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Fixed #36722 -- Allowed selecting zero in MySQL auto fields using expressions.

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This commit is contained in:
Clifford Gama 2025-11-10 13:28:07 +02:00
parent c4e07f94eb
commit e33dd72b6e
3 changed files with 18 additions and 7 deletions
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12
tests/backends/tests.py
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@ -19,6 +19,7 @@ from django.db import (
from django.db.backends.base.base import BaseDatabaseWrapper
from django.db.backends.signals import connection_created
from django.db.backends.utils import CursorWrapper
from django.db.models import BigAutoField, Value
from django.db.models.sql.constants import CURSOR
from django.test import (
TestCase,
@ -966,7 +967,7 @@ class ThreadTests(TransactionTestCase):
connection.dec_thread_sharing()
class MySQLPKZeroTests(TestCase):
class MySQLAutoPKZeroTests(TestCase):
"""
Zero as id for AutoField should raise exception in MySQL, because MySQL
does not allow zero for autoincrement primary key if the
@ -975,8 +976,15 @@ class MySQLPKZeroTests(TestCase):
@skipIfDBFeature("allows_auto_pk_0")
def test_zero_as_autoval(self):
with self.assertRaises(ValueError):
msg = "The database backend does not accept 0 as a value for AutoField."
with self.assertRaisesMessage(ValueError, msg):
Square.objects.create(id=0, root=0, square=1)
with self.assertRaisesMessage(ValueError, msg):
Square.objects.create(id=Value(0, BigAutoField()), root=0, square=1)
@skipIfDBFeature("allows_auto_pk_0")
def test_no_error_when_filtering_with_expression(self):
self.assertSequenceEqual(Square.objects.filter(id=Value(0, BigAutoField())), ())
class DBConstraintTestCase(TestCase):