Simple test wrapper for testing code speed.

timedTest.js

/**
 * Test code speed.
 * 
 *    timeTest('#forEach() test', 10000, function(count) {
 *      someArray.forEach(function(){});
 *    });
 */
function timedTest(name, count, test) {
  if (count !== +count) throw new TypeError('count must be a number');
  // Make sure we have a uint to avoid infinite loop.
  if (count !== (count >>> 0)) count = ~count + 1;
  var finalResult;
  console.group(name);
  console.log('Testing %d times', count);
  console.time(name);
  while (count--) finalResult = test(count);
  console.timeEnd(name);
  console.log('Result: %o', finalResult);
  console.groupEnd(name);
};