def test_form_valid(self, user: User, rf: RequestFactory):
view = UserUpdateView()
request = rf.get("/fake-url/")
# Add the session/message middleware to the request
SessionMiddleware().process_request(request)
MessageMiddleware().process_request(request)
request.user = user
view.request = request
# Initialize the form
form = UserChangeForm()
form.cleaned_data = []
view.form_valid(form)
messages_sent = [m.message for m in messages.get_messages(request)]
assert messages_sent == ["Information successfully updated"]
