map-expand.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 entry insertion during traversal using for..of

info: |

    New entries inserted into a Map instance during traversal should be

    visited.

es6id: 13.6.4

features: [Map]

---*/

var map = new Map();

var iterationCount = 0;

var first = [0, 'a'];

var second = [1, 'b'];

map.set(0, 'a');

for (var x of map) {

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

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

  first = second;

  second = null;

  map.set(1, 'b');

  iterationCount += 1;

assert.sameValue(iterationCount, 2);

reportCompare(0, 0);