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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-performpromiseallsettled
description: >
Cannot tamper remainingElementsCount when Promise.allSettled resolve element function is called twice in a row.
info: |
Runtime Semantics: PerformPromiseAllSettled ( iteratorRecord, constructor, resultCapability )
4. Let remainingElementsCount be a new Record { [[Value]]: 1 }.
...
6.d ...
ii. Set remainingElementsCount.[[value]] to remainingElementsCount.[[value]] − 1.
iii. If remainingElementsCount.[[value]] is 0, then
1. Let valuesArray be CreateArrayFromList(values).
2. Perform ? Call(resultCapability.[[Resolve]], undefined, « valuesArray »).
...
Promise.allSettled Resolve Element Functions
2. Let alreadyCalled be F.[[AlreadyCalled]].
3. If alreadyCalled.[[Value]] is true, return undefined.
4. Set alreadyCalled.[[Value]] to true.
...
includes: [promiseHelper.js]
features: [Promise.allSettled]
---*/
var callCount = 0;
function Constructor(executor) {
function resolve(values) {
callCount += 1;
checkSettledPromises(values, [
{
status: 'fulfilled',
value: 'p1-fulfill'
},
{
status: 'fulfilled',
value: 'p2-fulfill'
},
{
status: 'fulfilled',
value: 'p3-fulfill'
}
], 'values');
}
executor(resolve, Test262Error.thrower);
}
Constructor.resolve = function(v) {
return v;
};
var p1OnFulfilled;
var p1 = {
then(onFulfilled, onRejected) {
p1OnFulfilled = onFulfilled;
}
};
var p2 = {
then(onFulfilled, onRejected) {
onFulfilled('p2-fulfill');
onFulfilled('p2-fulfill-unexpected');
}
};
var p3 = {
then(onFulfilled, onRejected) {
onFulfilled('p3-fulfill');
}
};
assert.sameValue(callCount, 0, 'callCount before call to all()');
Promise.allSettled.call(Constructor, [p1, p2, p3]);
assert.sameValue(callCount, 0, 'callCount after call to all()');
p1OnFulfilled('p1-fulfill');
assert.sameValue(callCount, 1, 'callCount after resolving p1');
reportCompare(0, 0);
|
