// 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);