[PATCH 8/8] migration: Test for RAM and vmstate parts

[nikita . lapshin]

From: Nikita Lapshin <nikita.lapshin@openvz.org>

All other parts works just like existed capabilities. Thus there is
no need to make new tests. Though RAM and vmstate are new so here
is new test for that parts.

Signed-off-by: Nikita Lapshin <nikita.lapshin@openvz.org>
---
 .../tests/migrate-ram-stream-content-test     | 96 +++++++++++++++++++
 .../tests/migrate-ram-stream-content-test.out |  5 +
 2 files changed, 101 insertions(+)
 create mode 100755 tests/qemu-iotests/tests/migrate-ram-stream-content-test
 create mode 100644 tests/qemu-iotests/tests/migrate-ram-stream-content-test.out

diff --git a/tests/qemu-iotests/tests/migrate-ram-stream-content-test 
b/tests/qemu-iotests/tests/migrate-ram-stream-content-test
new file mode 100755
index 0000000000..2855ca4a64
--- /dev/null
+++ b/tests/qemu-iotests/tests/migrate-ram-stream-content-test
@@ -0,0 +1,96 @@
+#!/usr/bin/env python3
+# group: rw migration
+#
+# Tests for 'no-ram' and 'ram-only' capabilities
+#
+# Copyright (c) 2021 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 json
+import subprocess
+import iotests
+
+img = os.path.join(iotests.test_dir, 'disk.img')
+
+class TestRamCapabilities(iotests.QMPTestCase):
+    def setUp(self):
+        iotests.qemu_img('create', '-f', iotests.imgfmt, img, '10M')
+        self.vm = iotests.VM()
+        self.vm.launch()
+        self.vm.qmp('migrate-set-capabilities', capabilities=[
+            {
+                'capability': 'events',
+                'state': True
+            }
+        ])
+
+    def tearDown(self):
+        self.vm.shutdown()
+        os.remove(img)
+
+    def check_ram_only(self, output):
+        str_json = output.decode()
+        json_obj = json.loads(str_json)
+
+        success = False
+        for key in json_obj:
+            self.assertTrue("ram" in key)
+            success = True
+        self.assertTrue(success)
+
+    def run_migration(self, no_ram, tmp_stream):
+        if no_ram:
+            output = self.vm.qmp('migrate-set-parameters',
+                    stream_content_list = ['vmstate'])
+        else:
+            self.vm.qmp('migrate-set-parameters',
+                    stream_content_list = ['ram'])
+
+        self.vm.qmp('migrate', uri='exec:cat>' + tmp_stream)
+
+        while True:
+            event = self.vm.event_wait('MIGRATION')
+
+            if event['data']['status'] == 'completed':
+                break
+
+
+    def test_no_ram(self):
+        with iotests.FilePath('tmp_stream') as tmp_stream:
+            self.run_migration(True, tmp_stream)
+            output = subprocess.run(
+                ['../../../scripts/analyze-migration.py', '-f', tmp_stream],
+                stdout=subprocess.PIPE,
+                stderr=subprocess.STDOUT,
+                check=False).stdout
+
+            self.assertFalse('ram' in output.decode())
+
+    def test_ram_only(self):
+        with iotests.FilePath('tmp_stream') as tmp_stream:
+            self.run_migration(False, tmp_stream)
+            output = subprocess.run(
+                ['../../../scripts/analyze-migration.py', '-f', tmp_stream,
+                    '--ram-only'],
+                stdout=subprocess.PIPE,
+                stderr=subprocess.STDOUT,
+                check=False).stdout
+
+            self.check_ram_only(output)
+
+if __name__ == '__main__':
+    iotests.main(supported_protocols=['file'])
diff --git a/tests/qemu-iotests/tests/migrate-ram-stream-content-test.out 
b/tests/qemu-iotests/tests/migrate-ram-stream-content-test.out
new file mode 100644
index 0000000000..fbc63e62f8
--- /dev/null
+++ b/tests/qemu-iotests/tests/migrate-ram-stream-content-test.out
@@ -0,0 +1,5 @@
+..
+----------------------------------------------------------------------
+Ran 2 tests
+
+OK
-- 
2.31.1