mirror of https://github.com/tc39/test262.git
43 lines
1002 B
JavaScript
43 lines
1002 B
JavaScript
// Copyright 2018 the V8 project authors. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
|
|
/*---
|
|
author: Maya Lekova <mslekova@chromium.org>
|
|
esid: await
|
|
description: >
|
|
Await on async generator functions and builtin Promises are properly
|
|
interleaved, meaning await takes only 1 tick on the microtask queue.
|
|
flags: [async]
|
|
features: [async-functions, async-iteration]
|
|
includes: [compareArray.js]
|
|
---*/
|
|
|
|
const actual = [];
|
|
const expected = [ 'await', 1, 'await', 2 ];
|
|
const iterations = 2;
|
|
|
|
async function pushAwait() {
|
|
actual.push('await');
|
|
}
|
|
|
|
async function* callAsync() {
|
|
for (let i = 0; i < iterations; i++) {
|
|
await pushAwait();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
function checkAssertions() {
|
|
assert.compareArray(actual, expected,
|
|
'Async/await and promises should be interleaved');
|
|
}
|
|
|
|
callAsync().next();
|
|
|
|
new Promise(function (resolve) {
|
|
actual.push(1);
|
|
resolve();
|
|
}).then(function () {
|
|
actual.push(2);
|
|
}).then(checkAssertions).then($DONE, $DONE);
|