diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-uses-intrinsic-iterator-symbols.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-uses-intrinsic-iterator-symbols.js | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-uses-intrinsic-iterator-symbols.js b/js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-uses-intrinsic-iterator-symbols.js new file mode 100644 index 0000000000..f0e76c4ae0 --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-uses-intrinsic-iterator-symbols.js @@ -0,0 +1,41 @@ +// |reftest| async +// Copyright (C) 2023 Igalia, S.L. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-array.fromasync +description: > + Use the intrinsic @@iterator and @@asyncIterator to check iterability +includes: [compareArray.js, asyncHelpers.js] +flags: [async] +features: [Array.fromAsync] +---*/ + +asyncTest(async function () { + // Replace the user-reachable Symbol.iterator and Symbol.asyncIterator with + // fake symbol keys + const originalSymbol = globalThis.Symbol; + const fakeIteratorSymbol = Symbol("iterator"); + const fakeAsyncIteratorSymbol = Symbol("asyncIterator"); + globalThis.Symbol = { + iterator: fakeIteratorSymbol, + asyncIterator: fakeAsyncIteratorSymbol, + }; + + const input = { + length: 3, + 0: 0, + 1: 1, + 2: 2, + [fakeIteratorSymbol]() { + throw new Test262Error("The fake Symbol.iterator method should not be called"); + }, + [fakeAsyncIteratorSymbol]() { + throw new Test262Error("The fake Symbol.asyncIterator method should not be called"); + } + }; + const output = await Array.fromAsync(input); + assert.compareArray(output, [0, 1, 2]); + + globalThis.Symbol = originalSymbol; +}); |