event-handler-attributes-no-bc.html

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This test has a WPT meta file that expects 3 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/webappapis/scripting/events/event-handler-attributes-no-bc.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>event handlers and no browsing context</title>

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

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

<body>

<script>

function run_checks(element) {

  assert_equals(element.onclick, null);

  let ran = false;

  // attribute change steps

  element.setAttribute('onclick', 'window.ran = true;');

  assert_equals(element.onclick, null);

  element.dispatchEvent(new Event('click'));

  assert_false(window.ran);

  // IDL attribute setter; determining the target of an event handler only

  // returns null for a body or frameset element, see

  // event-handler-attributes-windowless-body.html

  element.onclick = () => ran = true;

  assert_equals(typeof element.onclick, 'function');

  element.dispatchEvent(new Event('click'));

  assert_true(ran);

test(() => {

  const template = document.createElement('template');

  template.innerHTML = '<div onclick="assert_unreached();"></div>';

  run_checks(template.content.firstChild);

}, 'template contents');

test(() => {

  const doc = new Document();

  doc.appendChild(doc.createElementNS('http://www.w3.org/1999/xhtml', 'html'));

  const div = doc.documentElement.appendChild(doc.createElementNS('http://www.w3.org/1999/xhtml', 'div'));

  div.setAttribute('onclick', 'assert_unreached();');

  run_checks(div);

}, 'new Document()');

test(() => {

  const p = new DOMParser();

  const doc = p.parseFromString('<!doctype html><div onclick="assert_unreached();"></div>', 'text/html');

  run_checks(doc.body.firstChild);

}, 'DOMParser()');

</script>