map.js - mozsearch

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// Copyright (C) 2015 the V8 project authors. All rights reserved.

// This code is governed by the BSD license found in the LICENSE file.

/*---

description: Map traversal using for..of

info: |

    Map instances should be able to be traversed using a `for...of` loop.

es6id: 13.6.4

features: [Map]

---*/

var map = new Map();

var obj = {};

var iterationCount = 0;

var first = [0, 'a'];

var second = [true, false];

var third = [null, undefined];

var fourth = [NaN, obj];

map.set(0, 'a');

map.set(true, false);

map.set(null, undefined);

map.set(NaN, obj);

for (var x of map) {

  assert.sameValue(x[0], first[0]);

  assert.sameValue(x[1], first[1]);

  first = second;

  second = third;

  third = fourth;

  fourth = null;

  iterationCount += 1;

assert.sameValue(iterationCount, 4);

reportCompare(0, 0);