history-back-and-forward-should-not-work-in-fenced-tree.https.html

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This WPT test may be referenced by the following Test IDs:
- /fenced-frame/history-back-and-forward-should-not-work-in-fenced-tree.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

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

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

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

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

<title>history-back-and-forward-should-not-work-in-fenced-tree</title>

<body>

  <script>

    // TODO(crbug.com/1262022): Remove references to ShadowDOM now that the

    // implementation is obsolete.

    const test_desc = "history.back() and history.forward() should be " +

                      "restricted within a fenced tree in shadowDOM thus have" +

                      " no effect when called within a fenced tree scope.";

    const history_navigation_performed_key = token();

    const outer_page_ready_key = token();

    // attach a fenced frame to exeute a series of back and forward history

    // navigations.

    attachFencedFrame(

        generateURL(

            "resources/history-back-and-forward-should-not-work-in-" +

            "fenced-tree-inner.html",

            [history_navigation_performed_key, outer_page_ready_key]));

    promise_test(async function () {

      await nextValueFromServer(history_navigation_performed_key);

      // Perform a series of history.pushState() to help observe any popstate due

      // to back and forward history navigations.

      window.history.pushState(1, document.title, '#tag1');

      window.history.pushState(2, document.title, '#tag2');

      window.history.pushState(3, document.title, '#tag3');

      writeValueToServer(outer_page_ready_key, "yes");

      // Assert restricted history.back() within fenced frame.

      await nextValueFromServer(history_navigation_performed_key);

      assert_equals(window.history.state, 3, "history.back() should be " +

        "restricted and will not work when called from a fenced frame.");

      writeValueToServer(outer_page_ready_key, "yes");

      // Assert restricted history.forward() within fenced frame.

      await nextValueFromServer(history_navigation_performed_key);

      assert_equals(window.history.state, 3, "history.forward() should be " +

        "restricted and will not work when called from a fenced frame.");

      writeValueToServer(outer_page_ready_key, "yes");

      // Assert restricted history.back() within iframe in fenced frame.

      await nextValueFromServer(history_navigation_performed_key);

      assert_equals(window.history.state, 3, "history.back() should be " +

        "restricted and will not work within an iframe embeeded in a fenced " +

        "frame.");

      writeValueToServer(outer_page_ready_key, "yes");

      // Assert restricted history.forward() within iframe in fenced frame.

      await nextValueFromServer(history_navigation_performed_key);

      assert_equals(window.history.state, 3, "history.forward() should be " +

        "restricted and will not work within an iframe embeeded in a fenced " +

        "frame.");

    }, test_desc);

  </script>

</body>

</html>