#29559: TransactionTestCase.reset_sequences doesn't reset sequences of auto
created
ManyToMany models
---------------------------------------------+------------------------
Reporter: Oliver Sauder | Owner: nobody
Type: Bug | Status: new
Component: Testing framework | Version: master
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
---------------------------------------------+------------------------
Consider following example:
{{{
class Person(models.Model):
first_name = models.CharField(max_length=20)
last_name = models.CharField(max_length=20)
friends = models.ManyToManyField('self')
class AutoIncrementResetTest(TransactionTestCase):
reset_sequences = True
def test_autoincrement_reset1(self):
p = Person.objects.create(first_name='Jack', last_name='Smith')
self.assertEqual(p.pk, 1)
p.friends.add(Person.objects.create(first_name='Jacky',
last_name='Smith'))
self.assertEqual(p.friends.through.objects.first().pk, 1)
def test_autoincrement_reset2(self):
p = Person.objects.create(first_name='Jack', last_name='Smith')
self.assertEqual(p.pk, 1)
p.friends.add(Person.objects.create(first_name='Jacky',
last_name='Smith'))
self.assertEqual(p.friends.through.objects.first().pk, 1)
}}}
Test **test_autoincrement_reset2** will fail with a much higher primary
key, indicating that sequence has not been properly reset. Tested this on
a Postgres database but I assume this error exist on other databases as
well.
--
Ticket URL: <https://code.djangoproject.com/ticket/29559>
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