Here's the models:
# models.py
class Article(models.Model):
title = models.CharField(max_length=100)
# urls.py
urlpatterns = patterns('',
(r'^delete-rolledback/$', delete_rolledback),
)
# views.py
def delete_rolledback(request):
transaction.enter_transaction_management()
transaction.managed(True)
qs = Article.objects.all()
for article in qs:
if article.title.lower().startswith(request.GET.get
('startswith')):
article.delete()
break
transaction.rollback()
return HttpResponse("Rolled back!")
# tests.py
from django.test import TestCase
from news.models import Article
class SimpleTest(TestCase):
def setUp(self):
Article.objects.create(title=u'Abraham')
Article.objects.create(title=u'Ben')
Article.objects.create(title=u'Ancor')
Article.objects.create(title=u'Wat')
super(SimpleTest, self).setUp()
def test_deletion(self):
count_before = Article.objects.count()
assert count_before == 4
r = self.client.get('/news/delete-rolledback/',
dict(startswith='a'))
assert r.content.count("Rolled back")
count_after = Article.objects.count()
assert count_after == 4, count_after
When I run these tests (with postgres or with sqlite) I get this
assertion error:
Traceback (most recent call last):
...
AssertionError: 3
If someone more clued up than me could take a look at this and confirm
that it is a Django bug I can start looking into explaining what's
wrong and possibilities of a patch.
I've found this ticket (http://code.djangoproject.com/ticket/4758)
where someone has experienced similar problems when using Oracle. But
only for Oracle; he claims the same code *works* with Postgres.
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