| // 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 not be |
| visited if they are removed prior to visitation. |
| es6id: 13.6.4 |
| features: [Map] |
| ---*/ |
| |
| var map = new Map(); |
| var iterationCount = 0; |
| |
| map.set(0, 'a'); |
| |
| for (var x of map) { |
| assert.sameValue(x[0], 0); |
| assert.sameValue(x[1], 'a'); |
| |
| map.set(1, 'b'); |
| map.delete(1); |
| |
| iterationCount += 1; |
| } |
| |
| assert.sameValue(iterationCount, 1); |
