class CustomBitcoinProxy:
    def __init__(self, btc_conf_file, *args, **kwargs):
        self.__proxy__ = BitcoinProxy(btc_conf_file=btc_conf_file)

    def __getattr__(self, name):
        if name.startswith("__") and name.endswith("__"):
            # Python internal stuff
            raise AttributeError

        def f(*args):
            logging.debug(
                "Calling {name} with arguments {args}".format(name=name, args=args)
            )
            res = self.__proxy__._call(name, *args)
            logging.error(
                "Result for {name} call: {res}".format(
                    name=name,
                    res=res,
                )
            )
            if "createwallet" in name:
                self.__proxy__.service_url = "{}/wallet/{}".format(self.__proxy__.base_url, args[0])
            return res

        # Make debuggers show <function bitcoin.rpc.name> rather than <function
        # bitcoin.rpc.<lambda>>
        f.__name__ = name
        return f

def test_load_new_wallet(bitcoind):
    addr = bitcoind.rpc.getnewaddress()
    list_hash = bitcoind.rpc.generatetoaddress(10, addr)
    assert list_hash is not None

    bitcoind.rpc.createwallet("api")
    with pytest.raises(JSONRPCError):
        bitcoind.rpc.loadwallet("api")
        ## Raise because we need to change the url