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reject-pending-fulfilled.js
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reject-pending-fulfilled.js
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// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: Rejecting from a pending promise that is later fulfilled
es6id: 25.4.5.3
info: |
[...]
7. Return PerformPromiseThen(promise, onFulfilled, onRejected,
resultCapability).
25.4.5.3.1 PerformPromiseThen
[...]
7. If the value of promise's [[PromiseState]] internal slot is "pending",
a. Append fulfillReaction as the last element of the List that is the
value of promise's [[PromiseFulfillReactions]] internal slot.
[...]
25.4.1.3.1 Promise Reject Functions
[...]
6. Return RejectPromise(promise, reason).
flags: [async]
---*/
var resolve;
var thenable = new Promise(function(_resolve) {
resolve = _resolve;
});
var p1 = new Promise(function(resolve) {
resolve();
});
var p2;
p2 = p1.then(function() {
throw thenable;
});
p2.then(function() {
$DONE('The promise should not be fulfilled.');
}, function(x) {
if (x !== thenable) {
$DONE('The promise should be rejected with the resolution value of the provided promise.');
return;
}
$DONE();
});
resolve();