diff --git a/tempest/api/compute/admin/test_aggregates.py b/tempest/api/compute/admin/test_aggregates.py
index 467a6f9..609d2c6 100644
--- a/tempest/api/compute/admin/test_aggregates.py
+++ b/tempest/api/compute/admin/test_aggregates.py
@@ -18,7 +18,6 @@
 from tempest.api.compute import base
 from tempest.common import tempest_fixtures as fixtures
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest.test import attr
 
 
@@ -35,7 +34,6 @@
     def setUpClass(cls):
         super(AggregatesAdminTestJSON, cls).setUpClass()
         cls.client = cls.os_adm.aggregates_client
-        cls.user_client = cls.aggregates_client
         cls.aggregate_name_prefix = 'test_aggregate_'
         cls.az_name_prefix = 'test_az_'
 
@@ -141,54 +139,6 @@
                          (x['id'], x['name'], x['availability_zone']),
                           aggregates))
 
-    @attr(type=['negative', 'gate'])
-    def test_aggregate_create_as_user(self):
-        # Regular user is not allowed to create an aggregate.
-        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        self.assertRaises(exceptions.Unauthorized,
-                          self.user_client.create_aggregate,
-                          aggregate_name)
-
-    @attr(type=['negative', 'gate'])
-    def test_aggregate_delete_as_user(self):
-        # Regular user is not allowed to delete an aggregate.
-        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(aggregate_name)
-        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
-
-        self.assertRaises(exceptions.Unauthorized,
-                          self.user_client.delete_aggregate,
-                          aggregate['id'])
-
-    @attr(type=['negative', 'gate'])
-    def test_aggregate_list_as_user(self):
-        # Regular user is not allowed to list aggregates.
-        self.assertRaises(exceptions.Unauthorized,
-                          self.user_client.list_aggregates)
-
-    @attr(type=['negative', 'gate'])
-    def test_aggregate_get_details_as_user(self):
-        # Regular user is not allowed to get aggregate details.
-        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(aggregate_name)
-        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
-
-        self.assertRaises(exceptions.Unauthorized,
-                          self.user_client.get_aggregate,
-                          aggregate['id'])
-
-    @attr(type=['negative', 'gate'])
-    def test_aggregate_delete_with_invalid_id(self):
-        # Delete an aggregate with invalid id should raise exceptions.
-        self.assertRaises(exceptions.NotFound,
-                          self.client.delete_aggregate, -1)
-
-    @attr(type=['negative', 'gate'])
-    def test_aggregate_get_details_with_invalid_id(self):
-        # Get aggregate details with invalid id should raise exceptions.
-        self.assertRaises(exceptions.NotFound,
-                          self.client.get_aggregate, -1)
-
     @attr(type='gate')
     def test_aggregate_add_remove_host(self):
         # Add an host to the given aggregate and remove.
@@ -262,48 +212,6 @@
         resp, body = admin_servers_client.get_server(server['id'])
         self.assertEqual(self.host, body[self._host_key])
 
-    @attr(type=['negative', 'gate'])
-    def test_aggregate_add_non_exist_host(self):
-        # Adding a non-exist host to an aggregate should raise exceptions.
-        resp, hosts_all = self.os_adm.hosts_client.list_hosts()
-        hosts = map(lambda x: x['host_name'], hosts_all)
-        while True:
-            non_exist_host = data_utils.rand_name('nonexist_host_')
-            if non_exist_host not in hosts:
-                break
-
-        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(aggregate_name)
-        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
-
-        self.assertRaises(exceptions.NotFound, self.client.add_host,
-                          aggregate['id'], non_exist_host)
-
-    @attr(type=['negative', 'gate'])
-    def test_aggregate_add_host_as_user(self):
-        # Regular user is not allowed to add a host to an aggregate.
-        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(aggregate_name)
-        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
-
-        self.assertRaises(exceptions.Unauthorized,
-                          self.user_client.add_host,
-                          aggregate['id'], self.host)
-
-    @attr(type=['negative', 'gate'])
-    def test_aggregate_remove_host_as_user(self):
-        # Regular user is not allowed to remove a host from an aggregate.
-        self.useFixture(fixtures.LockFixture('availability_zone'))
-        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(aggregate_name)
-        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
-        self.client.add_host(aggregate['id'], self.host)
-        self.addCleanup(self.client.remove_host, aggregate['id'], self.host)
-
-        self.assertRaises(exceptions.Unauthorized,
-                          self.user_client.remove_host,
-                          aggregate['id'], self.host)
-
 
