Document-cloneNode-about-base-url.window.js

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /dom/nodes/Document-cloneNode-about-base-url.window.html - WPT Dashboard Interop Dashboard

// An about:blank document inherits its initiator's base URL. Cloning copies the

// computed base URL, so the clone reports the same value.

// See https://github.com/whatwg/dom/issues/454

const BASE_HREF = "http://example.com/foo/bar";

function aboutBlankDocument(t) {

  return new Promise(resolve => {

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

    iframe.src = "about:blank";

    iframe.onload = () => resolve(iframe);

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

    document.body.appendChild(iframe);

});

promise_test(async t => {

  const doc = (await aboutBlankDocument(t)).contentDocument;

  assert_equals(doc.URL, "about:blank", "URL");

  assert_equals(doc.baseURI, document.baseURI, "inherited base URL");

}, "An about:blank document inherits the initiator base URL");

promise_test(async t => {

  const doc = (await aboutBlankDocument(t)).contentDocument;

  const expected = doc.baseURI;

  const deep = doc.cloneNode(true);

  assert_equals(deep.URL, "about:blank", "URL");

  assert_equals(deep.baseURI, expected, "baseURI");

}, "Deep clone of an about:blank document");

promise_test(async t => {

  const doc = (await aboutBlankDocument(t)).contentDocument;

  const expected = doc.baseURI;

  const shallow = doc.cloneNode(false);

  assert_equals(shallow.URL, "about:blank", "URL");

  assert_equals(shallow.baseURI, expected, "baseURI");

}, "Shallow clone of an about:blank document");

// The inherited base URL is a snapshot, not a live lookup: the clone keeps it

// after the source iframe is detached.

promise_test(async t => {

  const iframe = await aboutBlankDocument(t);

  const doc = iframe.contentDocument;

  const expected = doc.baseURI;

  const shallow = doc.cloneNode(false);

  const deep = doc.cloneNode(true);

  iframe.remove();

  assert_equals(shallow.baseURI, expected, "shallow");

  assert_equals(deep.baseURI, expected, "deep");

}, "Clone of an about:blank document after detaching the source");

promise_test(async t => {

  const doc = (await aboutBlankDocument(t)).contentDocument;

  const base = doc.createElement("base");

  base.setAttribute("href", BASE_HREF);

  doc.head.appendChild(base);

  assert_equals(doc.baseURI, BASE_HREF, "source");

  assert_equals(doc.cloneNode(true).baseURI, BASE_HREF, "deep");

  assert_equals(doc.cloneNode(false).baseURI, BASE_HREF, "shallow");

}, "Clone of an about:blank document with a <base>");