Index: tests/test_actiongroup.py
===================================================================
--- tests/test_actiongroup.py	(revision 2817)
+++ tests/test_actiongroup.py	(revision 2818)
@@ -102,17 +102,22 @@
         uimanager.remove_ui(self.merge_id0)
         uimanager.remove_action_group(ag0)
 
-        gc.collect()             # Clean out unreachable objects
+        if gobject.pygobject_version >= (2,13):
+            ag0ref = ag0.weak_ref()
+            del ag0
+            self.assertEqual(ag0ref(), None)
+        else:
+            gc.collect()             # Clean out unreachable objects
 
-        del ag0
-        self.assertEqual(gc.collect(), 1) # Collect just the ActionGroup
+            del ag0
+            self.assertEqual(gc.collect(), 1) # Collect just the ActionGroup
 
-        uimanager.ensure_update()
-        self.assertEqual(gc.collect(), 6) # Now the GtkActions have lost their last
-                                 # GObject reference; they should be collected.
-                                 # We have a ToggleAction, an Action and a
-                                 # RadioAction, plus self.cb is bound in three
-                                 # closures.
+            uimanager.ensure_update()
+            self.assertEqual(gc.collect(), 6) # Now the GtkActions have lost their last
+                                     # GObject reference; they should be collected.
+                                     # We have a ToggleAction, an Action and a
+                                     # RadioAction, plus self.cb is bound in three
+                                     # closures.
 
         gtk.main_quit()
 
Index: tests/test_gdk.py
===================================================================
--- tests/test_gdk.py	(revision 2817)
+++ tests/test_gdk.py	(revision 2818)
@@ -1,7 +1,7 @@
 import unittest
 import gc
 
-from common import gtk
+from common import gtk, gobject
 
 class CallOnDel:
     def __init__(self, callback):
@@ -52,7 +52,7 @@
         while True:
             x = gc.collect()
             cnt += x
-            if x:
+            if x == 0:
                 break
         return cnt
 
@@ -61,13 +61,23 @@
             pass
 
         display = gtk.gdk.Display(None)
-        del display
+        if gobject.pygobject_version >= (2,13):
+            dispref = display.weak_ref()
+            del display
+            self.assertEqual(dispref(), None)
+        else:
+            del display
+            self.assertEquals(self._collect(), 1)
 
-        self.assertEquals(self._collect(), 1)
-
         display = gtk.gdk.Display(None)
         self.assertEquals(display.__grefcount__, 1)
         display.close()
         self.assertEquals(display.__grefcount__, 1)
-        del display
-        self.assertEquals(self._collect(), 1)
+
+        if gobject.pygobject_version >= (2,13):
+            dispref = display.weak_ref()
+            del display
+            self.assertEqual(dispref(), None)
+        else:
+            del display
+            self.assertEquals(self._collect(), 1)