| // Copyright (C) 2016 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| description: > |
| Explicit iterator closing in response to error from `Promise.resolve` |
| esid: sec-promise.race |
| info: | |
| [...] |
| 11. Let result be PerformPromiseRace(iteratorRecord, promiseCapability, C). |
| 12. If result is an abrupt completion, then |
| a. If iteratorRecord.[[done]] is false, let result be |
| IteratorClose(iterator,result). |
| b. IfAbruptRejectPromise(result, promiseCapability). |
| |
| |
| 25.4.4.3.1 Runtime Semantics: PerformPromiseRace |
| |
| 1. Repeat |
| [...] |
| h. Let nextPromise be Invoke(C, "resolve", «nextValue»). |
| i. ReturnIfAbrupt(nextPromise). |
| features: [Symbol.iterator] |
| ---*/ |
| |
| var iterDoneSpy = {}; |
| var returnCount = 0; |
| iterDoneSpy[Symbol.iterator] = function() { |
| return { |
| next: function() { |
| return { |
| value: null, |
| done: false |
| }; |
| }, |
| return: function() { |
| returnCount += 1; |
| return {}; |
| } |
| }; |
| }; |
| |
| Promise.resolve = function() { |
| throw err; |
| }; |
| |
| Promise.race(iterDoneSpy); |
| |
| assert.sameValue(returnCount, 1); |