delegatesFocus-tabindex-change.html

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /shadow-dom/focus/delegatesFocus-tabindex-change.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<link rel=author href="mailto:jarhar@chromium.org">

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

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

<body>

<script>

test(() => {

  const host = document.createElement('div');

  document.body.appendChild(host);

  const shadowRoot = host.attachShadow({mode: 'open', delegatesFocus: true});

  const shadowInput = document.createElement('input');

  shadowRoot.appendChild(shadowInput);

  host.focus();

  assert_equals(document.activeElement, host, 'The shadow host should be focused.');

  host.setAttribute('tabindex', '0');

  assert_equals(document.activeElement, host, 'The shadow host should remain focused after changing tabindex.');

}, 'Setting tabindex on the shadow host of a focused element with delegatesFocus should not change focus.');

</script>