Add flat type driver unittests

Partial-Bug: #1269127

Change-Id: Ib56c5823ddb927d8269cfcdaa8df8b0f78dc5a6e

neutron/tests/unit/ml2/test_type_flat.py

@@ -0,0 +1,98 @@
+# Copyright (c) 2014 Thales Services SAS
+# All Rights Reserved.
+#
+#    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.common import exceptions as exc
+import neutron.db.api as db
+from neutron.plugins.common import constants as p_const
+from neutron.plugins.ml2 import driver_api as api
+from neutron.plugins.ml2.drivers import type_flat
+from neutron.tests import base
+
+
+FLAT_NETWORKS = 'flat_net1, flat_net2'
+
+
+class FlatTypeTest(base.BaseTestCase):
+
+    def setUp(self):
+        super(FlatTypeTest, self).setUp()
+        db.configure_db()
+        self.driver = type_flat.FlatTypeDriver()
+        self.driver._parse_networks(FLAT_NETWORKS)
+        self.session = db.get_session()
+        self.addCleanup(db.clear_db)
+
+    def _get_allocation(self, session, segment):
+        return session.query(type_flat.FlatAllocation).filter_by(
+            physical_network=segment[api.PHYSICAL_NETWORK]).first()
+
+    def test_validate_provider_segment(self):
+        segment = {api.NETWORK_TYPE: p_const.TYPE_FLAT,
+                   api.PHYSICAL_NETWORK: 'flat_net1'}
+        self.driver.validate_provider_segment(segment)
+
+    def test_validate_provider_segment_without_physnet_restriction(self):
+        self.driver._parse_networks('*')
+        segment = {api.NETWORK_TYPE: p_const.TYPE_FLAT,
+                   api.PHYSICAL_NETWORK: 'other_flat_net'}
+        self.driver.validate_provider_segment(segment)
+
+    def test_validate_provider_segment_with_missing_physical_network(self):
+        segment = {api.NETWORK_TYPE: p_const.TYPE_FLAT}
+        self.assertRaises(exc.InvalidInput,
+                          self.driver.validate_provider_segment,
+                          segment)
+
+    def test_validate_provider_segment_with_unsupported_physical_network(self):
+        segment = {api.NETWORK_TYPE: p_const.TYPE_FLAT,
+                   api.PHYSICAL_NETWORK: 'other_flat_net'}
+        self.assertRaises(exc.InvalidInput,
+                          self.driver.validate_provider_segment,
+                          segment)
+
+    def test_validate_provider_segment_with_unallowed_segmentation_id(self):
+        segment = {api.NETWORK_TYPE: p_const.TYPE_FLAT,
+                   api.PHYSICAL_NETWORK: 'flat_net1',
+                   api.SEGMENTATION_ID: 1234}
+        self.assertRaises(exc.InvalidInput,
+                          self.driver.validate_provider_segment,
+                          segment)
+
+    def test_reserve_provider_segment(self):
+        segment = {api.NETWORK_TYPE: p_const.TYPE_FLAT,
+                   api.PHYSICAL_NETWORK: 'flat_net1'}
+        self.driver.reserve_provider_segment(self.session, segment)
+        alloc = self._get_allocation(self.session, segment)
+        self.assertEqual(segment[api.PHYSICAL_NETWORK], alloc.physical_network)
+
+    def test_release_segment(self):
+        segment = {api.NETWORK_TYPE: p_const.TYPE_FLAT,
+                   api.PHYSICAL_NETWORK: 'flat_net1'}
+        self.driver.reserve_provider_segment(self.session, segment)
+        self.driver.release_segment(self.session, segment)
+        alloc = self._get_allocation(self.session, segment)
+        self.assertIsNone(alloc)
+
+    def test_reserve_provider_segment_already_reserved(self):
+        segment = {api.NETWORK_TYPE: p_const.TYPE_FLAT,
+                   api.PHYSICAL_NETWORK: 'flat_net1'}
+        self.driver.reserve_provider_segment(self.session, segment)
+        self.assertRaises(exc.FlatNetworkInUse,
+                          self.driver.reserve_provider_segment,
+                          self.session, segment)
+
+    def test_allocate_tenant_segment(self):
+        observed = self.driver.allocate_tenant_segment(self.session)
+        self.assertIsNone(observed)