sandbox-iframe.html

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This WPT test may be referenced by the following Test IDs:
- /speculation-rules/prerender/sandbox-iframe.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<!--

Tests for cross-origin iframes due to sandbox flags is deferred properly.

This file cannot be upstreamed to WPT until:

* The specification describes the loading of cross-origin iframes. The test

  expects that they are not loaded during prerendering.

-->

<title>Load a prerendered iframe with sandbox attributes</title>

<meta name="timeout" content="long">

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

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

<script src="/common/get-host-info.sub.js"></script>

<script src="/common/utils.js"></script>

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

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

<body>

<script>

setup(() => assertSpeculationRulesIsSupported());

promise_test(async t => {

  const uid = token();

  const bc = new PrerenderChannel('test-channel', uid);

  const messageQueue = new BroadcastMessageQueue(bc);

  t.add_cleanup(_ => bc.close());

  const url = `resources/sandbox-iframe.html?uid=${uid}`;

  window.open(url, '_blank', 'noopener');

  const result = await messageQueue.nextMessage();

  const expected = [

      event: 'started waiting iframe loaded',

      prerendering: true

},

      event: 'prerendering change',

      prerendering: false

},

      event: 'finished waiting iframe loaded',

      prerendering: false

},

];

  assert_equals(result.length, expected.length);

  for (let i = 0; i < result.length; i++) {

    assert_equals(result[i].event, expected[i].event, `event[${i}]`);

    assert_equals(result[i].prerendering, expected[i].prerendering,

       `prerendering[${i}]`);

  // Send a close signal to PrerenderEventCollector on the prerendered page.

  new PrerenderChannel('close', uid).postMessage('');

}, `same-origin sandbox iframes should not load until activation`);

</script>