[OE-core] [PATCH 1/1] oeqa/runtime/cases/systemd.py: avoid timeout problem

[Chen Qi]

I've encountered the following error when doing testimage.

  RESULTS - systemd.SystemdBasicTests.test_systemd_list - Testcase 551: FAILED

After investigation, I found that it's not functionality issue. It's
just that the qemu was not running fast enough. And it resulted 'time out'
problem when using `systemctl list-unit-files'.

The correctness could be verified by using 'busctl' directly.
e.g.
busctl --timeout=240 call org.freedesktop.systemd1 \
/org/freedesktop/systemd1 org.freedesktop.systemd1.Manager \
ListUnitFilesByPatterns asas 0 0

Checking the source codes, I can see that the timeout is 25s. I don't
think we should patch systemd's source codes just for such a simple
runtime test case.

So instead, I change the test case to use 'busctl' directly if
'systemctl list-unit-files' gets a timeout error.

Signed-off-by: Chen Qi <Qi.Chen at windriver.com>
---
 meta/lib/oeqa/runtime/cases/systemd.py | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/meta/lib/oeqa/runtime/cases/systemd.py b/meta/lib/oeqa/runtime/cases/systemd.py
index db69384..b4f1025 100644
--- a/meta/lib/oeqa/runtime/cases/systemd.py
+++ b/meta/lib/oeqa/runtime/cases/systemd.py
@@ -81,7 +81,19 @@ class SystemdBasicTests(SystemdTest):
     @OETestID(551)
     @OETestDepends(['systemd.SystemdBasicTests.test_systemd_basic'])
     def test_systemd_list(self):
-        self.systemctl('list-unit-files')
+        command = 'systemctl list-unit-files'
+        status, output = self.target.run(command)
+        message = '\n'.join([command, output])
+        match = re.search('Connection timed out', output)
+        if match:
+            # it's possible that qemu is running slow
+            # use busctl to check the results with timeout set to 240s
+            command = 'busctl --timeout=240 call org.freedesktop.systemd1 /org/freedesktop/systemd1 org.freedesktop.systemd1.Manager ListUnitFilesByPatterns asas 0 0'
+            status, output = self.target.run(command)
+            message = '\n'.join([command, output])
+            self.assertEqual(status, 0, message)
+        else:
+            self.assertEqual(status, 0, message)
 
     @OETestID(550)
     @OETestDepends(['systemd.SystemdBasicTests.test_systemd_basic'])
-- 
1.9.1