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Diffstat (limited to 'js/src/tests/test262/built-ins/Array/fromAsync/mapfn-async-iterable-sync.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/fromAsync/mapfn-async-iterable-sync.js | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/fromAsync/mapfn-async-iterable-sync.js b/js/src/tests/test262/built-ins/Array/fromAsync/mapfn-async-iterable-sync.js new file mode 100644 index 0000000000..ded2dfd367 --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/fromAsync/mapfn-async-iterable-sync.js @@ -0,0 +1,36 @@ +// |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: > + An asynchronous mapping function is applied to each item yielded by a + synchronous iterable. +info: | + 3.j.ii.6. If _mapping_ is *true*, then + a. Let _mappedValue_ be Call(_mapfn_, _thisArg_, « _nextValue_, 𝔽(_k_) »). + ... + c. Set _mappedValue_ to Await(_mappedValue_). + ... + ... + 8. Let _defineStatus_ be CreateDataPropertyOrThrow(_A_, _Pk_, _mappedValue_). +flags: [async] +includes: [asyncHelpers.js, compareArray.js] +features: [Array.fromAsync] +---*/ + +function* syncGen() { + for (let i = 0; i < 4; i++) { + yield i * 2; + } +} + +async function asyncMap(val, ix) { + return Promise.resolve(val * ix); +} + +asyncTest(async () => { + const result = await Array.fromAsync({ [Symbol.iterator]: syncGen }, asyncMap); + assert.compareArray(result, [0, 2, 8, 18], "async mapfn should be applied to sync iterable"); +}); |