[PATCH v4 10/10] iotests: add 298 to test new preallocate filter driver

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

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 tests/qemu-iotests/298     | 50 ++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/298.out |  6 +++++
 tests/qemu-iotests/group   |  1 +
 3 files changed, 57 insertions(+)
 create mode 100644 tests/qemu-iotests/298
 create mode 100644 tests/qemu-iotests/298.out

diff --git a/tests/qemu-iotests/298 b/tests/qemu-iotests/298
new file mode 100644
index 0000000000..4f2087352a
--- /dev/null
+++ b/tests/qemu-iotests/298
@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+#
+# Test for preallocate filter
+#
+# Copyright (c) 2020 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 os
+import iotests
+from iotests import log
+
+iotests.script_initialize(supported_fmts=['qcow2'])
+iotests.verify_o_direct()
+
+size = 10 * 1024 * 1024
+disk = iotests.file_path('disk')
+
+iotests.qemu_img_create('-f', iotests.imgfmt, disk, str(size))
+
+opts = f'driver={iotests.imgfmt},' \
+    f'file.driver=preallocate,file.file.filename={disk}'
+p = iotests.QemuIoInteractive('--image-opts', '-t', 'none', opts)
+
+log(p.cmd('write 0 1M'), filters=[iotests.filter_qemu_io])
+p.cmd('flush')
+
+if os.path.getsize(disk) > 100 * 1024 * 1024:
+    log('file in progress is big, preallocation works')
+
+p.close()
+
+if os.path.getsize(disk) < 10 * 1024 * 1024:
+    log('file is small after close')
+
+# Check that there are no leaks.
+log(iotests.qemu_img_pipe('check', '-f', 'qcow2', disk),
+    filters=[iotests.filter_img_check])
diff --git a/tests/qemu-iotests/298.out b/tests/qemu-iotests/298.out
new file mode 100644
index 0000000000..baf8f8425c
--- /dev/null
+++ b/tests/qemu-iotests/298.out
@@ -0,0 +1,6 @@
+wrote 1048576/1048576 bytes at offset 0
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+file in progress is big, preallocation works
+file is small after close
+No errors were found on the image.
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 7f76066640..cdcde2fe48 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -306,6 +306,7 @@
 295 rw
 296 rw
 297 meta
+298 auto quick
 299 auto quick
 301 backing quick
 302 quick
-- 
2.21.3