// 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)]);

function ES5() {
  var keys = [], values = [], set = [], key = {};

  for (var i = 0; i < 500; i++) {
    keys.push(i);
    values.push(i);
    set.push(i);
  }

  keys.push(key);
  values.push("bar");
  set.push(key);

  return set.indexOf(key) >= 0 && keys.indexOf(key) >= 0;
}
