test262/test/built-ins/Promise/race/reject-ignored-immed.js

47 lines
1.2 KiB
JavaScript

// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Resolved promises ignore rejections through immediate invocation of the
provided resolving function
es6id: 25.4.4.3
info: >
[...]
6. Let promiseCapability be NewPromiseCapability(C).
[...]
11. Let result be PerformPromiseRace(iteratorRecord, promiseCapability, C).
[...]
25.4.4.3.1 Runtime Semantics: PerformPromiseRace
1. Repeat
[...]
j. Let result be Invoke(nextPromise, "then",
«promiseCapability.[[Resolve]], promiseCapability.[[Reject]]»).
25.4.1.3.1 Promise Reject Functions
[...]
2. Let promise be the value of F's [[Promise]] internal slot.
3. Let alreadyResolved be the value of F's [[AlreadyResolved]] internal
slot.
4. If alreadyResolved.[[value]] is true, return undefined.
flags: [async]
---*/
var fulfiller = {
then: function(resolve) {
resolve();
}
};
var rejector = {
then: function(_, reject) {
reject();
}
};
Promise.race([fulfiller, rejector])
.then(function() {
$DONE();
}, function() {
$DONE('The promise should not be rejected.');
});