tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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this-constructor-with-unsettable-element.js (896B)

      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  Rejects the promise if setting an element fails on an instance of a custom
      9  this-value
     10 info: |
     11  3.j.ii.8. Let _defineStatus_ be CreateDataPropertyOrThrow(_A_, _Pk_, _mappedValue_).
     12  9. If _defineStatus_ is an abrupt completion, return ? AsyncIteratorClose(_iteratorRecord_, _defineStatus_).
     13 includes: [asyncHelpers.js]
     14 flags: [async]
     15 features: [Array.fromAsync]
     16 ---*/
     17 
     18 asyncTest(async function () {
     19  function MyArray() {
     20    Object.defineProperty(this, 0, {
     21      enumerable: true,
     22      writable: true,
     23      configurable: false,
     24      value: 0
     25    });
     26  }
     27 
     28  await assert.throwsAsync(TypeError, () => Array.fromAsync.call(MyArray, [0, 1, 2]), "Promise rejected if defining element fails");
     29 });