Merged the signals and signals_regress test packages.
This patch also made the tests less likely to pollute the global state in case of failure.
This commit is contained in:
Loic Bistuer
Simon Charette
parent
a0f3eeccf3
commit
058e434064
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@ -23,3 +23,20 @@ class Car(models.Model):
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def __str__(self):
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return "%s %s" % (self.make, self.model)
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@python_2_unicode_compatible
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class Author(models.Model):
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name = models.CharField(max_length=20)
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def __str__(self):
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return self.name
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@python_2_unicode_compatible
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class Book(models.Model):
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name = models.CharField(max_length=20)
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authors = models.ManyToManyField(Author)
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def __str__(self):
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return self.name
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@ -5,9 +5,97 @@ from django.dispatch import receiver
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from django.test import TestCase
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from django.utils import six
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from .models import Person, Car
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from .models import Author, Book, Car, Person
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class SignalTests(TestCase):
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def setUp(self):
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# Save up the number of connected signals so that we can check at the
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# end that all the signals we register get properly unregistered (#9989)
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self.pre_signals = (
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len(signals.pre_save.receivers),
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len(signals.post_save.receivers),
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len(signals.pre_delete.receivers),
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len(signals.post_delete.receivers),
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)
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def tearDown(self):
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# Check that all our signals got disconnected properly.
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post_signals = (
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len(signals.pre_save.receivers),
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len(signals.post_save.receivers),
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len(signals.pre_delete.receivers),
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len(signals.post_delete.receivers),
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)
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self.assertEqual(self.pre_signals, post_signals)
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def test_save_signals(self):
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data = []
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def pre_save_handler(signal, sender, instance, **kwargs):
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data.append(
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(instance, kwargs.get("raw", False))
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)
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def post_save_handler(signal, sender, instance, **kwargs):
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data.append(
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(instance, kwargs.get("created"), kwargs.get("raw", False))
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)
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signals.pre_save.connect(pre_save_handler)
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signals.post_save.connect(post_save_handler)
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try:
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p1 = Person.objects.create(first_name="John", last_name="Smith")
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self.assertEqual(data, [
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(p1, False),
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(p1, True, False),
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])
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data[:] = []
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p1.first_name = "Tom"
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p1.save()
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self.assertEqual(data, [
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(p1, False),
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(p1, False, False),
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])
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data[:] = []
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# Calling an internal method purely so that we can trigger a "raw" save.
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p1.save_base(raw=True)
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self.assertEqual(data, [
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(p1, True),
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(p1, False, True),
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])
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data[:] = []
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p2 = Person(first_name="James", last_name="Jones")
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p2.id = 99999
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p2.save()
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self.assertEqual(data, [
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(p2, False),
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(p2, True, False),
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])
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data[:] = []
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p2.id = 99998
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p2.save()
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self.assertEqual(data, [
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(p2, False),
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(p2, True, False),
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])
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finally:
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signals.post_delete.disconnect(pre_save_handler)
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signals.pre_delete.disconnect(post_save_handler)
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def test_delete_signals(self):
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data = []
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def pre_delete_handler(signal, sender, instance, **kwargs):
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data.append(
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(instance, instance.id is None)
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)
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# #8285: signals can be any callable
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class PostDeleteHandler(object):
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def __init__(self, data):
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@ -17,100 +105,12 @@ class PostDeleteHandler(object):
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self.data.append(
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(instance, instance.id is None)
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)
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post_delete_handler = PostDeleteHandler(data)
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class MyReceiver(object):
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def __init__(self, param):
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self.param = param
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self._run = False
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def __call__(self, signal, sender, **kwargs):
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self._run = True
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signal.disconnect(receiver=self, sender=sender)
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class SignalTests(TestCase):
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def test_basic(self):
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# Save up the number of connected signals so that we can check at the
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# end that all the signals we register get properly unregistered (#9989)
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pre_signals = (
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len(signals.pre_save.receivers),
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len(signals.post_save.receivers),
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len(signals.pre_delete.receivers),
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len(signals.post_delete.receivers),
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)
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data = []
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def pre_save_test(signal, sender, instance, **kwargs):
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data.append(
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(instance, kwargs.get("raw", False))
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)
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signals.pre_save.connect(pre_save_test)
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def post_save_test(signal, sender, instance, **kwargs):
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data.append(
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(instance, kwargs.get("created"), kwargs.get("raw", False))
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)
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signals.post_save.connect(post_save_test)
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def pre_delete_test(signal, sender, instance, **kwargs):
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data.append(
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(instance, instance.id is None)
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)
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signals.pre_delete.connect(pre_delete_test)
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post_delete_test = PostDeleteHandler(data)
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signals.post_delete.connect(post_delete_test)
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# throw a decorator syntax receiver into the mix
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@receiver(signals.pre_save)
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def pre_save_decorator_test(signal, sender, instance, **kwargs):
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data.append(instance)
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@receiver(signals.pre_save, sender=Car)
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def pre_save_decorator_sender_test(signal, sender, instance, **kwargs):
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data.append(instance)
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p1 = Person(first_name="John", last_name="Smith")
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self.assertEqual(data, [])
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p1.save()
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self.assertEqual(data, [
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(p1, False),
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p1,
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(p1, True, False),
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])
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data[:] = []
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p1.first_name = "Tom"
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p1.save()
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self.assertEqual(data, [
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(p1, False),
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p1,
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(p1, False, False),
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])
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data[:] = []
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# Car signal (sender defined)
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c1 = Car(make="Volkswagon", model="Passat")
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c1.save()
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self.assertEqual(data, [
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(c1, False),
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c1,
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c1,
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(c1, True, False),
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])
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data[:] = []
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# Calling an internal method purely so that we can trigger a "raw" save.
