Add support for viewing a single image through v2

* Add image-create command
* Add tests for Image model, Controller.get, and Controller.list
* Related to bp glance-client-v2

Change-Id: Ib98e912a7af0bb570b4fd738733edd9b837d1a06

glanceclient/v2/images.py

@@ -19,6 +19,9 @@ class Image(object):
         self.id = id
         self.name = name
 
+    def iteritems(self):
+        return {'id': self.id, 'name': self.name}.iteritems()
+
 
 class Controller(object):
     def __init__(self, http_client):
@@ -27,3 +30,8 @@ class Controller(object):
     def list(self):
         resp, body = self.http_client.json_request('GET', '/v2/images')
         return [Image(i['id'], i['name']) for i in body['images']]
+
+    def get(self, image_id):
+        url = '/v2/images/%s' % image_id
+        resp, body = self.http_client.json_request('GET', url)
+        return Image(body['image']['id'], body['image']['name'])

glanceclient/v2/shell.py

@@ -24,6 +24,13 @@ def do_image_list(gc, args):
     utils.print_list(images, columns)
 
 
+@utils.arg('id', metavar='<IMAGE_ID>', help='ID of image to describe.')
+def do_image_show(gc, args):
+    """Describe a specific image."""
+    image = gc.images.get(args.id)
+    utils.print_dict(image)
+
+
 @utils.arg('model', metavar='<MODEL>', help='Name of model to describe.')
 def do_explain(gc, args):
     """Describe a specific model."""

tests/v2/test_images.py

@@ -0,0 +1,79 @@
+# Copyright 2012 OpenStack LLC.
+# 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.
+
+import unittest
+
+from glanceclient.v2 import images
+from tests import utils
+
+
+fixtures = {
+    '/v2/images': {
+        'GET': (
+            {},
+            {'images': [
+                {
+                    'id': '3a4560a1-e585-443e-9b39-553b46ec92d1',
+                    'name': 'image-1',
+                },
+                {
+                    'id': '6f99bf80-2ee6-47cf-acfe-1f1fabb7e810',
+                    'name': 'image-2',
+                },
+            ]},
+        ),
+    },
+    '/v2/images/3a4560a1-e585-443e-9b39-553b46ec92d1': {
+        'GET': (
+            {},
+            {
+                'image': {
+                    'id': '3a4560a1-e585-443e-9b39-553b46ec92d1',
+                    'name': 'image-1',
+                },
+            },
+        ),
+    },
+}
+
+
+class TestImage(unittest.TestCase):
+    def test_image_minimum(self):
+        raw_image = {
+            'id': '8a5b2424-9751-498b-925f-66f62747c501',
+            'name': 'image-7',
+        }
+        image = images.Image(**raw_image)
+        self.assertEqual(image.id, '8a5b2424-9751-498b-925f-66f62747c501')
+        self.assertEqual(image.name, 'image-7')
+
+
+class TestController(unittest.TestCase):
+    def setUp(self):
+        super(TestController, self).setUp()
+        self.api = utils.FakeAPI(fixtures)
+        self.controller = images.Controller(self.api)
+
+    def test_list_images(self):
+        images = self.controller.list()
+        self.assertEqual(images[0].id, '3a4560a1-e585-443e-9b39-553b46ec92d1')
+        self.assertEqual(images[0].name, 'image-1')
+        self.assertEqual(images[1].id, '6f99bf80-2ee6-47cf-acfe-1f1fabb7e810')
+        self.assertEqual(images[1].name, 'image-2')
+
+    def test_get_image(self):
+        image = self.controller.get('3a4560a1-e585-443e-9b39-553b46ec92d1')
+        self.assertEqual(image.id, '3a4560a1-e585-443e-9b39-553b46ec92d1')
+        self.assertEqual(image.name, 'image-1')