mirror of
https://github.com/tc39/test262.git
synced 2025-10-31 19:53:50 +01:00
42 lines
1.2 KiB
JavaScript
42 lines
1.2 KiB
JavaScript
// Copyright (C) 2019 Sergey Rubanov. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
|
|
/*---
|
|
description: >
|
|
Invocation of the instance's `then` method
|
|
esid: sec-promise.any
|
|
info: |
|
|
5. Let result be PerformPromiseAny(iteratorRecord, C, promiseCapability).
|
|
6. If result is an abrupt completion, then
|
|
a. If iteratorRecord.[[Done]] is false, set result to IteratorClose(iteratorRecord, result).
|
|
b. IfAbruptRejectPromise(result, promiseCapability).
|
|
|
|
Runtime Semantics: PerformPromiseAny
|
|
|
|
r. Perform ? Invoke(nextPromise, "then", « resultCapability.[[Resolve]], rejectElement »).
|
|
|
|
flags: [async]
|
|
features: [Promise.any, arrow-function]
|
|
---*/
|
|
|
|
let promises = [
|
|
Promise.resolve(),
|
|
Promise.resolve(),
|
|
Promise.resolve(),
|
|
];
|
|
let callCount = 0;
|
|
|
|
promises.forEach(promise => {
|
|
let boundThen = promise.then.bind(promise);
|
|
promise.then = function(...args) {
|
|
assert.sameValue(this, promises[callCount]);
|
|
callCount += 1;
|
|
return boundThen(...args);
|
|
};
|
|
});
|
|
|
|
Promise.any(promises)
|
|
.then(() => {
|
|
assert.sameValue(callCount, 3, '`then` invoked once for every iterated value');
|
|
}).then($DONE, $DONE);
|