v8/test/mjsunit/harmony/async-generators-yield.js
Camillo Bruni a345a442d3 [d8][mjsunit][tools] Improve d8 file API
- Add d8.file.read() and d8.file.execute() helpers
- Change tools and tests to use new d8.file helper
- Unify error throwing in v8::Shell::ReadFile

Change-Id: I5ef4cb27f217508a367106f01e872a4059d5e399
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2928505
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74883}
2021-06-01 13:37:57 +00:00

71 lines
1.7 KiB
JavaScript

// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax
d8.file.execute('test/mjsunit/test-async.js');
// Yield a thenable which is never settled
testAsync(test => {
test.plan(0);
let awaitedThenable = { then() { } };
async function* gen() {
yield awaitedThenable;
test.unreachable();
}
gen().next().then(
(iterResult) => test.unreachable(),
test.unexpectedRejection());
}, "yield-await-thenable-pending");
// Yield a thenable which is fulfilled later
testAsync(test => {
test.plan(1);
let resolve;
let awaitedThenable = { then(resolveFn) { resolve = resolveFn; } };
async function* gen() {
let input = yield awaitedThenable;
test.equals("resolvedPromise", input);
}
gen().next().then(
(iterResult) => {
test.equals({ value: "resolvedPromise", done: false }, iterResult);
},
test.unexpectedRejection());
test.drainMicrotasks();
resolve("resolvedPromise");
}, "yield-await-thenable-resolved");
// Yield a thenable which is rejected later
testAsync(test => {
test.plan(2);
let reject;
let awaitedThenable = { then(resolveFn, rejectFn) { reject = rejectFn; } };
async function* gen() {
try {
yield awaitedThenable;
} catch (e) {
test.equals("rejection", e);
return e;
}
}
gen().next().then(
(iterResult) => {
test.equals({ value: "rejection", done: true }, iterResult);
},
test.unexpectedRejection());
test.drainMicrotasks();
reject("rejection");
}, "yield-await-thenable-rejected");