[pitivi] tests: Skip TestGnomeSystem.testPowerInhibition if the power is inhibited

[Thibault Saunier <tsaunier src gnome org>]

commit dfc908cfa54ad186a8ee492d572452adc42e0a15
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Tue Feb 18 11:00:05 2014 +0100

    tests: Skip TestGnomeSystem.testPowerInhibition if the power is inhibited

 tests/test_system.py |   33 +++++++++++++++++----------------
 1 files changed, 17 insertions(+), 16 deletions(-)
---
diff --git a/tests/test_system.py b/tests/test_system.py
index 5abe9c0..4999392 100644
--- a/tests/test_system.py
+++ b/tests/test_system.py
@@ -86,6 +86,7 @@ class TestSystem(TestCase):
 
 
 class TestGnomeSystem(TestCase):
+
     def setUp(self):
         self.system = getSystem()
 
@@ -94,40 +95,40 @@ class TestGnomeSystem(TestCase):
             # We can only test this on a Gnome system.
             return
 
-        #check that no other programs are inhibiting, otherwise the
-        #test is compromised
-        self.assertTrue(not self.system.session_iface.IsInhibited(
-            INHIBIT_LOGOUT | INHIBIT_USER_SWITCHING | INHIBIT_SUSPEND |
-            INHIBIT_SESSION_IDLE))
+        if not self.system.session_iface.IsInhibited(
+                INHIBIT_LOGOUT | INHIBIT_USER_SWITCHING | INHIBIT_SUSPEND |
+                INHIBIT_SESSION_IDLE):
+            # Other programs are inhibiting, cannot test.
+            return
 
         self.system.inhibitScreensaver('1')
         self.assertTrue(self.system.session_iface.IsInhibited(
             INHIBIT_SESSION_IDLE))
 
         self.system.inhibitSleep('2')
-        #screensaver should be able to turn off, but
-        self.assertTrue(not self.system.session_iface.IsInhibited(
+        # Screensaver should be able to turn off, but
+        self.assertFalse(self.system.session_iface.IsInhibited(
             INHIBIT_SESSION_IDLE))
-        #suspend (sleep, suspend, shutdown), logout should be inhibited
-        #IsInhibited will return true if just one is inhibited, so we
-        #check both separately.
+        # suspend (sleep, suspend, shutdown) and logout should be inhibited.
+        # IsInhibited will return True if just one is inhibited, so we
+        # check both separately.
         self.assertTrue(self.system.session_iface.IsInhibited(
             INHIBIT_SUSPEND))
         self.assertTrue(self.system.session_iface.IsInhibited(
             INHIBIT_LOGOUT))
 
         self.system.uninhibitSleep('2')
-        #screensaver should now be blocked
+        # Screensaver should now be blocked.
         self.assertTrue(self.system.session_iface.IsInhibited(
             INHIBIT_SESSION_IDLE))
-        #suspend and logout should be unblocked
-        self.assertTrue(not self.system.session_iface.IsInhibited(
+        # Suspend and logout should be unblocked.
+        self.assertFalse(self.system.session_iface.IsInhibited(
             INHIBIT_SUSPEND))
-        self.assertTrue(not self.system.session_iface.IsInhibited(
+        self.assertFalse(self.system.session_iface.IsInhibited(
             INHIBIT_LOGOUT))
 
         self.system.uninhibitScreensaver('1')
-        #now everything should be unblocked
-        self.assertTrue(not self.system.session_iface.IsInhibited(
+        # Now everything should be unblocked.
+        self.assertFalse(self.system.session_iface.IsInhibited(
             INHIBIT_LOGOUT | INHIBIT_USER_SWITCHING | INHIBIT_SUSPEND |
             INHIBIT_SESSION_IDLE))