[gnome-control-center/wip/hadess/fix-power-scenario-test] power: Fix launching upower from scenario tester

[Bastien Nocera <hadess src gnome org>]

commit e1b3b05e90466bdcb2293192ddabab8cf32157a4
Author: Bastien Nocera <hadess hadess net>
Date:   Wed Jan 26 12:59:39 2022 +0100

    power: Fix launching upower from scenario tester
    
    Not everyone would have upower built under jhbuild, so use the system
    one if we can't find it.

 panels/power/power-panel-scenario-tester.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/panels/power/power-panel-scenario-tester.py b/panels/power/power-panel-scenario-tester.py
index af0fa3721..6c8a0f18d 100755
--- a/panels/power/power-panel-scenario-tester.py
+++ b/panels/power/power-panel-scenario-tester.py
@@ -57,7 +57,10 @@ class GccDBusTestCase(DBusTestCase):
         if os.environ.get('UNDER_JHBUILD', False):
             jhbuild_prefix = os.environ['JHBUILD_PREFIX']
             klass.upowerd_path = os.path.join(jhbuild_prefix, 'libexec', 'upowerd')
-        else:
+            if not GLib.file_test(klass.upowerd_path, GLib.FileTest.IS_EXECUTABLE):
+                klass.upowerd_path = None
+
+        if os.environ.get('UNDER_JHBUILD', False) or klass.upowerd_path == None:
             klass.upowerd_path = None
             with open('/usr/share/dbus-1/system-services/org.freedesktop.UPower.service') as f:
                 for line in f: