Commit ac84b9ec96 for qemu.org

commit ac84b9ec9604db04a5c3a5935eff8caf85d01597
Author: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Date:   Wed Jul 29 12:12:52 2026 +0300

    tests/functional: add skipWithoutSudo() decorator

    To be used in the next commit: that would be a test for TAP
    networking, and it will need to setup TAP device.

    Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
    Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
    Reviewed-by: Thomas Huth <thuth@redhat.com>
    Tested-by: Lei Yang <leiyang@redhat.com>
    Reviewed-by: Maksim Davydov <davydov-max@yandex-team.ru>
    Reviewed-by: Ben Chaney <bchaney@akamai.com>
    Message-ID: <20260729091334.1863155-15-vsementsov@yandex-team.ru>
    Signed-off-by: Thomas Huth <thuth@redhat.com>

diff --git a/tests/functional/qemu_test/decorators.py b/tests/functional/qemu_test/decorators.py
index fcf236ecfd..aa135acc78 100644
--- a/tests/functional/qemu_test/decorators.py
+++ b/tests/functional/qemu_test/decorators.py
@@ -6,6 +6,7 @@
 import os
 import platform
 import resource
+import subprocess
 from unittest import skipIf, skipUnless

 from .cmd import which
@@ -177,3 +178,18 @@ def skipLockedMemoryTest(locked_memory):
         ulimit_memory == resource.RLIM_INFINITY or ulimit_memory >= locked_memory * 1024,
         f'Test required {locked_memory} kB of available locked memory',
     )
+
+'''
+Decorator to skip execution of a test if passwordless
+sudo command is not available.
+'''
+def skipWithoutSudo():
+    proc = subprocess.run(["sudo", "-n", "/bin/true"],
+                          stdin=subprocess.PIPE,
+                          stdout=subprocess.PIPE,
+                          stderr=subprocess.STDOUT,
+                          universal_newlines=True,
+                          check=False)
+
+    return skipUnless(proc.returncode == 0,
+                      f'requires password-less sudo access: {proc.stdout}')