Commit 52f868d8 authored by Sean Feng's avatar Sean Feng
Browse files

Bug 1413836 - Add a test to ensure :focus is applied to host when the focus is... 

Bug 1413836 - Add a test to ensure :focus is applied to host when the focus is moved by <tab> r=smaug

Depends on D123863

Differential Revision: https://phabricator.services.mozilla.com/D124067
parent a51a1d12

testing/web-platform/tests/shadow-dom/focus/focus-tab-on-shadow-host.html

0 → 100644
+29 −0
Original line number Diff line number Diff line 
<!DOCTYPE html>

<meta charset="utf-8">

<title>HTML Test: Use tab to navigate the focus to an element inside shadow host with delegatesFocus</title>

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

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

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

<script src="/resources/testdriver-vendor.js"></script>

<script src="resources/shadow-utils.js"></script>



<body>

  <div id="host"></div>

</body>



<script>

const host = document.getElementById("host");



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

const input = document.createElement("input");

shadowRoot.appendChild(input);



promise_test(async function() {

  assert_equals(document.activeElement, document.body);

  // Press <tab>

  await navigateFocusForward();

  assert_equals(document.activeElement, host);

  assert_equals(shadowRoot.activeElement, input);

  assert_true(host.matches(':focus'));

}, ":focus should be applied to the host when the focus is moved by <tab>");

</script>