Fixed #35334 -- Removed supports_sequence_reset feature flag

django/db/backends/base/features.py

@@ -126,9 +126,6 @@ class BaseDatabaseFeatures:
     # in the SQL standard.
     supports_tablespaces = False
 
-    # Does the backend reset sequences between tests?
-    supports_sequence_reset = True
-
     # Can the backend introspect the default value of a column?
     can_introspect_default = True
 

django/db/backends/oracle/features.py

@@ -30,7 +30,6 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     truncates_names = True
     supports_comments = True
     supports_tablespaces = True
-    supports_sequence_reset = False
     can_introspect_materialized_views = True
     atomic_transactions = False
     nulls_order_largest = True

django/test/testcases.py

@@ -1157,15 +1157,14 @@ class TransactionTestCase(SimpleTestCase):
 
     def _reset_sequences(self, db_name):
         conn = connections[db_name]
-        if conn.features.supports_sequence_reset:
+        sql_list = conn.ops.sequence_reset_by_name_sql(
-            sql_list = conn.ops.sequence_reset_by_name_sql(
+            no_style(), conn.introspection.sequence_list()
-                no_style(), conn.introspection.sequence_list()
+        )
-            )
+        if sql_list:
-            if sql_list:
+            with transaction.atomic(using=db_name):
-                with transaction.atomic(using=db_name):
+                with conn.cursor() as cursor:
-                    with conn.cursor() as cursor:
+                    for sql in sql_list:
-                        for sql in sql_list:
+                        cursor.execute(sql)
-                            cursor.execute(sql)
 
     def _fixture_setup(self):
         for db_name in self._databases_names(include_mirrors=False):

tests/backends/base/test_operations.py

@@ -225,11 +225,10 @@ class SqlFlushTests(TransactionTestCase):
         with transaction.atomic():
             self.assertIs(Author.objects.exists(), False)
             self.assertIs(Book.objects.exists(), False)
-            if connection.features.supports_sequence_reset:
+            author = Author.objects.create(name="F. Scott Fitzgerald")
-                author = Author.objects.create(name="F. Scott Fitzgerald")
+            self.assertEqual(author.pk, 1)
-                self.assertEqual(author.pk, 1)
+            book = Book.objects.create(author=author)
-                book = Book.objects.create(author=author)
+            self.assertEqual(book.pk, 1)
-                self.assertEqual(book.pk, 1)
 
 
 class DeprecationTests(TestCase):

tests/test_runner/tests.py

@@ -16,7 +16,7 @@ from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured
 from django.core.management import call_command
 from django.core.management.base import CommandError, SystemCheckError
-from django.test import SimpleTestCase, TransactionTestCase, skipUnlessDBFeature
+from django.test import SimpleTestCase, TransactionTestCase
 from django.test.runner import (
     DiscoverRunner,
     Shuffler,
@@ -943,7 +943,6 @@ class SetupDatabasesTests(unittest.TestCase):
         )
 
 
-@skipUnlessDBFeature("supports_sequence_reset")
 class AutoIncrementResetTest(TransactionTestCase):
     """
     Creating the same models in different test methods receive the same PK