f1e0b83e7bPR-URL: https://github.com/nodejs/node/pull/61898 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Filip Skokan <panva.ip@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
39 lines
919 B
JavaScript
39 lines
919 B
JavaScript
// Copyright 2026 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --js-sum-precise --allow-natives-syntax
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function assertSum(expected, iterable) {
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let res = Math.sumPrecise(iterable);
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assertEquals(expected, res);
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}
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// Modified Array Iterator -> Slow path
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(function TestModifiedArrayIteratorFromIterableForeach() {
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let arr = [1, 2];
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// Save original
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const originalIter = Array.prototype[Symbol.iterator];
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// Modify
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Array.prototype[Symbol.iterator] = function() {
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let i = 0;
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return {
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next() {
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if (i < 1) {
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i++;
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return { value: 99, done: false }; // Inject 99
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}
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return { done: true };
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}
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};
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};
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try {
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assertSum(99, arr);
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} finally {
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// Restore
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Array.prototype[Symbol.iterator] = originalIter;
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}
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})();
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