window-reuse-in-nested-browsing-contexts.tentative.html

mozilla-central/testing/web-platform/tests/html/browsers/the-window-object/window-reuse-in-nested-browsing-contexts.tentative.html

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Test Info: Warnings

This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/browsers/the-window-object/window-reuse-in-nested-browsing-contexts.tentative.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title></title>

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

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

<div id=log></div>

<script>

const setupIframe = (t, attrs) => {

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

  for (const [key, value] of Object.entries(attrs))

    iframe[key] = value;

  const watcher = new EventWatcher(t, iframe, ['load']);

  document.body.appendChild(iframe);

  return {iframe, watcher};

};

promise_test(async t => {

  const {iframe, watcher} = setupIframe(t, {});

  // Per https://whatwg.org/c/iframe-embed-object.html#process-the-iframe-attributes,

  // the task to perform the "iframe load event steps" should still be queued.

  // If a browser already fired a load event, the test will fail here since

  // EventWatcher will have received an unexpected load event.

  iframe.contentWindow.persistedString = 'Hello world!';

  iframe.src = 'support/same-origin-iframe.html';

  await watcher.wait_for(['load']);

  assert_true(iframe.contentWindow.didLoadFrame);

  // The <iframe>'s session history has only one Document, and that Document is

  // the initial about:blank Document. The Window object should be reused per

  // https://whatwg.org/c/iframe-embed-object.html#process-the-iframe-attributes.

  assert_equals(iframe.contentWindow.persistedString, 'Hello world!');

}, 'synchronously navigate iframe with no initial src.');

promise_test(async t => {

  const {iframe, watcher} = setupIframe(t, {});

  // Per https://whatwg.org/c/iframe-embed-object.html#process-the-iframe-attributes,

  // the task to perform the "iframe load event steps" should still be queued.

  await watcher.wait_for(['load']);

  iframe.contentWindow.persistedString = 'Hello world!';

  iframe.src = 'support/same-origin-iframe.html';

  await watcher.wait_for(['load']);

  assert_true(iframe.contentWindow.didLoadFrame);

  // The <iframe>'s session history has only one Document, and that Document is

  // the initial about:blank Document. The Window object should be reused per

  // https://whatwg.org/c/iframe-embed-object.html#process-the-iframe-attributes.

  assert_equals(iframe.contentWindow.persistedString, 'Hello world!');

}, 'after the first iframe load event, navigate iframe with no initial src.');

// Per https://whatwg.org/c/iframe-embed-object.html#otherwise-steps-for-iframe-or-frame-elements,

// setting the <iframe> src to an empty string before inserting the <iframe>

// into the document should begin an attempt to navigate to a resource with

// url == "about:blank".

promise_test(async t => {

  const {iframe, watcher} = setupIframe(t, {src: ''});

  // Per https://whatwg.org/c/browsing-the-web.html#navigate, the "about:blank"

  // resource should be obtained "in parallel". If a browser performs this step

  // synchronously, the test will fail here since EventWatcher will have

  // received an unexpected load event.

  iframe.contentWindow.persistedString = 'Hello world!';

  // An attempt to navigate to "about:blank" already exists but should not have

  // matured yet since the resource should be obtained "in parallel". The new

  // navigation attempt will cancel the preexisting attempt.

  iframe.src = 'support/same-origin-iframe.html';

  await watcher.wait_for(['load']);

  assert_true(iframe.contentWindow.didLoadFrame);

  // The navigation attempt to "about:blank" was cancelled, so the <iframe>'s

  // session history has only one Document, and that Document is the

  // initial about:blank Document. The Window object should be reused per

  // https://whatwg.org/c/iframe-embed-object.html#process-the-iframe-attributes.

  assert_equals(iframe.contentWindow.persistedString, 'Hello world!');

}, 'synchronously navigate iframe with initial src == "".');

promise_test(async t => {

  const {iframe, watcher} = setupIframe(t, {src: ''});

  // Per https://whatwg.org/c/browsing-the-web.html#navigate, the "about:blank"

  // resource should be obtained "in parallel".

  await watcher.wait_for(['load']);

  iframe.contentWindow.persistedString = 'Hello world!';

  iframe.src = 'support/same-origin-iframe.html';

  await watcher.wait_for(['load']);

  assert_true(iframe.contentWindow.didLoadFrame);

  // A non-initial navigation to about:blank was committed, so the <iframe>

  // element is no longer displaying the initial about:blank Document. Per

  // https://whatwg.org/c/browsing-the-web.html#initialise-the-document-object,

  // the Window object must not be reused.

  assert_equals(iframe.contentWindow.persistedString, undefined);

}, 'after the first iframe load event, navigate iframe with initial src == "".');

promise_test(async t => {

  const {iframe, watcher} = setupIframe(t, {src: 'about:blank'});

  // Per https://whatwg.org/c/browsing-the-web.html#navigate, the "about:blank"

  // resource should be obtained "in parallel". If a browser performs this step

  // synchronously, the test will fail here since EventWatcher will have

  // received an unexpected load event.

  iframe.contentWindow.persistedString = 'Hello world!';

  // An attempt to navigate to "about:blank" already exists but should not have

  // matured yet since the resource should be obtained "in parallel". The new

  // navigation attempt will cancel the preexisting attempt.

  iframe.src = 'support/same-origin-iframe.html';

  await watcher.wait_for(['load']);

  assert_true(iframe.contentWindow.didLoadFrame);

  // The navigation attempt to "about:blank" was cancelled, so the <iframe>'s

  // session history has only one Document, and that Document is the

  // initial about:blank Document. The Window object should be reused per

  // https://whatwg.org/c/iframe-embed-object.html#process-the-iframe-attributes.

  assert_equals(iframe.contentWindow.persistedString, 'Hello world!');

}, 'synchronously navigate iframe with initial src == "about:blank".');

promise_test(async t => {

  const {iframe, watcher} = setupIframe(t, {src: 'about:blank'});

  // Per https://whatwg.org/c/browsing-the-web.html#navigate, the "about:blank"

  // resource should be obtained "in parallel".

  await watcher.wait_for(['load']);

  iframe.contentWindow.persistedString = 'Hello world!';

  iframe.src = 'support/same-origin-iframe.html';

  await watcher.wait_for(['load']);

  assert_true(iframe.contentWindow.didLoadFrame);

  // A non-initial navigation to about:blank was committed, so the <iframe>

  // element is no longer displaying the initial about:blank Document. Per

  // https://whatwg.org/c/browsing-the-web.html#initialise-the-document-object,

  // the Window object must not be reused.

  assert_equals(iframe.contentWindow.persistedString, undefined);

}, 'after the first iframe load event, navigate iframe with initial src == "about:blank".');

// Per https://whatwg.org/c/iframe-embed-object.html#otherwise-steps-for-iframe-or-frame-elements,

// setting <iframe> src before inserting the <iframe> into the document should

// begin an attempt to navigate to the value of the src attribute.

promise_test(async t => {

  const {iframe, watcher} = setupIframe(t, {src: 'support/same-origin-iframe.html'});

  iframe.contentWindow.persistedString = 'Hello world!';

  // Completion of the attempt to navigate happens "in parallel".

  await watcher.wait_for(['load']);

  assert_true(iframe.contentWindow.didLoadFrame);

  // The <iframe>'s session history has only one Document, and that Document is

  // the initial about:blank Document. The Window object should be reused per

  // https://whatwg.org/c/iframe-embed-object.html#process-the-iframe-attributes.

  assert_equals(iframe.contentWindow.persistedString, 'Hello world!');

}, 'iframe with initial src == same-origin resource.');

</script>