| // Copyright (C) 2017 André Bargull. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-array.prototype.push |
| description: > |
| A value is inserted in an array-like object whose length property is near the integer limit. |
| info: | |
| ... |
| 2. Let len be ? ToLength(? Get(O, "length")). |
| 3. Let items be a List whose elements are, in left to right order, the |
| arguments that were passed to this function invocation. |
| ... |
| 5. Repeat, while items is not empty |
| ... |
| 7. Perform ? Set(O, "length", len, true). |
| ... |
| ---*/ |
| |
| var arrayLike = { |
| "9007199254740989": "9007199254740989", |
| /* "9007199254740990": empty */ |
| "9007199254740991": "9007199254740991", |
| length: 2 ** 53 - 2 |
| }; |
| |
| Array.prototype.push.call(arrayLike, "new-value"); |
| |
| assert.sameValue(arrayLike.length, 2 ** 53 - 1, |
| "New arrayLike.length is 2**53 - 1"); |
| |
| assert.sameValue(arrayLike["9007199254740989"], "9007199254740989", |
| "arrayLike['9007199254740989'] is unchanged"); |
| |
| assert.sameValue(arrayLike["9007199254740990"], "new-value", |
| "arrayLike['9007199254740990'] has new value"); |
| |
| assert.sameValue(arrayLike["9007199254740991"], "9007199254740991", |
| "arrayLike['9007199254740991'] is unchanged"); |