Fixed #31962 -- Made SessionMiddleware raise SessionInterrupted when session destroyed while request is processing.

tests/sessions_tests/tests.py

@@ -19,7 +19,9 @@ from django.contrib.sessions.backends.file import SessionStore as FileSession
 from django.contrib.sessions.backends.signed_cookies import (
     SessionStore as CookieSession,
 )
-from django.contrib.sessions.exceptions import InvalidSessionKey
+from django.contrib.sessions.exceptions import (
+    InvalidSessionKey, SessionInterrupted,
+)
 from django.contrib.sessions.middleware import SessionMiddleware
 from django.contrib.sessions.models import Session
 from django.contrib.sessions.serializers import (
@@ -28,7 +30,7 @@ from django.contrib.sessions.serializers import (
 from django.core import management
 from django.core.cache import caches
 from django.core.cache.backends.base import InvalidCacheBackendError
-from django.core.exceptions import ImproperlyConfigured, SuspiciousOperation
+from django.core.exceptions import ImproperlyConfigured
 from django.http import HttpResponse
 from django.test import (
     RequestFactory, SimpleTestCase, TestCase, ignore_warnings,
@@ -746,10 +748,10 @@ class SessionMiddlewareTests(TestCase):
             "The request's session was deleted before the request completed. "
             "The user may have logged out in a concurrent request, for example."
         )
-        with self.assertRaisesMessage(SuspiciousOperation, msg):
+        with self.assertRaisesMessage(SessionInterrupted, msg):
             # Handle the response through the middleware. It will try to save
             # the deleted session which will cause an UpdateError that's caught
-            # and raised as a SuspiciousOperation.
+            # and raised as a SessionInterrupted.
             middleware(request)
 
     def test_session_delete_on_end(self):