Verify "list interfaces" Nova v2/v3 API response attributes

This patch adds checks whether a response of
Nova list interfaces v2/v3 API includes the attributes
to block the backward incompatibility change in the future.

The response body of v2 API is the following:
{
    "interfaceAttachments": [
        {
            "port_state": "ACTIVE",
            "fixed_ips": [
                {
                    "subnet_id": "66175fc3-1f21-49c9-84e5-f0eca1831b20",
                    "ip_address": "10.0.0.2"
                }
            ],
            "port_id": "d7a42d37-78ec-4f18-8a9c-1b37c206a733",
            "net_id": "18095bfd-0ab8-4207-99bd-dbdc373bd670",
            "mac_addr": "fa:16:3e:fc:65:ac"
        }
    ]
}

The response body of v3 API is the following:
{
    "interface_attachments": [
        {
            "port_state": "ACTIVE",
            "fixed_ips": [
                {
                    "subnet_id": "66175fc3-1f21-49c9-84e5-f0eca1831b20",
                    "ip_address": "10.0.0.2"
                }
            ],
            "port_id": "d7a42d37-78ec-4f18-8a9c-1b37c206a733",
            "net_id": "18095bfd-0ab8-4207-99bd-dbdc373bd670",
            "mac_addr": "fa:16:3e:fc:65:ac"
        }
    ]
}

Partially implements blueprint nova-api-attribute-test

Change-Id: I44d6ed17db563143be57564780beea8343bd170e
diff --git a/tempest/api_schema/compute/interfaces.py b/tempest/api_schema/compute/interfaces.py
index 1e15c18..79a8f42 100644
--- a/tempest/api_schema/compute/interfaces.py
+++ b/tempest/api_schema/compute/interfaces.py
@@ -12,6 +12,36 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest.api_schema.compute import parameter_types
+
 delete_interface = {
     'status_code': [202]
 }
+
+interface_common_info = {
+    'type': 'object',
+    'properties': {
+        'port_state': {'type': 'string'},
+        'fixed_ips': {
+            'type': 'array',
+            'items': {
+                'type': 'object',
+                'properties': {
+                    'subnet_id': {
+                        'type': 'string',
+                        'format': 'uuid'
+                    },
+                    'ip_address': {
+                        'type': 'string',
+                        'format': 'ipv4'
+                    }
+                },
+                'required': ['subnet_id', 'ip_address']
+            }
+        },
+        'port_id': {'type': 'string', 'format': 'uuid'},
+        'net_id': {'type': 'string', 'format': 'uuid'},
+        'mac_addr': parameter_types.mac_address
+    },
+    'required': ['port_state', 'fixed_ips', 'port_id', 'net_id', 'mac_addr']
+}
diff --git a/tempest/api_schema/compute/v2/interfaces.py b/tempest/api_schema/compute/v2/interfaces.py
new file mode 100644
index 0000000..7fca791
--- /dev/null
+++ b/tempest/api_schema/compute/v2/interfaces.py
@@ -0,0 +1,29 @@
+# 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_schema.compute import interfaces as common_schema
+
+list_interfaces = {
+    'status_code': [200],
+    'response_body': {
+        'type': 'object',
+        'properties': {
+            'interfaceAttachments': {
+                'type': 'array',
+                'items': common_schema.interface_common_info
+            }
+        },
+        'required': ['interfaceAttachments']
+    }
+}
diff --git a/tempest/api_schema/compute/v3/interfaces.py b/tempest/api_schema/compute/v3/interfaces.py
new file mode 100644
index 0000000..5e1cee2
--- /dev/null
+++ b/tempest/api_schema/compute/v3/interfaces.py
@@ -0,0 +1,29 @@
+# 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_schema.compute import interfaces as common_schema
+
+list_interfaces = {
+    'status_code': [200],
+    'response_body': {
+        'type': 'object',
+        'properties': {
+            'interface_attachments': {
+                'type': 'array',
+                'items': common_schema.interface_common_info
+            }
+        },
+        'required': ['interface_attachments']
+    }
+}
diff --git a/tempest/services/compute/json/interfaces_client.py b/tempest/services/compute/json/interfaces_client.py
index 2f165a2..8d51123 100644
--- a/tempest/services/compute/json/interfaces_client.py
+++ b/tempest/services/compute/json/interfaces_client.py
@@ -17,6 +17,7 @@
 import time
 
 from tempest.api_schema.compute import interfaces as common_schema
+from tempest.api_schema.compute.v2 import interfaces as schema
 from tempest.common import rest_client
 from tempest import config
 from tempest import exceptions
@@ -33,6 +34,7 @@
     def list_interfaces(self, server):
         resp, body = self.get('servers/%s/os-interface' % server)
         body = json.loads(body)
+        self.validate_response(schema.list_interfaces, resp, body)
         return resp, body['interfaceAttachments']
 
     def create_interface(self, server, port_id=None, network_id=None,
diff --git a/tempest/services/compute/v3/json/interfaces_client.py b/tempest/services/compute/v3/json/interfaces_client.py
index 25c8db7..77b3179 100644
--- a/tempest/services/compute/v3/json/interfaces_client.py
+++ b/tempest/services/compute/v3/json/interfaces_client.py
@@ -17,6 +17,7 @@
 import time
 
 from tempest.api_schema.compute import interfaces as common_schema
+from tempest.api_schema.compute.v3 import interfaces as schema
 from tempest.common import rest_client
 from tempest import config
 from tempest import exceptions
@@ -33,6 +34,7 @@
     def list_interfaces(self, server):
         resp, body = self.get('servers/%s/os-attach-interfaces' % server)
         body = json.loads(body)
+        self.validate_response(schema.list_interfaces, resp, body)
         return resp, body['interface_attachments']
 
     def create_interface(self, server, port_id=None, network_id=None,