[pitivi] tests: Update test_mainwindow

[Thibault Saunier <tsaunier src gnome org>]

commit 6eae842f26edc937941fe32463f43723105cc744
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Fri Jul 10 18:26:24 2015 +0200

    tests: Update test_mainwindow
    
    Summary: Depends on D255
    
    Reviewers: Mathieu_Du, aleb
    
    Differential Revision: https://phabricator.freedesktop.org/D256

 tests/test_mainwindow.py |   13 ++++---------
 1 files changed, 4 insertions(+), 9 deletions(-)
---
diff --git a/tests/test_mainwindow.py b/tests/test_mainwindow.py
index e0374ca..724e82b 100644
--- a/tests/test_mainwindow.py
+++ b/tests/test_mainwindow.py
@@ -33,17 +33,12 @@ class TestMainWindow(TestCase):
 
     def testSwitchContextTab(self):
         for expected_tab, bElement in [
-                (2, GES.TitleSource()),
-                (1, GES.VideoTransition()),
-                (0, GES.VideoUriSource()),
-                (1, GES.VideoTransition()),
-                (0, GES.ImageSource()),
-                (1, GES.AudioTransition()),
-                (0, GES.AudioUriSource()),
-                (1, GES.AudioTransition())]:
+                (2, GES.TitleClip()),
+                (0, GES.SourceClip()),
+                (1, GES.TransitionClip())]:
             self.mainwindow.switchContextTab(bElement)
             self.assertEqual(
-                expected_tab, self.mainwindow.context_tabs.get_current_page())
+                expected_tab, self.mainwindow.context_tabs.get_current_page(), bElement)
             # Make sure the tab does not change when using an invalid argument.
             self.mainwindow.switchContextTab("invalid")
             self.assertEqual(