// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// This benchmark is based on the six-speed benchmark build output.
// Copyright 2014 Kevin Decker <https://github.com/kpdecker/six-speed/>

new BenchmarkSuite(
  "ES5",
  [1000],
  [new Benchmark("ES5", false, false, 0, ES5, Setup)]
);

var map;

function Setup() {
  map = {};

  for (var i = 0; i < 500; i++) {
    map[i] = i;
  }
}

function ES5() {
  return map["499"] === 499;
}
