diff --git a/patrole_tempest_plugin/tests/api/volume/test_quota_classes_rbac.py b/patrole_tempest_plugin/tests/api/volume/test_quota_classes_rbac.py
new file mode 100644
index 0000000..44c0d3e
--- /dev/null
+++ b/patrole_tempest_plugin/tests/api/volume/test_quota_classes_rbac.py
@@ -0,0 +1,60 @@
+# Copyright 2017 AT&T Corporation.
+# 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 tempest.lib.common.utils import data_utils
+from tempest.lib import decorators
+from tempest import test
+
+from patrole_tempest_plugin import rbac_rule_validation
+from patrole_tempest_plugin.tests.api.volume import rbac_base
+
+
+class QuotaClassesRbacTest(rbac_base.BaseVolumeRbacTest):
+
+    @classmethod
+    def skip_checks(cls):
+        super(QuotaClassesRbacTest, cls).skip_checks()
+        if not test.is_extension_enabled('os-quota-class-sets', 'volume'):
+            msg = ("%s skipped as os-quota-class-sets not enabled."
+                   % cls.__name__)
+            raise cls.skipException(msg)
+
+    @classmethod
+    def setup_clients(cls):
+        super(QuotaClassesRbacTest, cls).setup_clients()
+        cls.client = cls.os_primary.quota_classes_client
+        cls.quota_name = data_utils.rand_name(cls.__name__ + '-QuotaClass')
+
+    @decorators.idempotent_id('1a060def-2b43-4534-97f5-5eadbbe8c726')
+    @rbac_rule_validation.action(service="cinder",
+                                 rule="volume_extension:quota_classes")
+    def test_show_quota_class_set(self):
+        self.rbac_utils.switch_role(self, toggle_rbac_role=True)
+        self.client.show_quota_class_set(self.quota_name)['quota_class_set']
+
+    @decorators.idempotent_id('72159478-23a7-4c75-989f-6bac609eca62')
+    @rbac_rule_validation.action(service="cinder",
+                                 rule="volume_extension:quota_classes")
+    def test_update_quota_class_set(self):
+        quota_class_set = self.client.show_quota_class_set(self.quota_name)[
+            'quota_class_set']
+        quota_class_set.pop('id')
+
+        self.rbac_utils.switch_role(self, toggle_rbac_role=True)
+        self.client.update_quota_class_set(self.quota_name, **quota_class_set)
+
+
+class QuotaClassesV3RbacTest(QuotaClassesRbacTest):
+    _api_version = 3
diff --git a/releasenotes/notes/add-quota-classes-tests-3e61e671f6e131df.yaml b/releasenotes/notes/add-quota-classes-tests-3e61e671f6e131df.yaml
new file mode 100644
index 0000000..656f6a1
--- /dev/null
+++ b/releasenotes/notes/add-quota-classes-tests-3e61e671f6e131df.yaml
@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Add RBAC tests for cinder os-quota-class-sets API, which cover the
+    policy action "volume_extension:quota_classes".