add some negative tests for force_delete/restore

- test_force_delete_nonexistent_server_id
- test_force_delete_server_invalid_state
- test_restore_nonexistent_server_id
- test_restore_server_invalid_state

negative tests should stay in negative files of corresponding action.

Change-Id: Icafcb1e17382f8856937e8e903650fb424b00a25

tempest/api/compute/servers/test_servers_negative.py

@@ -359,6 +359,36 @@ class ServersNegativeTestJSON(base.BaseV2ComputeTest):
                           self.client.get_console_output,
                           nonexistent_server, 10)
 
+    @attr(type=['negative', 'gate'])
+    def test_force_delete_nonexistent_server_id(self):
+        non_existent_server_id = str(uuid.uuid4())
+
+        self.assertRaises(exceptions.NotFound,
+                          self.client.force_delete_server,
+                          non_existent_server_id)
+
+    @attr(type=['negative', 'gate'])
+    def test_force_delete_server_invalid_state(self):
+        # we can only force-delete a server in 'soft-delete' state
+        self.assertRaises(exceptions.Conflict,
+                          self.client.force_delete_server,
+                          self.server_id)
+
+    @attr(type=['negative', 'gate'])
+    def test_restore_nonexistent_server_id(self):
+        non_existent_server_id = str(uuid.uuid4())
+
+        self.assertRaises(exceptions.NotFound,
+                          self.client.restore_soft_deleted_server,
+                          non_existent_server_id)
+
+    @attr(type=['negative', 'gate'])
+    def test_restore_server_invalid_state(self):
+        # we can only restore-delete a server in 'soft-delete' state
+        self.assertRaises(exceptions.Conflict,
+                          self.client.restore_soft_deleted_server,
+                          self.server_id)
+
 
 class ServersNegativeTestXML(ServersNegativeTestJSON):
     _interface = 'xml'

tempest/services/compute/json/servers_client.py

@@ -390,3 +390,11 @@ class ServersClientJSON(RestClient):
                               (str(server_id), str(request_id)))
         body = json.loads(body)
         return resp, body['instanceAction']
+
+    def force_delete_server(self, server_id, **kwargs):
+        """Force delete a server."""
+        return self.action(server_id, 'forceDelete', None, **kwargs)
+
+    def restore_soft_deleted_server(self, server_id, **kwargs):
+        """Restore a soft-deleted server."""
+        return self.action(server_id, 'restore', None, **kwargs)

tempest/services/compute/xml/servers_client.py

@@ -600,3 +600,11 @@ class ServersClientXML(RestClientXML):
                               (server_id, request_id), self.headers)
         body = xml_to_json(etree.fromstring(body))
         return resp, body
+
+    def force_delete_server(self, server_id, **kwargs):
+        """Force delete a server."""
+        return self.action(server_id, 'forceDelete', None, **kwargs)
+
+    def restore_soft_deleted_server(self, server_id, **kwargs):
+        """Restore a soft-deleted server."""
+        return self.action(server_id, 'restore', None, **kwargs)