Fixed #30661 -- Added models.SmallAutoField.

2 files changed, 18 insertions, 2 deletions

diff --git a/tests/many_to_one/models.py b/tests/many_to_one/models.py
index 6230129bbd..6e00fb18fa 100644
--- a/tests/many_to_one/models.py
+++ b/tests/many_to_one/models.py
@@ -27,8 +27,14 @@ class Article(models.Model):
         return self.headline
 
 
+class Country(models.Model):
+    id = models.SmallAutoField(primary_key=True)
+    name = models.CharField(max_length=50)
+
+
 class City(models.Model):
     id = models.BigAutoField(primary_key=True)
+    country = models.ForeignKey(Country, models.CASCADE, related_name='cities', null=True)
     name = models.CharField(max_length=50)
 
     def __str__(self):
diff --git a/tests/many_to_one/tests.py b/tests/many_to_one/tests.py
index e3121a7701..a926574b15 100644
--- a/tests/many_to_one/tests.py
+++ b/tests/many_to_one/tests.py
@@ -8,8 +8,9 @@ from django.test import TestCase
 from django.utils.translation import gettext_lazy
 
 from .models import (
-    Article, Category, Child, ChildNullableParent, City, District, First,
-    Parent, Record, Relation, Reporter, School, Student, Third, ToFieldChild,
+    Article, Category, Child, ChildNullableParent, City, Country, District,
+    First, Parent, Record, Relation, Reporter, School, Student, Third,
+    ToFieldChild,
 )
 
 
@@ -576,6 +577,15 @@ class ManyToOneTests(TestCase):
         District.objects.create(city=ny, name='Brooklyn')
         District.objects.create(city=ny, name='Manhattan')
 
+    def test_fk_to_smallautofield(self):
+        us = Country.objects.create(name='United States')
+        City.objects.create(country=us, name='Chicago')
+        City.objects.create(country=us, name='New York')
+
+        uk = Country.objects.create(name='United Kingdom', id=2 ** 11)
+        City.objects.create(country=uk, name='London')
+        City.objects.create(country=uk, name='Edinburgh')
+
     def test_multiple_foreignkeys(self):
         # Test of multiple ForeignKeys to the same model (bug #7125).
         c1 = Category.objects.create(name='First')