text: var RxOld = require('rx');
  var RxNew = require('../../../../index');
  
  module.exports = function fromWithString(suite) {
    var args = [];
    for (var i = 0; i < 25; i++) {
      args.push(i);
    }
    var argStr = args.join('');
  
    // add tests
    function _next(x) { }
    function _error(e) { }
    function _complete() { }
    return suite
      .add('old from (string) with immediate scheduler', function () {
        RxOld.Observable.from(argStr, null, null, RxOld.Scheduler.immediate).subscribe(_next, _error, _complete);
      })
      .add('new from (string) with immediate scheduler', function () {
        RxNew.Observable.from(argStr, null, null).subscribe(_next, _error, _complete);
      });
  };