tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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iter-step-err-reject.js (1491B)

      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 /*---
      6 description: >
      7  Error when advancing the provided iterable (rejecting promise)
      8 esid: sec-promise.race
      9 info: |
     10    [...]
     11    11. Let result be PerformPromiseRace(iteratorRecord, promiseCapability, C).
     12    12. If result is an abrupt completion, then
     13        a. If iteratorRecord.[[done]] is false, let result be
     14           IteratorClose(iterator,result).
     15        b. IfAbruptRejectPromise(result, promiseCapability).
     16 
     17    25.4.4.3.1 Runtime Semantics: PerformPromiseRace
     18    1. Repeat
     19       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
     20       b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
     21       c. ReturnIfAbrupt(next).
     22 features: [Symbol.iterator]
     23 flags: [async]
     24 ---*/
     25 
     26 var iterStepThrows = {};
     27 var poisonedDone = {};
     28 var error = new Test262Error();
     29 Object.defineProperty(poisonedDone, 'done', {
     30  get: function() {
     31    throw error;
     32  }
     33 });
     34 Object.defineProperty(poisonedDone, 'value', {
     35  get: function() {
     36    throw new Test262Error('The `value` property should not be accessed.');
     37  }
     38 });
     39 
     40 iterStepThrows[Symbol.iterator] = function() {
     41  return {
     42    next: function() {
     43      return poisonedDone;
     44    }
     45  };
     46 };
     47 
     48 Promise.race(iterStepThrows).then(function() {
     49  $DONE('The promise should be rejected.');
     50 }, function(reason) {
     51  assert.sameValue(reason, error);
     52 }).then($DONE, $DONE);