fix: Correction de l'affichage du message d'erreur lors de l'authentification.

venv/lib/python3.10/site-packages/django/contrib/messages/test.py

@@ -0,0 +1,11 @@
+from .api import get_messages
+
+# Make unittest ignore frames in this module when reporting failures.
+__unittest = True
+
+
+class MessagesTestMixin:
+    def assertMessages(self, response, expected_messages, *, ordered=True):
+        request_messages = list(get_messages(response.wsgi_request))
+        assertion = self.assertEqual if ordered else self.assertCountEqual
+        assertion(request_messages, expected_messages)