Fixed #11134: signals recievers that disconnect during their processing no longer mess things up for other handlers. Thanks, Honza Kral.

While I was at it I also cleaned up the formatting of the docstrings a bit.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@10831 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/modeltests/signals/tests.py

@@ -0,0 +1,28 @@
+from django.db.models import signals
+from django.test import TestCase
+from modeltests.signals.models import Person
+
+class MyReceiver(object):
+    def __init__(self, param):
+        self.param = param
+        self._run = False
+
+    def __call__(self, signal, sender, **kwargs):
+        self._run = True
+        signal.disconnect(receiver=self, sender=sender)
+
+class SignalTests(TestCase):
+    def test_disconnect_in_dispatch(self):
+        """
+        Test that signals that disconnect when being called don't mess future
+        dispatching.
+        """
+        a, b = MyReceiver(1), MyReceiver(2)
+        signals.post_save.connect(sender=Person, receiver=a)
+        signals.post_save.connect(sender=Person, receiver=b)
+        p = Person.objects.create(first_name='John', last_name='Smith')
+        
+        self.failUnless(a._run)
+        self.failUnless(b._run)
+        self.assertEqual(signals.post_save.receivers, [])
+