Advanced deprecation warnings for Django 4.2.

tests/runtests.py

@@ -29,7 +29,10 @@ else:
     from django.test.runner import _init_worker, get_max_test_processes, parallel_type
     from django.test.selenium import SeleniumTestCaseBase
     from django.test.utils import NullTimeKeeper, TimeKeeper, get_runner
-    from django.utils.deprecation import RemovedInDjango50Warning
+    from django.utils.deprecation import (
+        RemovedInDjango50Warning,
+        RemovedInDjango51Warning,
+    )
     from django.utils.log import DEFAULT_LOGGING
 
 try:
@@ -42,6 +45,7 @@ else:
 
 # Make deprecation warnings errors to ensure no usage of deprecated features.
 warnings.simplefilter("error", RemovedInDjango50Warning)
+warnings.simplefilter("error", RemovedInDjango51Warning)
 # Make resource and runtime warning errors to ensure no usage of error prone
 # patterns.
 warnings.simplefilter("error", ResourceWarning)