"use strict";

////////////////////////////////////////////////////////////////

/** @fileOverview Performance testing toolkit. */

////////////////////////////////////////////////////////////////

/* Invoce 'fn' function 'n' times with 'this' set to 'ctx'.

 * Use 'ctx' to initialise test and to pass state between calls. */

function perf(msg, fn, n, ctx) {

    if (typeof n !== "number" || n < 1)

        n = 1;

    var tsFrom = new Date().getTime();

    for (var i = 0; i < n; i++)

        fn.call(ctx);

    var tsTo = new Date().getTime();

    console.log(msg + ": %f ms, %d u/s", tsTo-tsFrom, i/(tsTo - tsFrom)*1000);

}