tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

resolve-poisoned-then.js (958B)

      1 // |reftest| async
      2 // Copyright (C) 2016 the V8 project authors. All rights reserved.
      3 // This code is governed by the BSD license found in the LICENSE file.
      4 /*---
      5 description: Resolving with an object with a "poisoned" then property
      6 es6id: 25.4.4.5
      7 info: |
      8    [...]
      9    6. Let resolveResult be Call(promiseCapability.[[Resolve]], undefined,
     10       «x»).
     11    [...]
     12 
     13    25.4.1.3.2 Promise Resolve Functions
     14    [...]
     15    8. Let then be Get(resolution, "then").
     16    9. If then is an abrupt completion, then
     17       a. Return RejectPromise(promise, then.[[value]]).
     18 flags: [async]
     19 ---*/
     20 
     21 var value = {};
     22 var resolve;
     23 var poisonedThen = Object.defineProperty({}, 'then', {
     24  get: function() {
     25    throw value;
     26  }
     27 });
     28 
     29 Promise.resolve(poisonedThen).then(function() {
     30  $DONE('The promise should not be fulfilled.');
     31 }, function(val) {
     32  if (val !== value) {
     33    $DONE('The promise should be rejected with the provided value.');
     34    return;
     35  }
     36 
     37  $DONE();
     38 });