// 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); reportCompare(0, 0);