Only run tests when the db can update conflicts.

simple_history/tests/tests/test_utils.py

@@ -6,7 +6,13 @@
 import django
 from django.contrib.auth import get_user_model
 from django.db import IntegrityError, transaction
-from django.test import TestCase, TransactionTestCase, override_settings, tag
+from django.test import (
+    TestCase,
+    TransactionTestCase,
+    override_settings,
+    skipUnlessDBFeature,
+    tag,
+)
 from django.utils import timezone
 
 from simple_history.exceptions import AlternativeManagerError, NotHistoricalModelError
@@ -258,6 +264,7 @@ def test_bulk_create_history_with_duplicates_ignore_conflicts(self):
         self.assertEqual(PollWithUniqueQuestion.objects.count(), 2)
         self.assertEqual(PollWithUniqueQuestion.history.count(), 2)
 
+    @skipUnlessDBFeature("supports_update_conflicts")
     def test_bulk_create_history_with_duplicates_update_conflicts_create_only_field(
         self,
     ):