linux: Add helper to get DisplayDevice property

In the integration tests.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/linux/integration-test b/src/linux/integration-test
index 096e6d7..413d924 100755
--- a/src/linux/integration-test
+++ b/src/linux/integration-test
@@ -174,6 +174,14 @@ class Tests(unittest.TestCase):
             '/org/freedesktop/UPower', 'org.freedesktop.DBus.Properties', None)
         return proxy.Get('(ss)', UP, name)
 
+    def get_dbus_display_property(self, name):
+        '''Get property value from display device D-Bus interface.'''
+
+        proxy = Gio.DBusProxy.new_sync(
+            self.dbus, Gio.DBusProxyFlags.DO_NOT_AUTO_START, None, UP,
+            UP_DISPLAY_OBJECT_PATH, 'org.freedesktop.DBus.Properties', None)
+        return proxy.Get('(ss)', UP, name)
+
     def get_dbus_dev_property(self, device, name):
         '''Get property value from an upower device D-Bus path.'''