 class AggregatesAdminTestXML(AggregatesAdminTestJSON):
     _host_key = (
diff --git a/tempest/api/compute/admin/test_aggregates_negative.py b/tempest/api/compute/admin/test_aggregates_negative.py
new file mode 100644
index 0000000..8506206
--- /dev/null
+++ b/tempest/api/compute/admin/test_aggregates_negative.py
@@ -0,0 +1,196 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2013 Huawei Technologies Co.,LTD.
+# 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.compute import base
+from tempest.common import tempest_fixtures as fixtures
+from tempest.common.utils import data_utils
+from tempest import exceptions
+from tempest.test import attr
+
+
+class AggregatesAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
+
+    """
+    Tests Aggregates API that require admin privileges
+    """
+
+    _interface = 'json'
+
+    @classmethod
+    def setUpClass(cls):
+        super(AggregatesAdminNegativeTestJSON, cls).setUpClass()
+        cls.client = cls.os_adm.aggregates_client
+        cls.user_client = cls.aggregates_client
+        cls.aggregate_name_prefix = 'test_aggregate_'
+        cls.az_name_prefix = 'test_az_'
+
+        resp, hosts_all = cls.os_adm.hosts_client.list_hosts()
+        hosts = map(lambda x: x['host_name'],
+                    filter(lambda y: y['service'] == 'compute', hosts_all))
+        cls.host = hosts[0]
+
+    @attr(type=['negative', 'gate'])
+    def test_aggregate_create_as_user(self):
+        # Regular user is not allowed to create an aggregate.
+        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
+        self.assertRaises(exceptions.Unauthorized,
+                          self.user_client.create_aggregate,
+                          aggregate_name)
+
+    @attr(type=['negative', 'gate'])
+    def test_aggregate_create_aggregate_name_length_less_than_1(self):
+        # the length of aggregate name should >= 1 and <=255
+        self.assertRaises(exceptions.BadRequest,
+                          self.client.create_aggregate,
+                          '')
+
+    @attr(type=['negative', 'gate'])
+    def test_aggregate_create_aggregate_name_length_exceeds_255(self):
+        # the length of aggregate name should >= 1 and <=255
+        aggregate_name = 'a' * 256
+        self.assertRaises(exceptions.BadRequest,
+                          self.client.create_aggregate,
+                          aggregate_name)
+
+    @attr(type=['negative', 'gate'])
+    def test_aggregate_create_with_existent_aggregate_name(self):
+        # creating an aggregate with existent aggregate name is forbidden
+        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
+        resp, aggregate = self.client.create_aggregate(aggregate_name)
+        self.assertEqual(200, resp.status)
+        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
+
+        self.assertRaises(exceptions.Conflict,
+                          self.client.create_aggregate,
+                          aggregate_name)
+
+    @attr(type=['negative', 'gate'])
+    def test_aggregate_delete_as_user(self):
+        # Regular user is not allowed to delete an aggregate.
+        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
+        resp, aggregate = self.client.create_aggregate(aggregate_name)
+        self.assertEqual(200, resp.status)
+        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
+
+        self.assertRaises(exceptions.Unauthorized,
+                          self.user_client.delete_aggregate,
+                          aggregate['id'])
+
+    @attr(type=['negative', 'gate'])
+    def test_aggregate_list_as_user(self):
+        # Regular user is not allowed to list aggregates.
+        self.assertRaises(exceptions.Unauthorized,
+                          self.user_client.list_aggregates)
+
+    @attr(type=['negative', 'gate'])
+    def test_aggregate_get_details_as_user(self):
+        # Regular user is not allowed to get aggregate details.
+        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
+        resp, aggregate = self.client.create_aggregate(aggregate_name)
+        self.assertEqual(200, resp.status)
+        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
+
+        self.assertRaises(exceptions.Unauthorized,
