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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 = [];
+ const promise = Array.fromAsync(items);
+ // By the time we get here, the first next() call has already happened, and returned
+ // { done: true }. We then return from the loop in Array.fromAsync 3.j.ii. with the empty array,
+ // and the following line no longer affects that.
+ items.push(7);
+ const result = await promise;
+ assert.compareArray(result, []);
+});