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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, [])
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