Unit test cases for quota_db.py

This commit adds unit test cases with 100% coverage for the quotas
database implementation in neutron/db/quota_db.py

Closes-Bug: #1312310

Change-Id: Icc08132369e88a2f83fe57f524232e94ec4db702

diff --git a/neutron/tests/unit/db/test_quota_db.py b/neutron/tests/unit/db/test_quota_db.py
new file mode 100644 (file)
index 0000000..813f016
--- /dev/null
+++ b/neutron/tests/unit/db/test_quota_db.py
@@ -0,0 +1,143 @@
+# Copyright (c) 2014 OpenStack Foundation.
+#
+# 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.
+#
+# @author: Sergio Cazzolato, Intel
+
+from neutron.common import exceptions
+from neutron import context
+from neutron.db import api as db
+from neutron.db import db_base_plugin_v2 as base_plugin
+from neutron.db import quota_db
+from neutron.tests import base
+
+
+class FakePlugin(base_plugin.NeutronDbPluginV2, quota_db.DbQuotaDriver):
+    """A fake plugin class containing all DB methods."""
+
+
+class TestResource(object):
+    """Describe a test resource for quota checking."""
+
+    def __init__(self, name, default):
+        self.name = name
+        self.quota = default
+
+    @property
+    def default(self):
+        return self.quota
+
+PROJECT = 'prj_test'
+RESOURCE = 'res_test'
+
+
+class TestDbQuotaDriver(base.BaseTestCase):
+    def setUp(self):
+        super(TestDbQuotaDriver, self).setUp()
+        self.plugin = FakePlugin()
+        self.context = context.get_admin_context()
+        self.addCleanup(db.clear_db)
+
+    def test_create_quota_limit(self):
+        defaults = {RESOURCE: TestResource(RESOURCE, 4)}
+
+        self.plugin.update_quota_limit(self.context, PROJECT, RESOURCE, 2)
+        quotas = self.plugin.get_tenant_quotas(self.context, defaults, PROJECT)
+        self.assertEqual(2, quotas[RESOURCE])
+
+    def test_update_quota_limit(self):
+        defaults = {RESOURCE: TestResource(RESOURCE, 4)}
+
+        self.plugin.update_quota_limit(self.context, PROJECT, RESOURCE, 2)
+        self.plugin.update_quota_limit(self.context, PROJECT, RESOURCE, 3)
+        quotas = self.plugin.get_tenant_quotas(self.context, defaults, PROJECT)
+        self.assertEqual(3, quotas[RESOURCE])
+
+    def test_delete_tenant_quota_restores_default_limit(self):
+        defaults = {RESOURCE: TestResource(RESOURCE, 4)}
+
+        self.plugin.update_quota_limit(self.context, PROJECT, RESOURCE, 2)
+        self.plugin.delete_tenant_quota(self.context, PROJECT)
+        quotas = self.plugin.get_tenant_quotas(self.context, defaults, PROJECT)
+        self.assertEqual(4, quotas[RESOURCE])
+
+    def test_get_all_quotas(self):
+        project_1 = 'prj_test_1'
+        project_2 = 'prj_test_2'
+        resource_1 = 'res_test_1'
+        resource_2 = 'res_test_2'
+
+        resources = {resource_1: TestResource(resource_1, 1),
+                     resource_2: TestResource(resource_2, 1)}
+
+        self.plugin.update_quota_limit(self.context, project_1, resource_1, 2)
+        self.plugin.update_quota_limit(self.context, project_2, resource_2, 2)
+        quotas = self.plugin.get_all_quotas(self.context, resources)
+
+        self.assertEqual(2, len(quotas))
+
+        self.assertEqual(3, len(quotas[0]))
+        self.assertEqual(project_1, quotas[0]['tenant_id'])
+        self.assertEqual(2, quotas[0][resource_1])
+        self.assertEqual(1, quotas[0][resource_2])
+
+        self.assertEqual(3, len(quotas[1]))
+        self.assertEqual(project_2, quotas[1]['tenant_id'])
+        self.assertEqual(1, quotas[1][resource_1])
+        self.assertEqual(2, quotas[1][resource_2])
+
+    def test_limit_check(self):
+        resources = {RESOURCE: TestResource(RESOURCE, 2)}
+        values = {RESOURCE: 1}
+
+        self.plugin.update_quota_limit(self.context, PROJECT, RESOURCE, 2)
+        self.plugin.limit_check(self.context, PROJECT, resources, values)
+
+    def test_limit_check_over_quota(self):
+        resources = {RESOURCE: TestResource(RESOURCE, 2)}
+        values = {RESOURCE: 3}
+
+        self.plugin.update_quota_limit(self.context, PROJECT, RESOURCE, 2)
+
+        self.assertRaises(exceptions.OverQuota, self.plugin.limit_check,
+                          context.get_admin_context(), PROJECT, resources,
+                          values)
+
+    def test_limit_check_equals_to_quota(self):
+        resources = {RESOURCE: TestResource(RESOURCE, 2)}
+        values = {RESOURCE: 2}
+
+        self.plugin.update_quota_limit(self.context, PROJECT, RESOURCE, 2)
+        self.plugin.limit_check(self.context, PROJECT, resources, values)
+
+    def test_limit_check_value_lower_than_zero(self):
+        resources = {RESOURCE: TestResource(RESOURCE, 2)}
+        values = {RESOURCE: -1}
+
+        self.plugin.update_quota_limit(self.context, PROJECT, RESOURCE, 2)
+        self.assertRaises(exceptions.InvalidQuotaValue,
+                          self.plugin.limit_check, context.get_admin_context(),
+                          PROJECT, resources, values)
+
+    def test_limit_check_wrong_values_size(self):
+        resource_1 = 'res_test_1'
+        resource_2 = 'res_test_2'
+
+        resources = {resource_1: TestResource(resource_1, 2)}
+        values = {resource_1: 1, resource_2: 1}
+
+        self.plugin.update_quota_limit(self.context, PROJECT, resource_1, 2)
+        self.assertRaises(exceptions.QuotaResourceUnknown,
+                          self.plugin.limit_check, context.get_admin_context(),
+                          PROJECT, resources, values)