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from __future__ import absolute_import
import pickle
import datetime
from django.test import TestCase
from .models import Group, Event, Happening
class PickleabilityTestCase(TestCase):
def assert_pickles(self, qs):
self.assertEqual(list(pickle.loads(pickle.dumps(qs))), list(qs))
def test_related_field(self):
g = Group.objects.create(name="Ponies Who Own Maybachs")
self.assert_pickles(Event.objects.filter(group=g.id))
def test_datetime_callable_default_all(self):
self.assert_pickles(Happening.objects.all())
def test_datetime_callable_default_filter(self):
self.assert_pickles(Happening.objects.filter(when=datetime.datetime.now()))
def test_lambda_as_default(self):
self.assert_pickles(Happening.objects.filter(name="test"))
def test_standalone_method_as_default(self):
self.assert_pickles(Happening.objects.filter(number1=1))
def test_staticmethod_as_default(self):
self.assert_pickles(Happening.objects.filter(number2=1))
def test_classmethod_as_default(self):
self.assert_pickles(Happening.objects.filter(number3=1))
def test_membermethod_as_default(self):
self.assert_pickles(Happening.objects.filter(number4=1))
def test_doesnotexist_exception(self):
# Ticket #17776
original = Event.DoesNotExist("Doesn't exist")
unpickled = pickle.loads(pickle.dumps(original))
# Exceptions are not equal to equivalent instances of themselves, so
# can't just use assertEqual(original, unpickled)
self.assertEqual(original.__class__, unpickled.__class__)
self.assertEqual(original.args, unpickled.args)
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