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// |reftest| async
// Copyright (C) 2020 Rick Waldron. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-promise.race
description: Resolution ticks are set in a predictable sequence
info: |
PerformPromiseRace
Repeat,
Let next be IteratorStep(iteratorRecord).
If next is an abrupt completion, set iteratorRecord.[[Done]] to true.
ReturnIfAbrupt(next).
If next is false, then
Set iteratorRecord.[[Done]] to true.
Return resultCapability.[[Promise]].
Let nextValue be IteratorValue(next).
If nextValue is an abrupt completion, set iteratorRecord.[[Done]] to true.
ReturnIfAbrupt(nextValue).
Let nextPromise be ? Call(promiseResolve, constructor, « nextValue »).
Perform ? Invoke(nextPromise, "then", « resultCapability.[[Resolve]], resultCapability.[[Reject]] »).
flags: [async]
includes: [compareArray.js,promiseHelper.js]
---*/
let a = new Promise((_, reject) => reject('a'));
let b = new Promise((_, reject) => reject('b'));
let sequence = [1];
Promise.all([
a.catch(() => {
sequence.push(3);
assert.sameValue(sequence.length, 3);
return checkSequence(sequence, 'Expected to be called first.');
}),
Promise.race([a, b]).catch(() => {
sequence.push(5);
assert.sameValue(sequence.length, 5);
return checkSequence(sequence, 'Expected to be called third.');
}),
b.catch(() => {
sequence.push(4);
assert.sameValue(sequence.length, 4);
return checkSequence(sequence, 'Expected to be called second.');
})
]).then(result => {
assert.compareArray(result, [true, true, true]);
assert.sameValue(sequence.length, 5);
checkSequence(sequence);
}).then($DONE, $DONE);
sequence.push(2);
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