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from __future__ import unicode_literals
import pickle
from django.contrib.auth.models import User
from django.test import TestCase
from django.utils import six
from django.utils.functional import SimpleLazyObject
class TestUtilsSimpleLazyObjectDjangoTestCase(TestCase):
def test_pickle_py2_regression(self):
# See ticket #20212
user = User.objects.create_user('johndoe', 'john@example.com', 'pass')
x = SimpleLazyObject(lambda: user)
# This would fail with "TypeError: can't pickle instancemethod objects",
# only on Python 2.X.
pickle.dumps(x)
# Try the variant protocol levels.
pickle.dumps(x, 0)
pickle.dumps(x, 1)
pickle.dumps(x, 2)
if six.PY2:
import cPickle
# This would fail with "TypeError: expected string or Unicode object, NoneType found".
cPickle.dumps(x)
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