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// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-array.prototype.reduceright
description: >
Elements are processed in an array-like object
whose "length" property is near the integer limit.
info: |
Array.prototype.reduceRight ( callbackfn [ , initialValue ] )
1. Let O be ? ToObject(this value).
2. Let len be ? LengthOfArrayLike(O).
[...]
9. Repeat, while k ≥ 0
a. Let Pk be ! ToString(k).
b. Let kPresent be ? HasProperty(O, Pk).
c. If kPresent is true, then
i. Let kValue be ? Get(O, Pk).
ii. Set accumulator to ? Call(callbackfn, undefined, « accumulator, kValue, k, O »).
[...]
includes: [compareArray.js]
---*/
var arrayLike = {
length: Number.MAX_SAFE_INTEGER,
};
arrayLike[Number.MAX_SAFE_INTEGER - 1] = 1;
arrayLike[Number.MAX_SAFE_INTEGER - 3] = 3;
var accumulator = function(acc, el, index) {
acc.push([el, index]);
if (el === 3) {
throw acc;
}
return acc;
};
try {
Array.prototype.reduceRight.call(arrayLike, accumulator, []);
throw new Test262Error("should not be called");
} catch (acc) {
assert.sameValue(acc.length, 2, 'The value of acc.length is expected to be 2');
assert.compareArray(
acc[0],
[1, Number.MAX_SAFE_INTEGER - 1],
'The value of acc[0] is expected to be [1, Number.MAX_SAFE_INTEGER - 1]'
);
assert.compareArray(
acc[1],
[3, Number.MAX_SAFE_INTEGER - 3],
'The value of acc[1] is expected to be [3, Number.MAX_SAFE_INTEGER - 3]'
);
}
reportCompare(0, 0);
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