gistfile1.js

var cookie = require('./')

var acc, x;
console.log(x = cookie.sign('hello', 'test'))

function quantile(arr, from, to) {
   from = Math.floor((arr.length) * from)
   to = Math.ceil((arr.length) * to)
   var s = 0
   arr = arr.sort()
   for (var x=from; x<to; x++) {
      s += arr[x]
   }
   return ~~(s/(to-from))
}

function shuffle(o){
    for(var j, x, i = o.length; i; j = Math.floor(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x);
    return o;
}

var iterations = 100000 // <-- change this to slow down/speed up test

var sums = {}
var arr = []
var sum_all = [0,0]
for (var z=0;; z++) {
   shuffle([10, 15, 20, 25, 30, 35, 40, 45]).forEach(function(str) {
      var n = x.split('')
      n[str] = '_'
      n = n.join('')

      var d = process.hrtime()
      for (var i=0; i<iterations; i++) {
         //acc = cookie.unsign(n, 'test')
         acc = n === x ? n : false
      }
      var diff = process.hrtime(d)
      var time = diff[0] * 1e9 + diff[1]

      arr[str] = arr[str] || []
      arr[str].push(time)
      console.log(str, n, time)

      sum_all[0]++
      sum_all[1] += time
   })

   ;[10, 15, 20, 25, 30, 35, 40, 45].forEach(function(str) {
      console.log('|', str, quantile(arr[str], 0.2, 0.8), [0/5,1/5,2/5,3/5,4/5].map(function(x) {return quantile(arr[str], x, x + 1/5)}))
   })
   console.log('= iterations:', sum_all[0] * iterations, ', time=', ~~(sum_all[1]/1000000000), 'sec')
}