node/test/addons/buffer-free-callback/test.js

'use strict';
// Flags: --expose-gc

require('../../common');
var assert = require('assert');
var binding = require('./build/Release/binding');

function check(size) {
  var buf = binding.alloc(size);
  var slice = buf.slice(size >>> 1);

  buf = null;
  binding.check(slice);
  slice = null;
  gc();
  gc();
  gc();
}

check(64);

// Empty ArrayBuffer does not allocate data, worth checking
check(0);