tor-browser

The Tor Browser
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iter-next-val-err-reject.js (1398B)

      1 // |reftest| async
      2 // Copyright (C) 2015 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 accessing an iterator result's `value` property (rejecting
      8  promise)
      9 esid: sec-promise.race
     10 info: |
     11    11. Let result be PerformPromiseRace(iteratorRecord, C, promiseCapability).
     12    12. If result is an abrupt completion,
     13        a. If iteratorRecord.[[done]] is false, let result be
     14           IteratorClose(iterator, result).
     15        b. IfAbruptRejectPromise(result, promiseCapability).
     16 
     17    [...]
     18 
     19    25.4.4.3.1 Runtime Semantics: PerformPromiseRace
     20 
     21    1. Repeat
     22        [...]
     23        e. Let nextValue be IteratorValue(next).
     24        f. If nextValue is an abrupt completion, set iteratorRecord.[[done]] to
     25           true.
     26        g. ReturnIfAbrupt(nextValue).
     27 features: [Symbol.iterator]
     28 flags: [async]
     29 ---*/
     30 
     31 var iterNextValThrows = {};
     32 var poisonedVal = {
     33  done: false
     34 };
     35 var error = new Test262Error();
     36 Object.defineProperty(poisonedVal, 'value', {
     37  get: function() {
     38    throw error;
     39  }
     40 });
     41 iterNextValThrows[Symbol.iterator] = function() {
     42  return {
     43    next: function() {
     44      return poisonedVal;
     45    }
     46  };
     47 };
     48 
     49 Promise.race(iterNextValThrows).then(function() {
     50  $DONE('The promise should be rejected.');
     51 }, function(reason) {
     52  assert.sameValue(reason, error);
     53 }).then($DONE, $DONE);