def METHOD_NAME(self):
    dce, rpctransport = self.connect()
    request = rprn.RpcGetPrinterDriverDirectory()
    request['pName'] = NULL
    request['pEnvironment'] = NULL
    request['Level'] = 1
    request['pDriverDirectory'] = NULL
    request['cbBuf'] = 0
    request.dump()
    with assertRaisesRegex(self, rprn.DCERPCSessionError, "ERROR_INSUFFICIENT_BUFFER"):
        dce.request(request)