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78 lines
2.1 KiB
JavaScript
78 lines
2.1 KiB
JavaScript
// Copyright (C) 2016 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-promise.all
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description: >
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Iterator is not closed when the "resolve" capability returns an abrupt
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completion.
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info: |
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1. Let C be the this value.
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[...]
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3. Let promiseCapability be ? NewPromiseCapability(C).
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[...]
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7. Let result be PerformPromiseAll(iteratorRecord, C, promiseCapability).
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8. If result is an abrupt completion, then
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a. If iteratorRecord.[[Done]] is false, let result be
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IteratorClose(iterator, result).
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b. IfAbruptRejectPromise(result, promiseCapability).
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25.4.4.1.1 Runtime Semantics: PerformPromiseAll
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[...]
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6. Repeat
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[...]
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d. If next is false, then
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[...]
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iii. If remainingElementsCount.[[Value]] is 0, then
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1. Let valuesArray be CreateArrayFromList(values).
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2. Perform ? Call(resultCapability.[[Resolve]], undefined, «
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valuesArray »).
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25.4.1.1.1 IfAbruptRejectPromise
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IfAbruptRejectPromise is a short hand for a sequence of algorithm steps that
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use a PromiseCapability Record. An algorithm step of the form:
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1. IfAbruptRejectPromise(value, capability).
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means the same thing as:
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1. If value is an abrupt completion, then
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a. Perform ? Call(capability.[[Reject]], undefined, « value.[[Value]] »).
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b. Return capability.[[Promise]].
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2. Else if value is a Completion Record, let value be value.[[Value]].
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features: [Symbol.iterator]
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---*/
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var nextCount = 0;
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var returnCount = 0;
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var iter = {};
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iter[Symbol.iterator] = function() {
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return {
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next: function() {
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nextCount += 1;
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return {
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done: true
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};
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},
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return: function() {
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returnCount += 1;
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return {};
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}
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};
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};
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var P = function(executor) {
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return new Promise(function(_, reject) {
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executor(function() {
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throw new Test262Error();
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}, reject);
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});
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};
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P.resolve = Promise.resolve;
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Promise.all.call(P, iter);
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assert.sameValue(nextCount, 1);
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assert.sameValue(returnCount, 0);
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