How to use the websockify.token_plugins.JWTTokenApi function in websockify

def test_asymmetric_jws_token_plugin_with_illigal_key_exception(self):
            key = jwt.JWK()
            private_key = open("./tests/fixtures/private.pem", "rb").read()
            key.import_from_pem(private_key)
            jwt_token = jwt.JWT({"alg": "RS256"}, {'host': "remote_host", 'port': "remote_port"})
            jwt_token.make_signed_token(key)
            self.handler.path = "https://localhost:6080/websockify?token={jwt_token}".format(jwt_token=jwt_token.serialize())

            self.stubs.Set(websocketproxy.ProxyRequestHandler, 'send_auth_error',
                        staticmethod(lambda *args, **kwargs: None))

            self.handler.server.token_plugin = token_plugins.JWTTokenApi("wrong.pub")
            self.assertRaises(self.handler.server.EClose, 
                            self.handler.validate_connection)

def test_asymmetric_jws_token_plugin(self):
            key = jwt.JWK()
            private_key = open("./tests/fixtures/private.pem", "rb").read()
            key.import_from_pem(private_key)
            jwt_token = jwt.JWT({"alg": "RS256"}, {'host': "remote_host", 'port': "remote_port"})
            jwt_token.make_signed_token(key)
            self.handler.path = "https://localhost:6080/websockify?token={jwt_token}".format(jwt_token=jwt_token.serialize())

            self.stubs.Set(websocketproxy.ProxyRequestHandler, 'send_auth_error',
                        staticmethod(lambda *args, **kwargs: None))

            self.handler.server.token_plugin = token_plugins.JWTTokenApi("./tests/fixtures/public.pem")
            self.handler.validate_connection()

            self.assertEqual(self.handler.server.target_host, "remote_host")
            self.assertEqual(self.handler.server.target_port, "remote_port")

def test_symmetric_jws_token_plugin_with_illigal_key_exception(self):
            secret = open("./tests/fixtures/symmetric.key").read()
            key = jwt.JWK()
            key.import_key(kty="oct",k=secret)
            jwt_token = jwt.JWT({"alg": "HS256"}, {'host': "remote_host", 'port': "remote_port"})
            jwt_token.make_signed_token(key)
            self.handler.path = "https://localhost:6080/websockify?token={jwt_token}".format(jwt_token=jwt_token.serialize())

            self.stubs.Set(websocketproxy.ProxyRequestHandler, 'send_auth_error',
                        staticmethod(lambda *args, **kwargs: None))

            self.handler.server.token_plugin = token_plugins.JWTTokenApi("wrong_sauce")
            self.assertRaises(self.handler.server.EClose, 
                            self.handler.validate_connection)

private_key_data = open("./tests/fixtures/private.pem", "rb").read()
            public_key_data = open("./tests/fixtures/public.pem", "rb").read()
            private_key.import_from_pem(private_key_data)
            public_key.import_from_pem(public_key_data)
            jwt_token = jwt.JWT({"alg": "RS256"}, {'host': "remote_host", 'port': "remote_port"})
            jwt_token.make_signed_token(private_key)
            jwe_token = jwt.JWT(header={"alg": "RSA1_5", "enc": "A256CBC-HS512"},
                        claims=jwt_token.serialize())
            jwe_token.make_encrypted_token(public_key)

            self.handler.path = "https://localhost:6080/websockify?token={jwt_token}".format(jwt_token=jwe_token.serialize())

            self.stubs.Set(websocketproxy.ProxyRequestHandler, 'send_auth_error',
                        staticmethod(lambda *args, **kwargs: None))

            self.handler.server.token_plugin = token_plugins.JWTTokenApi("./tests/fixtures/private.pem")
            self.handler.validate_connection()

            self.assertEqual(self.handler.server.target_host, "remote_host")
            self.assertEqual(self.handler.server.target_port, "remote_port")