EventListener-handleEvent-cross-realm.html

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This test has a WPT meta file that expects 5 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /dom/events/EventListener-handleEvent-cross-realm.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>Cross-realm EventListener throws TypeError of its associated Realm</title>

<link rel="help" href="https://webidl.spec.whatwg.org/#ref-for-prepare-to-run-script">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<iframe name="eventListenerGlobalObject" src="resources/empty-document.html"></iframe>

<script>

setup({ allow_uncaught_exception: true });

test_onload(() => {

    const eventTarget = new EventTarget;

    const eventListener = new eventListenerGlobalObject.Object;

    eventTarget.addEventListener("foo", eventListener);

    assert_reports_exception(eventListenerGlobalObject.TypeError, () => { eventTarget.dispatchEvent(new Event("foo")); });

}, "EventListener is cross-realm plain object without 'handleEvent' property");

test_onload(() => {

    const eventTarget = new EventTarget;

    const eventListener = new eventListenerGlobalObject.Object;

    eventListener.handleEvent = {};

    eventTarget.addEventListener("foo", eventListener);

    assert_reports_exception(eventListenerGlobalObject.TypeError, () => { eventTarget.dispatchEvent(new Event("foo")); });

}, "EventListener is cross-realm plain object with non-callable 'handleEvent' property");

test_onload(() => {

    const eventTarget = new EventTarget;

    const { proxy, revoke } = Proxy.revocable(() => {}, {});

    revoke();

    const eventListener = new eventListenerGlobalObject.Object;

    eventListener.handleEvent = proxy;

    eventTarget.addEventListener("foo", eventListener);

    assert_reports_exception(eventListenerGlobalObject.TypeError, () => { eventTarget.dispatchEvent(new Event("foo")); });

}, "EventListener is cross-realm plain object with revoked Proxy as 'handleEvent' property");

test_onload(() => {

    const eventTarget = new EventTarget;

    const { proxy, revoke } = eventListenerGlobalObject.Proxy.revocable({}, {});

    revoke();

    eventTarget.addEventListener("foo", proxy);

    assert_reports_exception(eventListenerGlobalObject.TypeError, () => { eventTarget.dispatchEvent(new Event("foo")); });

}, "EventListener is cross-realm non-callable revoked Proxy");

test_onload(() => {

    const eventTarget = new EventTarget;

    const { proxy, revoke } = eventListenerGlobalObject.Proxy.revocable(() => {}, {});

    revoke();

    eventTarget.addEventListener("foo", proxy);

    assert_reports_exception(eventListenerGlobalObject.TypeError, () => { eventTarget.dispatchEvent(new Event("foo")); });

}, "EventListener is cross-realm callable revoked Proxy");

function test_onload(fn, desc) {

    async_test(t => { window.addEventListener("load", t.step_func_done(fn)); }, desc);

function assert_reports_exception(expectedConstructor, fn) {

    let error;

    const onErrorHandler = event => { error = event.error; };

    eventListenerGlobalObject.addEventListener("error", onErrorHandler);

    fn();

    eventListenerGlobalObject.removeEventListener("error", onErrorHandler);

    assert_equals(typeof error, "object");

    assert_equals(error.constructor, expectedConstructor);

</script>