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p1.save_base(raw=True)
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self.assertEqual(data, [
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(p1, True),
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p1,
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(p1, False, True),
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])
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data[:] = []
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signals.pre_delete.connect(pre_delete_handler)
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signals.post_delete.connect(post_delete_handler)
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try:
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p1 = Person.objects.create(first_name="John", last_name="Smith")
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p1.delete()
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self.assertEqual(data, [
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(p1, False),
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@ -121,27 +121,14 @@ class SignalTests(TestCase):
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p2 = Person(first_name="James", last_name="Jones")
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p2.id = 99999
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p2.save()
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self.assertEqual(data, [
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(p2, False),
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p2,
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(p2, True, False),
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])
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data[:] = []
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p2.id = 99998
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p2.save()
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self.assertEqual(data, [
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(p2, False),
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p2,
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(p2, True, False),
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])
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data[:] = []
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p2.delete()
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self.assertEqual(data, [
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(p2, False),
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(p2, False)
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])
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data[:] = []
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self.assertQuerysetEqual(
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Person.objects.all(), [
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@ -149,29 +136,102 @@ class SignalTests(TestCase):
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],
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six.text_type
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)
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finally:
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signals.post_delete.disconnect(pre_delete_handler)
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signals.pre_delete.disconnect(post_delete_handler)
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signals.post_delete.disconnect(post_delete_test)
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signals.pre_delete.disconnect(pre_delete_test)
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signals.post_save.disconnect(post_save_test)
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signals.pre_save.disconnect(pre_save_test)
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signals.pre_save.disconnect(pre_save_decorator_test)
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signals.pre_save.disconnect(pre_save_decorator_sender_test, sender=Car)
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def test_decorators(self):
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data = []
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# Check that all our signals got disconnected properly.
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post_signals = (
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len(signals.pre_save.receivers),
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len(signals.post_save.receivers),
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len(signals.pre_delete.receivers),
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len(signals.post_delete.receivers),
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)
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self.assertEqual(pre_signals, post_signals)
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@receiver(signals.pre_save)
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def decorated_handler(signal, sender, instance, **kwargs):
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data.append(instance)
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@receiver(signals.pre_save, sender=Car)
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def decorated_handler_with_sender_arg(signal, sender, instance, **kwargs):
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data.append(instance)
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try:
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c1 = Car.objects.create(make="Volkswagon", model="Passat")
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self.assertEqual(data, [c1, c1])
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finally:
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signals.post_delete.disconnect(decorated_handler)
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signals.pre_delete.disconnect(decorated_handler_with_sender_arg, sender=Car)
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def test_save_and_delete_signals_with_m2m(self):
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data = []
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def pre_save_handler(signal, sender, instance, **kwargs):
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data.append('pre_save signal, %s' % instance)
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if kwargs.get('raw'):
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data.append('Is raw')
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def post_save_handler(signal, sender, instance, **kwargs):
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data.append('post_save signal, %s' % instance)
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if 'created' in kwargs:
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if kwargs['created']:
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data.append('Is created')
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else:
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data.append('Is updated')
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if kwargs.get('raw'):
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data.append('Is raw')
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def pre_delete_handler(signal, sender, instance, **kwargs):
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data.append('pre_save signal, %s' % instance)
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data.append('instance.id is not None: %s' % (instance.id is not None))
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def post_delete_handler(signal, sender, instance, **kwargs):
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data.append('post_delete signal, %s' % instance)
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data.append('instance.id is not None: %s' % (instance.id is not None))
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signals.pre_save.connect(pre_save_handler)
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signals.post_save.connect(post_save_handler)
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signals.pre_delete.connect(pre_delete_handler)
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signals.post_delete.connect(post_delete_handler)
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try:
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a1 = Author.objects.create(name='Neal Stephenson')
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self.assertEqual(data, [
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"pre_save signal, Neal Stephenson",
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"post_save signal, Neal Stephenson",
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"Is created"
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])
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data[:] = []
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b1 = Book.objects.create(name='Snow Crash')
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self.assertEqual(data, [
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"pre_save signal, Snow Crash",
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"post_save signal, Snow Crash",
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"Is created"
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])
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data[:] = []
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# Assigning and removing to/from m2m shouldn't generate an m2m signal.
