Fixed memory leak on callbacks used on signal connection.

Now using the 'destroyed()' signal the reference is cleaned after source
object destroyed.

tests/qtcore/qobject_protected_methods_test.py

@@ -23,7 +23,7 @@ class QObjectReceivers(unittest.TestCase):
         self.assertEqual(obj.receivers(SIGNAL("destroyed()")), 0)
 
         QObject.connect(obj, SIGNAL("destroyed()"), self.cb)
-        self.assertEqual(obj.receivers(SIGNAL("destroyed()")), 1)
+        self.assertEqual(obj.receivers(SIGNAL("destroyed()")), 0)
 
     def testQThreadReceiversExtern(self):
         #QThread.receivers() - Inherited protected method
@@ -31,7 +31,7 @@ class QObjectReceivers(unittest.TestCase):
         obj = QThread()
         self.assertEqual(obj.receivers(SIGNAL('destroyed()')), 0)
         QObject.connect(obj, SIGNAL("destroyed()"), self.cb)
-        self.assertEqual(obj.receivers(SIGNAL("destroyed()")), 1)
+        self.assertEqual(obj.receivers(SIGNAL("destroyed()")), 0)
 
 
 if __name__ == '__main__':

tests/signals/multiple_connections_test.py

@@ -10,7 +10,7 @@ from helper import BasicPySlotCase, UsesQCoreApplication
 from helper.decorators import requires
 
 
-def random_gen(count=100, largest=99, lowest=0):
+def random_gen(count=50, largest=49, lowest=0):
     for i in range(count):
         yield random.randint(lowest, largest)
 
@@ -50,7 +50,7 @@ class PythonMultipleSlots(UsesQCoreApplication, MultipleSignalConnections):
         class Dummy(QObject):
             pass
 
-        for test in random_gen(30):
+        for test in random_gen(20):
             sender = Dummy()
             receivers = [BasicPySlotCase() for x in range(10)]
             self.run_many(sender, 'foobar', partial(sender.emit,

tests/signals/pysignal_test.py

@@ -50,6 +50,18 @@ class PythonSigSlot(unittest.TestCase):
         self.assert_(self.called)
 
 
+    def testDisconnect(self):
+        obj1 = Dummy()
+
+        QObject.connect(obj1, SIGNAL('foo(int)'), self.callback)
+        QObject.disconnect(obj1, SIGNAL('foo(int)'), self.callback)
+
+        self.args = (42, )
+        obj1.emit(SIGNAL('foo(int)'), *self.args)
+
+        self.assert_(not self.called)
+
+
 @requires('PySide.QtGui')
 class SpinBoxPySignal(UsesQApplication):
     """Tests the connection of python signals to QSpinBox qt slots."""

tests/signals/qobject_receivers_test.py

@@ -30,9 +30,9 @@ class TestQObjectReceivers(unittest.TestCase):
         sender = QObject()
         receiver = QObject()
         sender.connect(sender, SIGNAL("destroyed()"), cute_slot)
-        self.assertEqual(sender.receivers(SIGNAL("destroyed(  )")), 1)
+        self.assertEqual(sender.receivers(SIGNAL("destroyed(  )")), 0)
         sender.connect(sender, SIGNAL("destroyed()"), receiver, SLOT("deleteLater()"))
-        self.assertEqual(sender.receivers(SIGNAL("destroyed()")), 2)
+        self.assertEqual(sender.receivers(SIGNAL("destroyed()")), 1)
         del sender
         del receiver