Add aggregates scenario test

The basic scenario for aggregates consists in the follow steps:
 - Creates an aggregate within an availability zone
 - Adds a host to the aggregate
 - Checks aggregate details
 - Updates aggregate's name
 - Removes host from aggregate
 - Deletes aggregate

Change-Id: I7a11b11468a5bbe85da4f6154308f7a5336c6919
Partial-bug: #1023131
diff --git a/tempest/scenario/test_aggregates_basic_ops.py b/tempest/scenario/test_aggregates_basic_ops.py
new file mode 100644
index 0000000..3ae9567
--- /dev/null
+++ b/tempest/scenario/test_aggregates_basic_ops.py
@@ -0,0 +1,133 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2013 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.common import tempest_fixtures as fixtures
+from tempest.common.utils.data_utils import rand_name
+from tempest.openstack.common import log as logging
+from tempest.scenario import manager
+from tempest import test
+
+
+LOG = logging.getLogger(__name__)
+
+
+class TestAggregatesBasicOps(manager.OfficialClientTest):
+    """
+    Creates an aggregate within an availability zone
+    Adds a host to the aggregate
+    Checks aggregate details
+    Updates aggregate's name
+    Removes host from aggregate
+    Deletes aggregate
+    """
+    @classmethod
+    def credentials(cls):
+        return cls.admin_credentials()
+
+    def _create_aggregate(self, aggregate_name, availability_zone=None):
+        aggregate = self.compute_client.aggregates.create(aggregate_name,
+                                                          availability_zone)
+        self.assertEqual(aggregate.name, aggregate_name)
+        self.assertEqual(aggregate.availability_zone, availability_zone)
+        self.set_resource(aggregate.id, aggregate)
+        LOG.debug("Aggregate %s created." % (aggregate.name))
+        return aggregate
+
+    def _delete_aggregate(self, aggregate):
+        self.compute_client.aggregates.delete(aggregate.id)
+        self.remove_resource(aggregate.id)
+        LOG.debug("Aggregate %s deleted. " % (aggregate.name))
+
+    def _get_host_name(self):
+        hosts = self.compute_client.hosts.list()
+        self.assertTrue(len(hosts) >= 1)
+        hostname = hosts[0].host_name
+        return hostname
+
+    def _add_host(self, aggregate_name, host):
+        aggregate = self.compute_client.aggregates.add_host(aggregate_name,
+                                                            host)
+        self.assertIn(host, aggregate.hosts)
+        LOG.debug("Host %s added to Aggregate %s." % (host, aggregate.name))
+
+    def _remove_host(self, aggregate_name, host):
+        aggregate = self.compute_client.aggregates.remove_host(aggregate_name,
+                                                               host)
+        self.assertNotIn(host, aggregate.hosts)
+        LOG.debug("Host %s removed to Aggregate %s." % (host, aggregate.name))
+
+    def _check_aggregate_details(self, aggregate, aggregate_name, azone,
+                                 hosts, metadata):
+        aggregate = self.compute_client.aggregates.get(aggregate.id)
+        self.assertEqual(aggregate_name, aggregate.name)
+        self.assertEqual(azone, aggregate.availability_zone)
+        self.assertEqual(aggregate.hosts, hosts)
+        for meta_key in metadata.keys():
+            self.assertIn(meta_key, aggregate.metadata)
+            self.assertEqual(metadata[meta_key], aggregate.metadata[meta_key])
+        LOG.debug("Aggregate %s details match." % aggregate.name)
+
+    def _set_aggregate_metadata(self, aggregate, meta):
+        aggregate = self.compute_client.aggregates.set_metadata(aggregate.id,
+                                                                meta)
+
+        for key, value in meta.items():
+            self.assertEqual(meta[key], aggregate.metadata[key])
+        LOG.debug("Aggregate %s metadata updated successfully." %
+                  aggregate.name)
+
+    def _update_aggregate(self, aggregate, aggregate_name,
+                          availability_zone):
+        values = {}
+        if aggregate_name:
+            values.update({'name': aggregate_name})
+        if availability_zone:
+            values.update({'availability_zone': availability_zone})
+        if values.keys():
+            aggregate = self.compute_client.aggregates.update(aggregate.id,
+                                                              values)
+            for key, values in values.items():
+                self.assertEqual(getattr(aggregate, key), values)
+        return aggregate
+
+    @test.services('compute')
+    def test_aggregate_basic_ops(self):
+        self.useFixture(fixtures.LockFixture('availability_zone'))
+        az = 'foo_zone'
+        aggregate_name = rand_name('aggregate-scenario')
+        aggregate = self._create_aggregate(aggregate_name, az)
+
+        metadata = {'meta_key': 'meta_value'}
+        self._set_aggregate_metadata(aggregate, metadata)
+
+        host = self._get_host_name()
+        self._add_host(aggregate, host)
+        self._check_aggregate_details(aggregate, aggregate_name, az, [host],
+                                      metadata)
+
+        aggregate_name = rand_name('renamed-aggregate-scenario')
+        aggregate = self._update_aggregate(aggregate, aggregate_name, None)
+
+        additional_metadata = {'foo': 'bar'}
+        self._set_aggregate_metadata(aggregate, additional_metadata)
+
+        metadata.update(additional_metadata)
+        self._check_aggregate_details(aggregate, aggregate.name, az, [host],
+                                      metadata)
+
+        self._remove_host(aggregate, host)
+        self._delete_aggregate(aggregate)