Disable screen locking during autopilot test runs.

Approved by Christopher Lee, Didier Roche, PS Jenkins bot.

(bzr r3307)

tests/autopilot/unity/tests/__init__.py

@@ -43,6 +43,7 @@
 from Xlib import display
 from Xlib import Xutil
 
+from gi.repository import Gio
 
 log = getLogger(__name__)
 
@@ -66,6 +67,12 @@ def setUp(self):
         # ropey. Once it's been proven to work reliably we can remove this line:
         self.set_unity_log_level("unity.wm.compiz", "DEBUG")
 
+        # For the length of the test, disable screen locking
+        self._desktop_settings = Gio.Settings.new("org.gnome.desktop.lockdown")
+        lock_state = self._desktop_settings.get_boolean("disable-lock-screen")
+        self._desktop_settings.set_boolean("disable-lock-screen", True)
+        self.addCleanup(self._desktop_settings.set_boolean, "disable-lock-screen", lock_state)
+
     def check_test_behavior(self):
         """Fail the test if it did something naughty.