Add Django main to tox envlist.

pytest_django/fixtures.py

@@ -144,6 +144,8 @@ def _django_db_fixture_helper(
     transactional: bool = False,
     reset_sequences: bool = False,
 ) -> None:
+    from django import VERSION
+
     if is_django_unittest(request):
         return
 
@@ -174,7 +176,19 @@ class PytestDjangoTestCase(test_case_class):  # type: ignore[misc,valid-type]
         if _databases is not None:
             databases = _databases
 
+        @classmethod
+        def django_tear_down_class(cls) -> None:
+            cls._remove_databases_failures()
+            if hasattr(cls, '_cls_modified_context'):
+                cls._cls_modified_context.disable()
+                delattr(cls, '_cls_modified_context')
+            if hasattr(cls, '_cls_overridden_context'):
+                cls._cls_overridden_context.disable()
+                delattr(cls, '_cls_overridden_context')
+
     PytestDjangoTestCase.setUpClass()
+    if VERSION >= (4, 0):
+        request.addfinalizer(PytestDjangoTestCase.django_tear_down_class)
     request.addfinalizer(PytestDjangoTestCase.tearDownClass)
 
     test_case = PytestDjangoTestCase(methodName="__init__")

tox.ini

@@ -1,8 +1,8 @@
 [tox]
 envlist =
-    py310-dj32-postgres
-    py39-dj{32,31,30,22}-postgres
-    py38-dj{32,31,30,22}-postgres
+    py310-dj{main,32}-postgres
+    py39-dj{main,32,31,30,22}-postgres
+    py38-dj{main,32,31,30,22}-postgres
     py37-dj{32,31,30,22}-postgres
     py36-dj{32,31,30,22}-postgres
     py35-dj{22}-postgres