Ticket #14274: 14274.diff

docs/topics/testing.txt

@@ -309 +309 @@
 but not gracefully. No details of the tests run before the interruption will
 be reported, and any test databases created by the run will not be destroyed.
 
+.. note::
+    It is a good idea to run your application's tests with
+    ``python -Wall manage.py test`` to catch deprecation
+    warnings that might be in your code. This is useful before
+    an upgrade, as well to catch places in your code that might
+    have a better implementation.
+
+
 Running tests outside the test runner
 -------------------------------------