diff --git a/REVIEWING.rst b/REVIEWING.rst
index 676a217..cfe7f4c 100644
--- a/REVIEWING.rst
+++ b/REVIEWING.rst
@@ -13,6 +13,13 @@
 it. Tests which aren't executed either because of configuration or skips should
 not be accepted.
 
+If a new test is added that depends on a new config option (like a feature
+flag), the commit message must reference a change in DevStack or DevStack-Gate
+that enables the execution of this newly introduced test. This reference could
+either be a `Cross-Repository Dependency <http://docs.openstack.org/infra/
+manual/developers.html#cross-repository-dependencies>`_ or a simple link
+to a Gerrit review.
+
 
 Unit Tests
 ----------
diff --git a/requirements.txt b/requirements.txt
index 4af8bb3..fa6c413 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,6 @@
 oslo.utils>=3.16.0 # Apache-2.0
 six>=1.9.0 # MIT
 fixtures>=3.0.0 # Apache-2.0/BSD
-testscenarios>=0.4 # Apache-2.0/BSD
 PyYAML>=3.10.0 # MIT
 python-subunit>=0.0.18 # Apache-2.0/BSD
 stevedore>=1.17.1 # Apache-2.0
diff --git a/tempest/api/compute/volumes/test_attach_volume_negative.py b/tempest/api/compute/volumes/test_attach_volume_negative.py
new file mode 100644
index 0000000..b7fa0fe
--- /dev/null
+++ b/tempest/api/compute/volumes/test_attach_volume_negative.py
@@ -0,0 +1,41 @@
+# Copyright 2016 NEC 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.api.compute import base
+from tempest import config
+from tempest.lib import exceptions as lib_exc
+from tempest import test
+
+CONF = config.CONF
+
+
+class AttachVolumeNegativeTest(base.BaseV2ComputeTest):
+
+    @classmethod
+    def skip_checks(cls):
+        super(AttachVolumeNegativeTest, cls).skip_checks()
+        if not CONF.service_available.cinder:
+            skip_msg = ("%s skipped as Cinder is not available" % cls.__name__)
+            raise cls.skipException(skip_msg)
+
+    @test.idempotent_id('a313b5cd-fbd0-49cc-94de-870e99f763c7')
+    def test_delete_attached_volume(self):
+        server = self.create_test_server(wait_until='ACTIVE')
+        volume = self.create_volume()
+
+        path = "/dev/%s" % CONF.compute.volume_device_name
+        self.attach_volume(server, volume, device=path)
+
+        self.assertRaises(lib_exc.BadRequest,
+                          self.delete_volume, volume['id'])
diff --git a/tempest/api/network/test_networks.py b/tempest/api/network/test_networks.py
index 3825f84..819ef90 100644
--- a/tempest/api/network/test_networks.py
+++ b/tempest/api/network/test_networks.py
@@ -296,7 +296,7 @@
                           subnet_id)
 
         # Since create_subnet adds the subnet to the delete list, and it is
-        # is actually deleted here - this will create and issue, hence remove
+        # actually deleted here - this will create and issue, hence remove
         # it from the list.
         self.subnets.pop()
 
diff --git a/tempest/config.py b/tempest/config.py
index 1940393..8ce38f9 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -245,7 +245,7 @@
                     "projects. If multiple networks are available for a "
                     "project, this is the network which will be used for "
                     "creating servers if tempest does not create a network or "
-                    "s network is not specified elsewhere. It may be used for "
+                    "a network is not specified elsewhere. It may be used for "
                     "ssh validation only if floating IPs are disabled."),
     cfg.StrOpt('catalog_type',
                default='compute',
@@ -347,12 +347,10 @@
                 help="Does the test environment support suspend/resume?"),
     cfg.BoolOpt('cold_migration',
                 default=True,
-                help="Does the test environment support cold migration "
-                     "available?"),
+                help="Does the test environment support cold migration?"),
     cfg.BoolOpt('live_migration',
                 default=True,
-                help="Does the test environment support live migration "
-                     "available?"),
+                help="Does the test environment support live migration?"),
     cfg.BoolOpt('metadata_service',
                 default=True,
                 help="Does the test environment support metadata service? "