var protobufjs = require('protobufjs');
var ro = protobufjs.loadSync('./test.proto');

var test = ro.lookup('test.Test');
var enc = test.encode({int_64: '314159265358979'}).finish();
var dec = test.decode(enc);

if (dec.int_64 === '314159265358979') {
  console.log('Test passed.');
} else {
  console.log(dec.int_64 + ' != 314159265358979 (expected)');
}