PerformanceTests/SixSpeed/tests/map-set-object/map-set-object.es6

function fn() {
  var map = new Map(),
      set = new Set(),
      key = {};

  for (var i = 0; i < 500; i++) {
    map.set(i, i);
    set.add(i);
  }

  map.set(key, 'bar');
  set.add(key);

  return map.has(key) && set.has(key);
}

assertEqual(fn(), true);
test(fn);