Enable some volumes v2 tests by sharing codes part2

1. Rename volumes v1 client to a base client, then create
   v1 and v2 clients inheriting base client.
2. create volumes v2 tests using the existent test class.
3. create a new test class for v1, which inherits v2.

This patch includes the following volumes tests:
- test_availability_zone.py
- test_extensions.py

Partially implements: blueprint cinder-v2-api-tests

Change-Id: Ie21ebc184710e9abe894cdc20ed7a39aacc94ded
diff --git a/tempest/api/volume/base.py b/tempest/api/volume/base.py
index abf3c6b..b7de767 100644
--- a/tempest/api/volume/base.py
+++ b/tempest/api/volume/base.py
@@ -71,6 +71,9 @@
                 msg = "Volume API v2 is disabled"
                 raise cls.skipException(msg)
             cls.volumes_client = cls.os.volumes_v2_client
+            cls.volumes_extension_client = cls.os.volumes_v2_extension_client
+            cls.availability_zone_client = (
+                cls.os.volume_v2_availability_zone_client)
             # Special fields and resp code for cinder v2
             cls.special_fields = {'name_field': 'name',
                                   'descrip_field': 'description',
diff --git a/tempest/api/volume/test_availability_zone.py b/tempest/api/volume/test_availability_zone.py
index fe8f96e..25b7b85 100644
--- a/tempest/api/volume/test_availability_zone.py
+++ b/tempest/api/volume/test_availability_zone.py
@@ -17,16 +17,15 @@
 from tempest import test
 
 
-class AvailabilityZoneTestJSON(base.BaseVolumeV1Test):
+class AvailabilityZoneV2TestJSON(base.BaseVolumeTest):
 
     """
-    Tests Availability Zone API List
+    Tests Availability Zone V2 API List
     """
-    _interface = 'json'
 
     @classmethod
     def setUpClass(cls):
-        super(AvailabilityZoneTestJSON, cls).setUpClass()
+        super(AvailabilityZoneV2TestJSON, cls).setUpClass()
         cls.client = cls.availability_zone_client
 
     @test.attr(type='gate')
@@ -37,5 +36,13 @@
         self.assertTrue(len(availability_zone) > 0)
 
 
-class AvailabilityZoneTestXML(AvailabilityZoneTestJSON):
+class AvailabilityZoneV2TestXML(AvailabilityZoneV2TestJSON):
+    _interface = 'xml'
+
+
+class AvailabilityZoneV1TestJSON(AvailabilityZoneV2TestJSON):
+    _api_version = 1
+
+
+class AvailabilityZoneV1TestXML(AvailabilityZoneV1TestJSON):
     _interface = 'xml'
diff --git a/tempest/api/volume/test_extensions.py b/tempest/api/volume/test_extensions.py
index ce019a2..ff00dd1 100644
--- a/tempest/api/volume/test_extensions.py
+++ b/tempest/api/volume/test_extensions.py
@@ -25,8 +25,7 @@
 LOG = logging.getLogger(__name__)
 
 
-class ExtensionsTestJSON(base.BaseVolumeV1Test):
-    _interface = 'json'
+class ExtensionsV2TestJSON(base.BaseVolumeTest):
 
     @test.attr(type='gate')
     def test_list_extensions(self):
@@ -46,5 +45,13 @@
             raise self.skipException('There are not any extensions configured')
 
 
-class ExtensionsTestXML(ExtensionsTestJSON):
+class ExtensionsV2TestXML(ExtensionsV2TestJSON):
+    _interface = 'xml'
+
+
+class ExtensionsV1TestJSON(ExtensionsV2TestJSON):
+    _api_version = 1
+
+
+class ExtensionsV1TestXML(ExtensionsV1TestJSON):
     _interface = 'xml'
diff --git a/tempest/clients.py b/tempest/clients.py
index 4e2205e..276b702 100644
--- a/tempest/clients.py
+++ b/tempest/clients.py
@@ -179,7 +179,15 @@
     ExtensionsClientJSON as VolumeExtensionClientJSON
 from tempest.services.volume.json.snapshots_client import SnapshotsClientJSON
 from tempest.services.volume.json.volumes_client import VolumesClientJSON
+from tempest.services.volume.v2.json.availability_zone_client import \
+    VolumeV2AvailabilityZoneClientJSON
+from tempest.services.volume.v2.json.extensions_client import \
+    ExtensionsV2ClientJSON as VolumeV2ExtensionClientJSON
 from tempest.services.volume.v2.json.volumes_client import VolumesV2ClientJSON
+from tempest.services.volume.v2.xml.availability_zone_client import \
+    VolumeV2AvailabilityZoneClientXML
+from tempest.services.volume.v2.xml.extensions_client import \
+    ExtensionsV2ClientXML as VolumeV2ExtensionClientXML
 from tempest.services.volume.v2.xml.volumes_client import VolumesV2ClientXML
 from tempest.services.volume.xml.admin.volume_hosts_client import \
     VolumeHostsClientXML
@@ -268,6 +276,8 @@
                 self.auth_provider)
             self.volumes_extension_client = VolumeExtensionClientXML(
                 self.auth_provider)
+            self.volumes_v2_extension_client = VolumeV2ExtensionClientXML(
+                self.auth_provider)
             if CONF.service_available.ceilometer:
                 self.telemetry_client = TelemetryClientXML(
                     self.auth_provider)
@@ -275,6 +285,8 @@
             self.token_v3_client = V3TokenClientXML()
             self.volume_availability_zone_client = \
                 VolumeAvailabilityZoneClientXML(self.auth_provider)
+            self.volume_v2_availability_zone_client = \
+                VolumeV2AvailabilityZoneClientXML(self.auth_provider)
 
