frameset-element-synthetic-errorevent.html

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This WPT test may be referenced by the following Test IDs:
- /html/webappapis/scripting/events/event-handler-processing-algorithm-error/frameset-element-synthetic-errorevent.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>Event handlers processing algorithm: error events</title>

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

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

<link rel="help" href="https://html.spec.whatwg.org/multipage/#the-event-handler-processing-algorithm">

<iframe name="framesetWindow" src="resources/frameset-frame.html"></iframe>

<div id="log"></div>

<script>

"use strict";

setup({ allow_uncaught_exception: true });

window.onload = () => {

const frameset = framesetWindow.document.querySelector("frameset");

promise_test(t => {

  frameset.onerror = t.step_func((...args) => {

    assert_greater_than(args.length, 1);

    return true;

});

  const eventWatcher = new EventWatcher(t, framesetWindow, "error");

  const promise = eventWatcher.wait_for("error").then(e => {

    assert_equals(e.defaultPrevented, true);

});

  frameset.dispatchEvent(new ErrorEvent("error", { bubbles: true, cancelable: true }));

  return promise;

}, "error event is weird (return true cancels; many args) on Window, with a synthetic ErrorEvent");

promise_test(t => {

  const theError = { the: "error object" };

  frameset.onerror = t.step_func(function (message, filename, lineno, colno, error) {

    assert_equals(arguments.length, 5, "There must be exactly 5 arguments");

    assert_equals(message, "message");

    assert_equals(filename, "filename");

    assert_equals(lineno, 1);

    assert_equals(colno, 2);

    assert_equals(error, theError);

    return true;

});

  const eventWatcher = new EventWatcher(t, framesetWindow, "error");

  const promise = eventWatcher.wait_for("error");

  frameset.dispatchEvent(new ErrorEvent("error", {

    bubbles: true,

    message: "message",

    filename: "filename",

    lineno: 1,

    colno: 2,

    error: theError

  }));

  return promise;

}, "error event has the right 5 args on Window, with a synthetic ErrorEvent");

};

</script>