+                          self.user_client.get_aggregate,
+                          aggregate['id'])
+
+    @attr(type=['negative', 'gate'])
+    def test_aggregate_delete_with_invalid_id(self):
+        # Delete an aggregate with invalid id should raise exceptions.
+        self.assertRaises(exceptions.NotFound,
+                          self.client.delete_aggregate, -1)
+
+    @attr(type=['negative', 'gate'])
+    def test_aggregate_get_details_with_invalid_id(self):
+        # Get aggregate details with invalid id should raise exceptions.
+        self.assertRaises(exceptions.NotFound,
+                          self.client.get_aggregate, -1)
+
+    @attr(type=['negative', 'gate'])
+    def test_aggregate_add_non_exist_host(self):
+        # Adding a non-exist host to an aggregate should raise exceptions.
+        resp, hosts_all = self.os_adm.hosts_client.list_hosts()
+        hosts = map(lambda x: x['host_name'], hosts_all)
+        while True:
+            non_exist_host = data_utils.rand_name('nonexist_host_')
+            if non_exist_host not in hosts:
+                break
+
+        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
+        resp, aggregate = self.client.create_aggregate(aggregate_name)
+        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
+
+        self.assertRaises(exceptions.NotFound, self.client.add_host,
+                          aggregate['id'], non_exist_host)
+
+    @attr(type=['negative', 'gate'])
+    def test_aggregate_add_host_as_user(self):
+        # Regular user is not allowed to add a host to an aggregate.
+        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
+        resp, aggregate = self.client.create_aggregate(aggregate_name)
+        self.assertEqual(200, resp.status)
+        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
+
+        self.assertRaises(exceptions.Unauthorized,
+                          self.user_client.add_host,
+                          aggregate['id'], self.host)
+
+    @attr(type=['negative', 'gate'])
+    def test_aggregate_add_existent_host(self):
+        self.useFixture(fixtures.LockFixture('availability_zone'))
+        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
+        resp, aggregate = self.client.create_aggregate(aggregate_name)
+        self.assertEqual(200, resp.status)
+        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
+
+        resp, body = self.client.add_host(aggregate['id'], self.host)
+        self.assertEqual(200, resp.status)
+        self.addCleanup(self.client.remove_host, aggregate['id'], self.host)
+
+        self.assertRaises(exceptions.Conflict, self.client.add_host,
+                          aggregate['id'], self.host)
+
+    @attr(type=['negative', 'gate'])
+    def test_aggregate_remove_host_as_user(self):
+        # Regular user is not allowed to remove a host from an aggregate.
+        self.useFixture(fixtures.LockFixture('availability_zone'))
+        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
+        resp, aggregate = self.client.create_aggregate(aggregate_name)
+        self.assertEqual(200, resp.status)
+        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
+        resp, body = self.client.add_host(aggregate['id'], self.host)
+        self.assertEqual(200, resp.status)
+        self.addCleanup(self.client.remove_host, aggregate['id'], self.host)
+
+        self.assertRaises(exceptions.Unauthorized,
+                          self.user_client.remove_host,
+                          aggregate['id'], self.host)
+
+    @attr(type=['negative', 'gate'])
+    def test_aggregate_remove_nonexistent_host(self):
+        non_exist_host = data_utils.rand_name('nonexist_host_')
+        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
+        resp, aggregate = self.client.create_aggregate(aggregate_name)
+        self.assertEqual(200, resp.status)
+        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
+
+        self.assertRaises(exceptions.NotFound, self.client.remove_host,
+                          aggregate['id'], non_exist_host)
+
+
+class AggregatesAdminNegativeTestXML(AggregatesAdminNegativeTestJSON):
+    _interface = 'xml'