[PATCH 2/2] iotests: add blockdev-add-transaction

[Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>]

Add a test for transaction support of blockdev-add.

Test is format-agnostic, so limit it to qcow2 to avoid extra test runs.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 .../tests/blockdev-add-transaction            | 52 +++++++++++++++++++
 .../tests/blockdev-add-transaction.out        |  6 +++
 2 files changed, 58 insertions(+)
 create mode 100755 tests/qemu-iotests/tests/blockdev-add-transaction
 create mode 100644 tests/qemu-iotests/tests/blockdev-add-transaction.out

diff --git a/tests/qemu-iotests/tests/blockdev-add-transaction b/tests/qemu-iotests/tests/blockdev-add-transaction
new file mode 100755
index 0000000000..ce3c1c069b
--- /dev/null
+++ b/tests/qemu-iotests/tests/blockdev-add-transaction
@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+#
+# Test blockdev-add transaction action
+#
+# Copyright (c) 2022 Virtuozzo International GmbH.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+import iotests
+from iotests import log
+
+iotests.script_initialize(supported_fmts=['qcow2'])
+
+with iotests.VM() as vm:
+    vm.launch()
+
+    # Use same node-name for nodes, neither one should appear.
+    vm.qmp_log('transaction', actions=[
+        {'type': 'blockdev-add',
+         'data': {'node-name': 'node0', 'driver': 'null-co',
+                  'size': 1024 * 1024}},
+        {'type': 'blockdev-add',
+         'data': {'node-name': 'node0', 'driver': 'null-co',
+                  'size': 1024 * 1024}}
+    ])
+
+    n = len(vm.qmp('query-named-block-nodes')['return'])
+    log(f'Created {n} nodes')
+
+    vm.qmp_log('transaction', actions=[
+        {'type': 'blockdev-add',
+         'data': {'node-name': 'node0', 'driver': 'null-co',
+                  'size': 1024 * 1024}},
+        {'type': 'blockdev-add',
+         'data': {'node-name': 'node1', 'driver': 'null-co',
+                  'size': 1024 * 1024}}
+    ])
+
+    n = len(vm.qmp('query-named-block-nodes')['return'])
+    log(f'Created {n} nodes')
diff --git a/tests/qemu-iotests/tests/blockdev-add-transaction.out b/tests/qemu-iotests/tests/blockdev-add-transaction.out
new file mode 100644
index 0000000000..7e6cd5a9a3
--- /dev/null
+++ b/tests/qemu-iotests/tests/blockdev-add-transaction.out
@@ -0,0 +1,6 @@
+{"execute": "transaction", "arguments": {"actions": [{"data": {"driver": "null-co", "node-name": "node0", "size": 1048576}, "type": "blockdev-add"}, {"data": {"driver": "null-co", "node-name": "node0", "size": 1048576}, "type": "blockdev-add"}]}}
+{"error": {"class": "GenericError", "desc": "Duplicate nodes with node-name='node0'"}}
+Created 0 nodes
+{"execute": "transaction", "arguments": {"actions": [{"data": {"driver": "null-co", "node-name": "node0", "size": 1048576}, "type": "blockdev-add"}, {"data": {"driver": "null-co", "node-name": "node1", "size": 1048576}, "type": "blockdev-add"}]}}
+{"return": {}}
+Created 2 nodes
-- 
2.31.1