tests the Keystone extensions V2 API

This patch adds the JSON/XML clients and tests for
Keystone discover extensions V2 API.

Change-Id: I9e869b9a5ba9302a77027581de7ae970f8d56305
diff --git a/tempest/api/identity/test_extension.py b/tempest/api/identity/test_extension.py
new file mode 100644
index 0000000..67f20f4
--- /dev/null
+++ b/tempest/api/identity/test_extension.py
@@ -0,0 +1,37 @@
+# Copyright 2014 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.identity import base
+from tempest import test
+
+
+class ExtensionTestJSON(base.BaseIdentityV2AdminTest):
+    _interface = 'json'
+
+    @test.attr(type='gate')
+    def test_list_extensions(self):
+        # List all the extensions
+        resp, body = self.non_admin_client.list_extensions()
+        self.assertEqual(200, resp.status)
+        self.assertNotEmpty(body)
+        keys = ['name', 'updated', 'alias', 'links',
+                'namespace', 'description']
+        for value in body:
+            for key in keys:
+                self.assertIn(key, value)
+
+
+class ExtensionTestXML(ExtensionTestJSON):
+    _interface = 'xml'
diff --git a/tempest/services/identity/json/identity_client.py b/tempest/services/identity/json/identity_client.py
index 479a289..b0cab8e 100644
--- a/tempest/services/identity/json/identity_client.py
+++ b/tempest/services/identity/json/identity_client.py
@@ -27,7 +27,8 @@
         self.endpoint_url = 'adminURL'
 
         # Needed for xml service client
-        self.list_tags = ["roles", "tenants", "users", "services"]
+        self.list_tags = ["roles", "tenants", "users", "services",
+                          "extensions"]
 
     def has_admin_extensions(self):
         """
@@ -237,6 +238,12 @@
         resp, body = self.put('users/%s/OS-KSADM/password' % user_id, put_body)
         return resp, self._parse_resp(body)
 
+    def list_extensions(self):
+        """List all the extensions."""
+        resp, body = self.get('/extensions')
+        body = json.loads(body)
+        return resp, body['extensions']['values']
+
 
 class TokenClientJSON(IdentityClientJSON):
 
diff --git a/tempest/services/identity/xml/identity_client.py b/tempest/services/identity/xml/identity_client.py
index b213c1a..886ce7b 100644
--- a/tempest/services/identity/xml/identity_client.py
+++ b/tempest/services/identity/xml/identity_client.py
@@ -127,6 +127,11 @@
                               str(xml.Document(put_body)))
         return resp, self._parse_resp(body)
 
+    def list_extensions(self):
+        """List all the extensions."""
+        resp, body = self.get('/extensions')
+        return resp, self._parse_resp(body)
+
 
 class TokenClientXML(identity_client.TokenClientJSON):
     TYPE = "xml"