flask test_client设置cookies

class TestCase(unittest.TestCase):
    session = None
    def setUp(self):
        self.app = create_app()
        self.app.testing = True
        ###########################################################
        # TODO: change settings
        # import tempfile
        # self.app.config['DATABASE'] = tempfile.mkstemp()
        ###########################################################
        self.client = self.app.test_client()
        self.login_required()

    def login_required(self):
        rv = self.client.post('/login', data=dict(
            account=PHONE,
            password=PASSWORD
        ))
        cookies = rv.headers.getlist('Set-Cookie')
        session = parse_cookie(cookies[0])['session']
        self.client.set_cookie('localhost', 'session', session)