mirror of https://github.com/tc39/test262.git
90 lines
2.3 KiB
JavaScript
90 lines
2.3 KiB
JavaScript
// Copyright (C) 2019 Leo Balter. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-performpromiseallsettled
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description: >
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Cannot tamper remainingElementsCount when Promise.allSettled resolve element function is called multiple times.
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info: |
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Runtime Semantics: PerformPromiseAllSettled ( iteratorRecord, constructor, resultCapability )
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4. Let remainingElementsCount be a new Record { [[Value]]: 1 }.
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...
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6.d ...
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ii. Set remainingElementsCount.[[value]] to remainingElementsCount.[[value]] − 1.
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iii. If remainingElementsCount.[[value]] is 0, then
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1. Let valuesArray be CreateArrayFromList(values).
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2. Perform ? Call(resultCapability.[[Resolve]], undefined, « valuesArray »).
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...
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Promise.allSettled Resolve Element Functions
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2. Let alreadyCalled be F.[[AlreadyCalled]].
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3. If alreadyCalled.[[Value]] is true, return undefined.
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4. Set alreadyCalled.[[Value]] to true.
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...
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includes: [promiseHelper.js]
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features: [Promise.allSettled]
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---*/
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var callCount = 0;
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function Constructor(executor) {
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function resolve(values) {
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callCount += 1;
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checkSettledPromises(values, [
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{
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status: 'fulfilled',
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value: 'p1-fulfill'
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},
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{
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status: 'fulfilled',
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value: 'p2-fulfill'
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},
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{
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status: 'fulfilled',
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value: 'p3-fulfill'
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}
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], 'values');
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}
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executor(resolve, $ERROR);
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}
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Constructor.resolve = function(v) {
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return v;
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};
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var p1OnFulfilled, p2OnFulfilled, p3OnFulfilled;
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var p1 = {
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then(onFulfilled, onRejected) {
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p1OnFulfilled = onFulfilled;
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}
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};
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var p2 = {
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then(onFulfilled, onRejected) {
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p2OnFulfilled = onFulfilled;
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}
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};
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var p3 = {
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then(onFulfilled, onRejected) {
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p3OnFulfilled = onFulfilled;
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}
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};
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assert.sameValue(callCount, 0, 'callCount before call to all()');
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Promise.allSettled.call(Constructor, [p1, p2, p3]);
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assert.sameValue(callCount, 0, 'callCount after call to all()');
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p1OnFulfilled('p1-fulfill');
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p1OnFulfilled('p1-fulfill-unexpected-1');
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p1OnFulfilled('p1-fulfill-unexpected-2');
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assert.sameValue(callCount, 0, 'callCount after resolving p1');
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p2OnFulfilled('p2-fulfill');
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p3OnFulfilled('p3-fulfill');
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assert.sameValue(callCount, 1, 'callCount after resolving all elements');
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