summaryrefslogtreecommitdiff
path: root/test/built-ins/Array/prototype/splice/clamps-length-to-integer-limit.js
blob: a376e42e7129125b8697cfab4fd9516a25d6c61f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
// 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.splice
description: >
  Length values exceeding 2^53-1 are clamped to 2^53-1.
info: |
  1. ...
  2. Let len be ? ToLength(? Get(O, "length")).
  ...
  5. If the number of actual arguments is 0, then
    a. Let insertCount be 0.
    b. Let actualDeleteCount be 0.
  ...
  19. Perform ? Set(O, "length", len - actualDeleteCount + itemCount, true).
  ...
---*/

var arrayLike = {};

arrayLike.length = 2**53 - 1;
Array.prototype.splice.call(arrayLike);
assert.sameValue(arrayLike.length, 2**53 - 1, "Length is 2**53 - 1");

arrayLike.length = 2**53;
Array.prototype.splice.call(arrayLike);
assert.sameValue(arrayLike.length, 2**53 - 1, "Length is 2**53");

arrayLike.length = 2**53 + 2;
Array.prototype.splice.call(arrayLike);
assert.sameValue(arrayLike.length, 2**53 - 1, "Length is 2**53 + 2");

arrayLike.length = Infinity;
Array.prototype.splice.call(arrayLike);
assert.sameValue(arrayLike.length, 2**53 - 1, "Length is Infinity");