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Diffstat (limited to 'js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-array-remove.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-array-remove.js | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-array-remove.js b/js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-array-remove.js new file mode 100644 index 0000000000..6733b42260 --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-array-remove.js @@ -0,0 +1,44 @@ +// |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.pop(); + const result = await promise; + assert.compareArray(result, [1, 2]); +}); |