def METHOD_NAME(user, default_category):
    notification = notify_user(user, "TEST", category=default_category)
    assert notification
    assert notification.user == user
    assert notification.verb == "TEST"
    assert notification.actor is None
    assert notification.actor_name is None
    assert notification.category == default_category
    assert notification.thread is None
    assert notification.thread_title is None
    assert notification.post is None
    db_notification = Notification.objects.get(id=notification.id)
    assert db_notification.user == user
    assert db_notification.verb == "TEST"
    assert db_notification.actor is None
    assert db_notification.actor_name is None
    assert db_notification.category == default_category
    assert db_notification.thread is None
    assert db_notification.thread_title is None
    assert db_notification.post is None