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// Copyright (C) 2020 Rick Waldron. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-promise.any
description: >
Cannot tamper remainingElementsCount when Promise.all resolve element function is called twice in a row.
info: |
Let result be PerformPromiseAny(iteratorRecord, C, promiseCapability).
Runtime Semantics: PerformPromiseAny
...
Let remainingElementsCount be a new Record { [[value]]: 1 }.
...
8.d ...
ii. Set remainingElementsCount.[[value]] to remainingElementsCount.[[value]] − 1.
iii. If remainingElementsCount.[[value]] is 0,
1. Let error be a newly created AggregateError object.
2. Perform ! DefinePropertyOrThrow(error, "errors", Property Descriptor { [[Configurable]]: true, [[Enumerable]]: false, [[Writable]]: true, [[Value]]: errors }).
3. Return ThrowCompletion(error).
...
Promise.any Reject Element Functions
...
Let alreadyCalled be the value of F's [[AlreadyCalled]] internal slot.
If alreadyCalled.[[value]] is true, return undefined.
Set alreadyCalled.[[value]] to true.
...
features: [Promise.any, arrow-function]
---*/
let callCount = 0;
let errorArray;
function Constructor(executor) {
function reject(error) {
callCount += 1;
errorArray = error.errors;
assert(Array.isArray(error.errors), "error is array");
assert.sameValue(error.errors.length, 3, "error.length");
assert.sameValue(error.errors[0], "p1-rejection", "error.errors[0] === 'p1-rejection'");
assert.sameValue(error.errors[1], "p2-rejection", "error.errors[1] === 'p2-rejection'");
assert.sameValue(error.errors[2], "p3-rejection", "error.errors[2] === 'p3-rejection'");
assert(error instanceof AggregateError, "error instanceof AggregateError");
}
executor(Test262Error.thrower, reject);
}
Constructor.resolve = function(v) {
return v;
};
let p1OnRejected;
let p1 = {
then(onResolved, onRejected) {
p1OnRejected = onRejected;
}
};
let p2 = {
then(onResolved, onRejected) {
onRejected("p2-rejection");
onRejected("unexpectedonRejectedValue");
}
};
let p3 = {
then(onResolved, onRejected) {
onRejected("p3-rejection");
}
};
assert.sameValue(callCount, 0, "callCount before call to any()");
Promise.any.call(Constructor, [p1, p2, p3]);
assert.sameValue(callCount, 0, "callCount after call to any()");
p1OnRejected("p1-rejection");
assert.sameValue(callCount, 1, "callCount after call to p1OnRejected()");
assert.sameValue(
errorArray[0],
"p1-rejection",
"errorArray[0] === 'p1-rejection', after call to p1OnRejected(...)"
);
assert.sameValue(
errorArray[1],
"p2-rejection",
"errorArray[1] === 'p2-rejection', after call to p1OnRejected(...)"
);
assert.sameValue(
errorArray[2],
"p3-rejection",
"errorArray[2] === 'p3-rejection', after call to p1OnRejected(...)"
);
reportCompare(0, 0);
|
