| // 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 removal and re-insertion during traversal using for..of | |
| info: > | |
| Entries removed from a Map instance during traversal should be visited if | |
| they are re-inserted prior to iterator exhaustion. | |
| 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'); | |
| map.set(1, 'b'); | |
| for (var x of map) { | |
| assert.sameValue(x[0], first[0]); | |
| assert.sameValue(x[1], first[1]); | |
| first = second; | |
| second = null; | |
| if (first !== null) { | |
| map.delete(1); | |
| map.set(1, 'b'); | |
| } | |
| iterationCount += 1; | |
| } | |
| assert.sameValue(iterationCount, 2); |