         elif self.interface == 'json':
             self.certificates_client = CertificatesClientJSON(
@@ -360,6 +372,8 @@
                 self.auth_provider)
             self.volumes_extension_client = VolumeExtensionClientJSON(
                 self.auth_provider)
+            self.volumes_v2_extension_client = VolumeV2ExtensionClientJSON(
+                self.auth_provider)
             self.hosts_v3_client = HostsV3ClientJSON(self.auth_provider)
             self.database_flavors_client = DatabaseFlavorsClientJSON(
                 self.auth_provider)
@@ -376,6 +390,8 @@
             self.negative_client.service = service
             self.volume_availability_zone_client = \
                 VolumeAvailabilityZoneClientJSON(self.auth_provider)
+            self.volume_v2_availability_zone_client = \
+                VolumeV2AvailabilityZoneClientJSON(self.auth_provider)
 
         else:
             msg = "Unsupported interface type `%s'" % interface
diff --git a/tempest/services/volume/json/availability_zone_client.py b/tempest/services/volume/json/availability_zone_client.py
index 6839d3a..f2e7c5c 100644
--- a/tempest/services/volume/json/availability_zone_client.py
+++ b/tempest/services/volume/json/availability_zone_client.py
@@ -21,10 +21,10 @@
 CONF = config.CONF
 
 
-class VolumeAvailabilityZoneClientJSON(rest_client.RestClient):
+class BaseVolumeAvailabilityZoneClientJSON(rest_client.RestClient):
 
     def __init__(self, auth_provider):
-        super(VolumeAvailabilityZoneClientJSON, self).__init__(
+        super(BaseVolumeAvailabilityZoneClientJSON, self).__init__(
             auth_provider)
         self.service = CONF.volume.catalog_type
 
@@ -32,3 +32,9 @@
         resp, body = self.get('os-availability-zone')
         body = json.loads(body)
         return resp, body['availabilityZoneInfo']
+
+
+class VolumeAvailabilityZoneClientJSON(BaseVolumeAvailabilityZoneClientJSON):
+    """
+    Volume V1 availability zone client.
+    """
diff --git a/tempest/services/volume/json/extensions_client.py b/tempest/services/volume/json/extensions_client.py
index 9e182ea..e3ff00b 100644
--- a/tempest/services/volume/json/extensions_client.py
+++ b/tempest/services/volume/json/extensions_client.py
@@ -21,10 +21,10 @@
 CONF = config.CONF
 
 
-class ExtensionsClientJSON(rest_client.RestClient):
+class BaseExtensionsClientJSON(rest_client.RestClient):
 
     def __init__(self, auth_provider):
-        super(ExtensionsClientJSON, self).__init__(auth_provider)
+        super(BaseExtensionsClientJSON, self).__init__(auth_provider)
         self.service = CONF.volume.catalog_type
 
