Updated docs for #1188

Added a changelog entry, and removed the
"Using django-webtest with Middleware" section in `common_issues.rst`,
as it's not an issue anymore now that `HistoricalRecords.context.request`
is deleted in all cases (due to using a `finally` block).

CHANGES.rst

@@ -16,6 +16,8 @@ Unreleased
 - Dropped support for Django 4.0, which reached end-of-life on 2023-04-01 (gh-1202)
 - Added support for Django 4.2 (gh-1202)
 - Made ``bulk_update_with_history()`` return the number of model rows updated (gh-1206)
+- Fixed ``HistoryRequestMiddleware`` not cleaning up after itself (i.e. deleting
+  ``HistoricalRecords.context.request``) under some circumstances (gh-1188)
 
 3.3.0 (2023-03-08)
 ------------------

docs/common_issues.rst

@@ -124,29 +124,6 @@ Tracking Custom Users
     cannot be set directly on a swapped user model because of the user
     foreign key to track the user making changes.
 
-Using django-webtest with Middleware
-------------------------------------
-
-When using django-webtest_ to test your Django project with the
-django-simple-history middleware, you may run into an error similar to the
-following::
-
-    django.db.utils.IntegrityError: (1452, 'Cannot add or update a child row: a foreign key constraint fails (`test_env`.`core_historicaladdress`, CONSTRAINT `core_historicaladdress_history_user_id_0f2bed02_fk_user_user_id` FOREIGN KEY (`history_user_id`) REFERENCES `user_user` (`id`))')
-
-.. _django-webtest: https://github.com/django-webtest/django-webtest
-
-This error occurs because ``django-webtest`` sets
-``DEBUG_PROPAGATE_EXCEPTIONS`` to true preventing the middleware from cleaning
-up the request. To solve this issue, add the following code to any
-``clean_environment`` or ``tearDown`` method that
-you use:
-
-.. code-block:: python
-
-    from simple_history.middleware import HistoricalRecords
-    if hasattr(HistoricalRecords.context, 'request'):
-        del HistoricalRecords.context.request
-
 Using F() expressions
 ---------------------
 ``F()`` expressions, as described here_, do not work on models that have