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b1.authors = [a1]
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self.assertEqual(data, [])
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b1.authors = []
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self.assertEqual(data, [])
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finally:
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signals.post_delete.disconnect(pre_save_handler)
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signals.pre_delete.disconnect(post_save_handler)
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signals.post_save.disconnect(pre_delete_handler)
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signals.pre_save.disconnect(post_delete_handler)
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def test_disconnect_in_dispatch(self):
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"""
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Test that signals that disconnect when being called don't mess future
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dispatching.
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"""
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a, b = MyReceiver(1), MyReceiver(2)
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class Handler(object):
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def __init__(self, param):
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self.param = param
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self._run = False
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def __call__(self, signal, sender, **kwargs):
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self._run = True
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signal.disconnect(receiver=self, sender=sender)
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a, b = Handler(1), Handler(2)
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signals.post_save.connect(sender=Person, receiver=a)
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signals.post_save.connect(sender=Person, receiver=b)
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Person.objects.create(first_name='John', last_name='Smith')
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@ -1,19 +0,0 @@
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from django.db import models
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from django.utils.encoding import python_2_unicode_compatible
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@python_2_unicode_compatible
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class Author(models.Model):
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name = models.CharField(max_length=20)
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def __str__(self):
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return self.name
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@python_2_unicode_compatible
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class Book(models.Model):
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name = models.CharField(max_length=20)
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authors = models.ManyToManyField(Author)
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def __str__(self):
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return self.name
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@ -1,95 +0,0 @@
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from __future__ import unicode_literals
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from django.db import models
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from django.test import TestCase
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from .models import Author, Book
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class SignalsRegressTests(TestCase):
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"""
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Testing signals before/after saving and deleting.
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"""
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def get_signal_output(self, fn, *args, **kwargs):
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# Flush any existing signal output
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self.signal_output = []
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fn(*args, **kwargs)
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return self.signal_output
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def pre_save_test(self, signal, sender, instance, **kwargs):
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self.signal_output.append('pre_save signal, %s' % instance)
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if kwargs.get('raw'):
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self.signal_output.append('Is raw')
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def post_save_test(self, signal, sender, instance, **kwargs):
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self.signal_output.append('post_save signal, %s' % instance)
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if 'created' in kwargs:
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if kwargs['created']:
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self.signal_output.append('Is created')
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else:
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self.signal_output.append('Is updated')
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if kwargs.get('raw'):
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self.signal_output.append('Is raw')
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def pre_delete_test(self, signal, sender, instance, **kwargs):
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self.signal_output.append('pre_save signal, %s' % instance)
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self.signal_output.append('instance.id is not None: %s' % (instance.id is not None))
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def post_delete_test(self, signal, sender, instance, **kwargs):
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self.signal_output.append('post_delete signal, %s' % instance)
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self.signal_output.append('instance.id is not None: %s' % (instance.id is not None))
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def setUp(self):
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self.signal_output = []
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# Save up the number of connected signals so that we can check at the end
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# that all the signals we register get properly unregistered (#9989)
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self.pre_signals = (len(models.signals.pre_save.receivers),
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len(models.signals.post_save.receivers),
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len(models.signals.pre_delete.receivers),
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len(models.signals.post_delete.receivers))
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models.signals.pre_save.connect(self.pre_save_test)
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models.signals.post_save.connect(self.post_save_test)
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models.signals.pre_delete.connect(self.pre_delete_test)
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models.signals.post_delete.connect(self.post_delete_test)
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def tearDown(self):
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models.signals.post_delete.disconnect(self.post_delete_test)
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models.signals.pre_delete.disconnect(self.pre_delete_test)
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models.signals.post_save.disconnect(self.post_save_test)
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models.signals.pre_save.disconnect(self.pre_save_test)
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# Check that all our signals got disconnected properly.
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post_signals = (len(models.signals.pre_save.receivers),
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len(models.signals.post_save.receivers),
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len(models.signals.pre_delete.receivers),
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len(models.signals.post_delete.receivers))
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self.assertEqual(self.pre_signals, post_signals)
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def test_model_signals(self):
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""" Model saves should throw some signals. """
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a1 = Author(name='Neal Stephenson')
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self.assertEqual(self.get_signal_output(a1.save), [
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"pre_save signal, Neal Stephenson",
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"post_save signal, Neal Stephenson",
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"Is created"
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])
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b1 = Book(name='Snow Crash')
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self.assertEqual(self.get_signal_output(b1.save), [
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"pre_save signal, Snow Crash",
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"post_save signal, Snow Crash",
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"Is created"
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])
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def test_m2m_signals(self):
|
||||
""" Assigning and removing to/from m2m shouldn't generate an m2m signal """
|
||||
|
||||
b1 = Book(name='Snow Crash')
|
||||
self.get_signal_output(b1.save)
|
||||
a1 = Author(name='Neal Stephenson')
|
||||
self.get_signal_output(a1.save)
|
||||
self.assertEqual(self.get_signal_output(setattr, b1, 'authors', [a1]), [])
|
||||
self.assertEqual(self.get_signal_output(setattr, b1, 'authors', []), [])
|
||||
Loading…
Reference in New Issue