live-collection.html

Enable keyboard shortcuts

This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/browsers/the-window-object/named-access-on-the-window-object/live-collection.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset="utf-8">

<title>Named access collections remain live</title>

<link rel="help" href="https://html.spec.whatwg.org/multipage/nav-history-apis.html#named-access-on-the-window-object">

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

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

<body>

<script>

"use strict";

test(() => {

  const first = document.createElement("div");

  const second = document.createElement("span");

  first.id = "liveNamedAccess";

  second.id = "liveNamedAccess";

  document.body.append(first, second);

  const collection = window.liveNamedAccess;

  assert_true(collection instanceof HTMLCollection);

  assert_array_equals([...collection], [first, second], "initial contents");

  first.remove();

  assert_array_equals([...collection], [second], "after removing one match");

  second.remove();

  assert_array_equals([...collection], [], "after removing all matches");

  const third = document.createElement("p");

  third.id = "liveNamedAccess";

  document.body.append(third);

  assert_array_equals([...collection], [third], "after adding a new match");

  third.remove();

}, "A retained named-access collection becomes empty when all matches are removed");

test(t => {

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

  document.body.append(iframe);

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

  const { contentDocument, contentWindow } = iframe;

  const first = contentDocument.createElement("div");

  const second = contentDocument.createElement("span");

  first.id = "removedDocumentElement";

  second.id = "removedDocumentElement";

  contentDocument.body.append(first, second);

  const collection = contentWindow.removedDocumentElement;

  assert_true(collection instanceof contentWindow.HTMLCollection);

  assert_array_equals([...collection], [first, second], "initial contents");

  contentDocument.documentElement.remove();

  assert_array_equals([...collection], [], "after removing the document element");

  const replacementDocumentElement = contentDocument.createElement("html");

  const replacementBody = contentDocument.createElement("body");

  const replacementMatch = contentDocument.createElement("p");

  replacementMatch.id = "removedDocumentElement";

  replacementBody.append(replacementMatch);

  replacementDocumentElement.append(replacementBody);

  contentDocument.append(replacementDocumentElement);

  assert_array_equals([...collection], [replacementMatch], "after adding a replacement document element");

}, "A retained named-access collection follows removal of the document element");

</script>