ladybird/Tests/LibWeb/Text/input/HTML/ShadowRealm-rejection.html

<script src="../include.js"></script>
<script>
    asyncTest(async done => {
        const shadowRealm = new ShadowRealm();

        try {
            const result = await new Promise(shadowRealm.evaluate(`
                (resolve, reject) => {
                    (async () => {
                        throw new Error('An error!');
                    })().then(resolve, (e) => reject(e.toString()));
                }
            `));
        } catch (e) {
            println(e);
        }

        done();
    });
</script>