def METHOD_NAME(self):
    """You must send the proper media type with your PUT request."""
    headers = {"Content-Type" : "application/json"}
    body = json.dumps(dict(settings={}))
    problem = self.controller.put(headers, body)
    assert 415 == problem.status_code
    assert ('Expected vnd.librarysimplified/user-profile+json' ==
        problem.detail)