tor-browser

The Tor Browser
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mapfn-sync-throws.js (771B)


      1 // |reftest| async
      2 // Copyright (C) 2023 Igalia, S.L. All rights reserved.
      3 // This code is governed by the BSD license found in the LICENSE file.
      4 
      5 /*---
      6 esid: sec-array.fromasync
      7 description: >
      8  The output promise rejects if the synchronous mapping function throws.
      9 info: |
     10  3.j.ii.6. If _mapping_ is *true*, then
     11    a. Let _mappedValue_ be Call(_mapfn_, _thisArg_, « _nextValue_, 𝔽(_k_) »).
     12    b. IfAbruptCloseAsyncIterator(_mappedValue_, _iteratorRecord_).
     13    ...
     14 flags: [async]
     15 includes: [asyncHelpers.js]
     16 features: [Array.fromAsync]
     17 ---*/
     18 
     19 asyncTest(async () => {
     20  await assert.throwsAsync(Test262Error, () => Array.fromAsync([1, 2, 3], () => {
     21    throw new Test262Error("mapfn throws");
     22  }), "sync mapfn throwing should cause fromAsync to reject");
     23 });