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Diffstat (limited to 'js/src/tests/test262/built-ins/Array/prototype/reduceRight/length-near-integer-limit.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/prototype/reduceRight/length-near-integer-limit.js | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/reduceRight/length-near-integer-limit.js b/js/src/tests/test262/built-ins/Array/prototype/reduceRight/length-near-integer-limit.js new file mode 100644 index 0000000000..165ecebf1d --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/prototype/reduceRight/length-near-integer-limit.js @@ -0,0 +1,59 @@ +// 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); |