focused-area-removal.html

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This WPT test may be referenced by the following Test IDs:
- /html/editing/focus/focus-management/focused-area-removal.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>Focused area removal</title>

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

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

<body>

<script>

"use strict";

promise_test(async t => {

  // Wait for the test window to gain focus before testing synchronous focus changes.

  const sentinel = document.createElement("button");

  document.body.append(sentinel);

  t.add_cleanup(() => sentinel.remove());

  await new Promise(resolve => {

    sentinel.addEventListener("focus", resolve, { once: true });

    sentinel.focus();

});

  sentinel.blur();

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

  document.body.appendChild(button);

  t.add_cleanup(() => button.remove());

  button.focus();

  assert_equals(document.activeElement, button);

  assert_equals(document.hasFocus(), true);

  button.remove();

  assert_equals(document.activeElement, document.body);

  assert_equals(document.hasFocus(), true);

}, "removing the activeElement keeps focus on its document");

</script>