
+from neutron.db.migration import cli as migration
+from neutron.tests.common import base
+from neutron.tests.functional.db import test_migrations
+
+from neutron_lbaas.db.models import head
+
+# EXTERNAL_TABLES should contain all names of tables that are not related to
+# current repo.
+EXTERNAL_TABLES = set(external.TABLES) - set(external.LBAAS_TABLES)
+VERSION_TABLE = 'alembic_version_lbaas'
+
+
+class _TestModelsMigrationsLBAAS(test_migrations._TestModelsMigrations):
+    # TODO(yamamoto): Move this test to functional, once neutron-lbaas
+    # gets a functional job.
+
+    def db_sync(self, engine):
+        cfg.CONF.set_override('connection', engine.url, group='database')
+        for conf in migration.get_alembic_configs():
+            self.alembic_config = conf
+            self.alembic_config.neutron_config = cfg.CONF
+            migration.do_alembic_command(conf, 'upgrade', 'heads')
+
+    def get_metadata(self):
+        return head.get_metadata()
+
+    def include_object(self, object_, name, type_, reflected, compare_to):
+        if type_ == 'table' and (name.startswith('alembic') or
+                                 name == VERSION_TABLE or
+                                 name in EXTERNAL_TABLES):
+            return False
+        if type_ == 'index' and reflected and name.startswith("idx_autoinc_"):
+            return False
+        return True
+
+
+class TestModelsMigrationsMysql(_TestModelsMigrationsLBAAS,
+                                base.MySQLTestCase):
+    pass
+
+
+class TestModelsMigrationsPostgresql(_TestModelsMigrationsLBAAS,
+                                     base.PostgreSQLTestCase):
+    pass

test-requirements.txt

@@ -14,8 +14,11 @@ oslo.concurrency>=3.5.0 # Apache-2.0
 oslotest>=1.10.0 # Apache-2.0
 tempest-lib>=0.14.0 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD
+testresources>=0.2.4 # Apache-2.0/BSD
 testtools>=1.4.0 # MIT
 testscenarios>=0.4 # Apache-2.0/BSD
 WebOb>=1.2.3 # MIT
 WebTest>=2.0 # MIT
 reno>=0.1.1 # Apache2
+# Needed to run DB commands in virtualenvs
+PyMySQL>=0.6.2  # MIT License