| // Copyright (C) 2015 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| es6id: 23.1.3.3 |
| description: > |
| Deleting an entry does not break a [[MapData]] List. |
| info: | |
| Map.prototype.delete ( key ) |
| |
| 4. Let entries be the List that is the value of M’s [[MapData]] internal slot. |
| 5. Repeat for each Record {[[key]], [[value]]} p that is an element of entries, |
| a. If p.[[key]] is not empty and SameValueZero(p.[[key]], key) is true, then |
| i. Set p.[[key]] to empty. |
| ii. Set p.[[value]] to empty. |
| iii. Return true. |
| ... |
| ---*/ |
| |
| var m = new Map([ |
| ['a', 1], |
| ['b', 2], |
| ['c', 3] |
| ]); |
| var e = m.entries(); |
| |
| e.next(); |
| m.delete('b'); |
| |
| var n = e.next(); |
| |
| assert.sameValue(n.value[0], 'c'); |
| assert.sameValue(n.value[1], 3); |
| |
| n = e.next(); |
| assert.sameValue(n.value, undefined); |
| assert.sameValue(n.done, true); |