     def list_extensions(self):
@@ -32,3 +32,9 @@
         resp, body = self.get(url)
         body = json.loads(body)
         return resp, body['extensions']
+
+
+class ExtensionsClientJSON(BaseExtensionsClientJSON):
+    """
+    Volume V1 extensions client.
+    """
diff --git a/tempest/services/volume/v2/json/availability_zone_client.py b/tempest/services/volume/v2/json/availability_zone_client.py
new file mode 100644
index 0000000..047ba1b
--- /dev/null
+++ b/tempest/services/volume/v2/json/availability_zone_client.py
@@ -0,0 +1,26 @@
+# Copyright 2014 IBM Corp.
+# 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.services.volume.json import availability_zone_client
+
+
+class VolumeV2AvailabilityZoneClientJSON(
+        availability_zone_client.BaseVolumeAvailabilityZoneClientJSON):
+
+    def __init__(self, auth_provider):
+        super(VolumeV2AvailabilityZoneClientJSON, self).__init__(
+            auth_provider)
+
+        self.api_version = "v2"
diff --git a/tempest/services/volume/v2/json/extensions_client.py b/tempest/services/volume/v2/json/extensions_client.py
new file mode 100644
index 0000000..cc5244c
--- /dev/null
+++ b/tempest/services/volume/v2/json/extensions_client.py
@@ -0,0 +1,24 @@
+# Copyright 2014 IBM Corp.
+# 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.services.volume.json import extensions_client
+
+
+class ExtensionsV2ClientJSON(extensions_client.BaseExtensionsClientJSON):
+
+    def __init__(self, auth_provider):
+        super(ExtensionsV2ClientJSON, self).__init__(auth_provider)
+
+        self.api_version = "v2"
diff --git a/tempest/services/volume/v2/xml/availability_zone_client.py b/tempest/services/volume/v2/xml/availability_zone_client.py
new file mode 100644
index 0000000..68ca39b
--- /dev/null
+++ b/tempest/services/volume/v2/xml/availability_zone_client.py
@@ -0,0 +1,26 @@
+# Copyright 2014 IBM Corp.
+# 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.services.volume.xml import availability_zone_client
+
+
+class VolumeV2AvailabilityZoneClientXML(
+        availability_zone_client.BaseVolumeAvailabilityZoneClientXML):
+
+    def __init__(self, auth_provider):
+        super(VolumeV2AvailabilityZoneClientXML, self).__init__(
+            auth_provider)
+
+        self.api_version = "v2"
diff --git a/tempest/services/volume/v2/xml/extensions_client.py b/tempest/services/volume/v2/xml/extensions_client.py
new file mode 100644
index 0000000..13f333c
--- /dev/null
+++ b/tempest/services/volume/v2/xml/extensions_client.py
@@ -0,0 +1,24 @@
+# Copyright 2014 IBM Corp.
+# 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.services.volume.xml import extensions_client
+
+
+class ExtensionsV2ClientXML(extensions_client.BaseExtensionsClientXML):
+
+    def __init__(self, auth_provider):
+        super(ExtensionsV2ClientXML, self).__init__(auth_provider)
+
+        self.api_version = "v2"
diff --git a/tempest/services/volume/xml/availability_zone_client.py b/tempest/services/volume/xml/availability_zone_client.py
index e4a004a..a883ef5 100644
--- a/tempest/services/volume/xml/availability_zone_client.py
+++ b/tempest/services/volume/xml/availability_zone_client.py
@@ -22,11 +22,11 @@
 CONF = config.CONF
 
 
-class VolumeAvailabilityZoneClientXML(rest_client.RestClient):
+class BaseVolumeAvailabilityZoneClientXML(rest_client.RestClient):
     TYPE = "xml"
 
     def __init__(self, auth_provider):
-        super(VolumeAvailabilityZoneClientXML, self).__init__(
+        super(BaseVolumeAvailabilityZoneClientXML, self).__init__(
             auth_provider)
         self.service = CONF.volume.catalog_type
 
@@ -37,3 +37,9 @@
         resp, body = self.get('os-availability-zone')
         availability_zone = self._parse_array(etree.fromstring(body))
         return resp, availability_zone
+
+
+class VolumeAvailabilityZoneClientXML(BaseVolumeAvailabilityZoneClientXML):
+    """
+    Volume V1 availability zone client.
+    """
diff --git a/tempest/services/volume/xml/extensions_client.py b/tempest/services/volume/xml/extensions_client.py
index 2986fcd..fe8b7cb 100644
--- a/tempest/services/volume/xml/extensions_client.py
+++ b/tempest/services/volume/xml/extensions_client.py
@@ -22,11 +22,11 @@
 CONF = config.CONF
 
 
-class ExtensionsClientXML(rest_client.RestClient):
+class BaseExtensionsClientXML(rest_client.RestClient):
     TYPE = "xml"
 
     def __init__(self, auth_provider):
-        super(ExtensionsClientXML, self).__init__(auth_provider)
+        super(BaseExtensionsClientXML, self).__init__(auth_provider)
         self.service = CONF.volume.catalog_type
 
     def _parse_array(self, node):
@@ -40,3 +40,9 @@
         resp, body = self.get(url)
         body = self._parse_array(etree.fromstring(body))
         return resp, body
+
+
+class ExtensionsClientXML(BaseExtensionsClientXML):
+    """
+    Volume V1 extensions client.
+    """