diff --git a/cinderclient/tests/functional/test_volume_extend_cli.py b/cinderclient/tests/functional/test_volume_extend_cli.py
new file mode 100644
index 000000000..5e1020c54
--- /dev/null
+++ b/cinderclient/tests/functional/test_volume_extend_cli.py
@@ -0,0 +1,56 @@
+#    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.
+
+import six
+import ddt
+
+from tempest.lib import exceptions
+
+from cinderclient.tests.functional import base
+
+
+@ddt.ddt
+class CinderVolumeExtendNegativeTests(base.ClientTestBase):
+    """Check of cinder volume extend command."""
+
+    def setUp(self):
+        super(CinderVolumeExtendNegativeTests, self).setUp()
+        self.volume = self.object_create('volume', params='1')
+
+    @ddt.data(
+        ('', (r'too few arguments')),
+        ('-1', (r'New size for extend must be greater than current size')),
+        ('0', (r'Invalid input received')),
+        ('size', (r'invalid int value')),
+        ('0.2', (r'invalid int value')),
+        ('2 GB', (r'unrecognized arguments')),
+        ('999999999', (r'VolumeSizeExceedsAvailableQuota')),
+    )
+    @ddt.unpack
+    def test_volume_extend_with_incorrect_size(self, value, ex_text):
+
+        six.assertRaisesRegex(
+            self, exceptions.CommandFailed, ex_text, self.cinder, 'extend',
+            params='{0} {1}'.format(self.volume['id'], value))
+
+    @ddt.data(
+        ('', (r'too few arguments')),
+        ('1234-1234-1234', (r'No volume with a name or ID of')),
+        ('my_volume', (r'No volume with a name or ID of')),
+        ('1234 1234', (r'unrecognized arguments'))
+    )
+    @ddt.unpack
+    def test_volume_extend_with_incorrect_volume_id(self, value, ex_text):
+
+        six.assertRaisesRegex(
+            self, exceptions.CommandFailed, ex_text, self.cinder, 'extend',
+            params='{0} 2'.format(value))