Add delete_agent to AgentsClient

This patchset add delete_agent method that implements respective API [1]

[1] https://developer.openstack.org/api-ref/network/v2/index.html#delete-agent

Change-Id: I093574579bcecb08c2e2d4deeeda0438f3900ad6
Closes-Bug: 1792007

releasenotes/notes/agents-client-delete-method-de1a7fb3f845999c.yaml

@@ -0,0 +1,7 @@
+---
+features:
+  - |
+    Adds the new method to AgentsClient that implements agent deletion
+    according to the API [0].
+    [0] https://developer.openstack.org/api-ref/network/v2/index.html#delete-agent
+

tempest/api/network/admin/test_agent_management.py

@@ -15,7 +15,9 @@
 from tempest.api.network import base
 from tempest.common import tempest_fixtures as fixtures
 from tempest.common import utils
+from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
+from tempest.lib import exceptions as lib_exc
 
 
 class AgentManagementTestJSON(base.BaseAdminNetworkTest):
@@ -86,3 +88,11 @@ class AgentManagementTestJSON(base.BaseAdminNetworkTest):
         origin_agent = {'description': description}
         self.admin_agents_client.update_agent(agent_id=self.agent['id'],
                                               agent=origin_agent)
+
+    @decorators.idempotent_id('b33af888-b6ac-4e68-a0ca-0444c2696cf9')
+    @decorators.attr(type=['negative'])
+    def test_delete_agent_negative(self):
+        non_existent_id = data_utils.rand_uuid()
+        self.assertRaises(
+            lib_exc.NotFound,
+            self.agents_client.delete_agent, non_existent_id)

tempest/lib/services/network/agents_client.py

@@ -37,6 +37,16 @@ class AgentsClient(base.BaseNetworkClient):
         uri = '/agents/%s' % agent_id
         return self.show_resource(uri, **fields)
 
+    def delete_agent(self, agent_id):
+        """Delete agent.
+
+        For a full list of available parameters, please refer to the official
+        API reference:
+        https://developer.openstack.org/api-ref/network/v2/index.html#delete-agent
+        """
+        uri = '/agents/%s' % agent_id
+        return self.delete_resource(uri)
+
     def list_agents(self, **filters):
         """List all agents.
 

tempest/tests/lib/services/network/test_agents_client.py

@@ -0,0 +1,37 @@
+# Copyright 2018 AT&T 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.lib.services.network import agents_client
+from tempest.tests.lib import fake_auth_provider
+from tempest.tests.lib.services import base
+
+
+class TestAgentsClient(base.BaseServiceTest):
+
+    FAKE_AGENT_ID = "d32019d3-bc6e-4319-9c1d-6123f4135a88"
+
+    def setUp(self):
+        super(TestAgentsClient, self).setUp()
+        fake_auth = fake_auth_provider.FakeAuthProvider()
+        self.agents_client = agents_client.AgentsClient(
+            fake_auth, "network", "regionOne")
+
+    def test_delete_agent(self):
+        self.check_service_client_function(
+            self.agents_client.delete_agent,
+            "tempest.lib.common.rest_client.RestClient.delete",
+            {},
+            status=204,
+            agent_id=self.FAKE_AGENT_ID)