state-and-event.html

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

<!DOCTYPE html>

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

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

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

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

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

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

<body>

<script>

setup(() => assertSpeculationRulesIsSupported());

promise_test(async t => {

  // The key used for storing a test result in the server.

  const key = token();

  // Open the test runner in a popup - it will prerender itself, record the

  // test results, and send them back to this harness.

  const url = `resources/prerender-state.html?key=${key}`;

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

  // Wait until the test sends us the results.

  let result = await nextValueFromServer(key);

  result = JSON.parse(result);

  assert_equals(result.prerenderingTypeOf, "boolean",

                "typeof(document.prerendering) is 'boolean'.");

  assert_equals(result.onprerenderingChangeTypeOf, "object",

                "typeof(document.onprerenderingchange) is 'object'.");

  assert_equals(

    result.onprerenderingchangeCalledBeforeActivate, false,

    "prerenderingchange event should not be called prior to activation.");

  assert_equals(

    result.prerenderingValueBeforeActivate, true,

    "document.prerendering should be true prior to activation.");

  assert_equals(result.onprerenderingchangeCalledAfterActivate, true,

                "prerenderingchange event should be called after activation.");

  assert_equals(result.prerenderingValueAfterActivate, false,

                "document.prerendering should be false after activation.");

  assert_equals(result.eventBubbles, false,

                "prerenderingchange event.bubbles should be false.");

  assert_equals(result.eventCancelable, false,

                "prerenderingchange event.cancelable should be false.");

}, 'Test document.prerendering and its change event.');

</script>