1 files changed, 92 insertions, 0 deletions
diff --git a/neutron/tests/unit/plugins/ml2/drivers/ovn/mech_driver/ovsdb/test_ovn_client.py b/neutron/tests/unit/plugins/ml2/drivers/ovn/mech_driver/ovsdb/test_ovn_client.py
new file mode 100644
index 0000000000..11a17657c3
--- /dev/null
+++ b/neutron/tests/unit/plugins/ml2/drivers/ovn/mech_driver/ovsdb/test_ovn_client.py
@@ -0,0 +1,92 @@
+# Copyright 2022 Canonical
+# 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 unittest import mock
+
+from neutron.common.ovn import constants
+from neutron.conf.plugins.ml2.drivers.ovn import ovn_conf
+from neutron.plugins.ml2.drivers.ovn.mech_driver.ovsdb import ovn_client
+from neutron.tests import base
+from neutron.tests.unit.services.logapi.drivers.ovn \
+    import test_driver as test_log_driver
+from neutron_lib.services.logapi import constants as log_const
+
+
+class TestOVNClientBase(base.BaseTestCase):
+
+    def setUp(self):
+        ovn_conf.register_opts()
+        super(TestOVNClientBase, self).setUp()
+        self.nb_idl = mock.MagicMock()
+        self.sb_idl = mock.MagicMock()
+        self.ovn_client = ovn_client.OVNClient(self.nb_idl, self.sb_idl)
+
+
+class TestOVNClientFairMeter(TestOVNClientBase,
+                             test_log_driver.TestOVNDriverBase):
+
+    def test_create_ovn_fair_meter(self):
+        mock_find_rows = mock.Mock()
+        mock_find_rows.execute.return_value = None
+        self.nb_idl.db_find_rows.return_value = mock_find_rows
+        self.ovn_client.create_ovn_fair_meter(self._log_driver.meter_name)
+        self.assertFalse(self.nb_idl.meter_del.called)
+        self.assertTrue(self.nb_idl.meter_add.called)
+        self.nb_idl.meter_add.assert_called_once_with(
+            name=self._log_driver.meter_name,
+            unit="pktps",
+            rate=self.fake_cfg_network_log.rate_limit,
+            fair=True,
+            burst_size=self.fake_cfg_network_log.burst_limit,
+            may_exist=False,
+            external_ids={constants.OVN_DEVICE_OWNER_EXT_ID_KEY:
+                          log_const.LOGGING_PLUGIN})
+
+    def test_create_ovn_fair_meter_unchanged(self):
+        mock_find_rows = mock.Mock()
+        mock_find_rows.execute.return_value = [self._fake_meter()]
+        self.nb_idl.db_find_rows.return_value = mock_find_rows
+        self.nb_idl.lookup.side_effect = lambda table, key, default: (
+            self._fake_meter_band() if key == "test_band" else default)
+        self.ovn_client.create_ovn_fair_meter(self._log_driver.meter_name)
+        self.assertFalse(self.nb_idl.meter_del.called)
+        self.assertFalse(self.nb_idl.meter_add.called)
+
+    def test_create_ovn_fair_meter_changed(self):
+        mock_find_rows = mock.Mock()
+        mock_find_rows.execute.return_value = [self._fake_meter(fair=[False])]
+        self.nb_idl.db_find_rows.return_value = mock_find_rows
+        self.nb_idl.lookup.return_value = self._fake_meter_band()
+        self.ovn_client.create_ovn_fair_meter(self._log_driver.meter_name)
+        self.assertTrue(self.nb_idl.meter_del.called)
+        self.assertTrue(self.nb_idl.meter_add.called)
+
+    def test_create_ovn_fair_meter_band_changed(self):
+        mock_find_rows = mock.Mock()
+        mock_find_rows.execute.return_value = [self._fake_meter()]
+        self.nb_idl.db_find_rows.return_value = mock_find_rows
+        self.nb_idl.lookup.return_value = self._fake_meter_band(rate=666)
+        self.ovn_client.create_ovn_fair_meter(self._log_driver.meter_name)
+        self.assertTrue(self.nb_idl.meter_del.called)
+        self.assertTrue(self.nb_idl.meter_add.called)
+
+    def test_create_ovn_fair_meter_band_missing(self):
+        mock_find_rows = mock.Mock()
+        mock_find_rows.execute.return_value = [self._fake_meter()]
+        self.nb_idl.db_find_rows.return_value = mock_find_rows
+        self.nb_idl.lookup.side_effect = None
+        self.ovn_client.create_ovn_fair_meter(self._log_driver.meter_name)
+        self.assertTrue(self.nb_idl.meter_del.called)
+        self.assertTrue(self.nb_idl.meter_add.called)