focusing-disconnected-noop.html

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This WPT test may be referenced by the following Test IDs:
- /html/editing/focus/focus-management/focusing-disconnected-noop.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>Focusing a disconnected node is a no-op</title>

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

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

<script>

"use strict";

test(() => {

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

  let handleFocusCallCount = 0;

  button.addEventListener("focus", () => {

    handleFocusCallCount += 1;

});

  button.focus();

  assert_equals(handleFocusCallCount, 0);

  assert_equals(document.activeElement, document.body);

}, "focusing a focused element must not dispatch focus events or change activeElement");

</script>