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// |reftest| async
// Copyright (C) 2022 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-array.fromasync
description: >
Array.fromAsync respects array mutation
info: |
Array.fromAsync
3.j.ii.3. Let next be ? Await(IteratorStep(iteratorRecord)).
IteratorStep
1. Let result be ? IteratorNext(iteratorRecord).
IteratorNext
1.a. Let result be ? Call(iteratorRecord.[[NextMethod]], iteratorRecord.[[Iterator]]).
%AsyncFromSyncIteratorPrototype%.next
6.a. Let result be Completion(IteratorNext(syncIteratorRecord)).
IteratorNext
1.a. Let result be ? Call(iteratorRecord.[[NextMethod]], iteratorRecord.[[Iterator]]).
Array.prototype [ @@iterator ] ( )
Array.prototype.values ( )
2. Return CreateArrayIterator(O, value).
CreateArrayIterator
1.b.iii. If index ≥ len, return NormalCompletion(undefined).
includes: [asyncHelpers.js, compareArray.js]
flags: [async]
features: [Array.fromAsync]
---*/
asyncTest(async function () {
const items = [1, 2, 3];
const promise = Array.fromAsync(items);
// At this point, the first element of `items` has been read, but the iterator will take other
// changes into account.
items.push(4);
const result = await promise;
assert.compareArray(result, [1, 2, 3, 4]);
});