history-length-fenced-navigations-replace-do-not-contribute-to-joint.https.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /fenced-frame/history-length-fenced-navigations-replace-do-not-contribute-to-joint.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Test history.length in outermost document</title>

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

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

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

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

<body>

<script>

promise_test(async () => {

  const kInnerAssertion = "Navigations inside of a fenced frame are always " +

                          "replacement navigations and never increase " +

                          "`history.length` inside the fence: ";

  const kOuterAssertion = "Navigations inside of a fenced frame never " +

                          "contribute to joint session history, or increase " +

                          "`history.length` outside the fence: ";

  // This is used by

  // `resources/history-length-fenced-navigations-replace-do-not-contribute-to-joint-inner.html`

  // to let us know once a navigation is complete inside the fence. The inner

  // page will test its `history.length` and report to us "PASS <frame type>" or

  // "FAIL <frame type>" (the history length should be unaffected by the

  // navigation). If the inner test passes, then we will check our

  // `history.length` and ensure that the inner fenced navigation did not

  // contribute to the joint session history.

  const fenced_navigation_complete_key = token();

  // This is sent by us to the inner page to let it know that we're finished

  // observing the effects of the last navigation, and that it should perform

  // the next one for us to observe.

  const outer_page_ready_for_next_fenced_navigation_key = token();

  const level = "top-level-fenced-frame";

  attachFencedFrame(generateURL(

      "resources/history-length-fenced-navigations-replace-do-" +

      "not-contribute-to-joint-inner.html",

      [fenced_navigation_complete_key,

       outer_page_ready_for_next_fenced_navigation_key,

       level]));

  const tests = ["top-level-fenced-frame", "nested-fenced-frame", "nested-iframe"];

  for (test_type of tests) {

    // Wait for the fenced navigations to complete, and then see if they

    // observable via the outermost `history.length`.

    let result = await nextValueFromServer(fenced_navigation_complete_key);

    assert_equals(result, "PASS > " + test_type, kInnerAssertion + test_type);

    assert_equals(history.length, 1, kOuterAssertion + test_type);

    // Acknowledge the results, and let the fenced frame know that we're ready

    // to observe more fenced navigations.

    writeValueToServer(outer_page_ready_for_next_fenced_navigation_key, "READY");

}, "All fenced navigations should be replace-only and not contribute to joint " +

   "session history");

</script>

</body>