popstate-multiple-backs.tentative.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:
- /soft-navigation-heuristics/popstate-multiple-backs.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE HTML>

<html>

<head>

<meta charset="utf-8">

<title>Soft navigation with multiple popstate calls.</title>

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

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

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

<script src="/resources/testdriver-vendor.js"></script>

<script src="resources/soft-navigation-helper.js"></script>

</head>

<body>

  <main id=main>

    <div>

      <a id=link>Click me!</a>

    </div>

  </main>

  <script>

    // Push state 4 times, as history.back() calls will trigger popstate

   //  events.

    history.pushState({}, "", "foobar.html");

    history.pushState({}, "", "another_one.html");

    history.pushState({}, "", "and_another.html");

    history.pushState({}, "", "and_yet_another.html");

    // This function runs at the start of the popstate event.

    const eventPrepWork = t => {

      // If this is an event due to the first click, go back() twice more.

      if (!t.popped) {

        step_timeout(()=>history.back(), 0);

        step_timeout(()=>history.back(), 0);

        t.popped = 0;

      ++t.popped;

      // return true for the second time the event fires, which is the first

      // back() triggered by the popstate event. The means that the first one

      // of those back() navigations would trigger a soft navigation, but not

      // the last one.

      return t.popped == 2;

    const link = document.getElementById("link");

    link.addEventListener("click", () => {

      history.back();

      timestamps[counter]["eventEnd"] = performance.now();

});

    testSoftNavigation({

      addContent: () => {

        // Add the content to the main element

        const main = document.getElementById("main");

        main.removeChild(document.getElementsByTagName("div")[0]);

        const div = document.createElement("div");

        const text = document.createTextNode("Lorem ipsum");

        div.appendChild(text);

        div.style="font-size: 3em";

        main.appendChild(div);

},

      link: link,

      eventPrepWork: eventPrepWork,

      testName: "A soft navigation that started from a back() call inside a "

        + "popstate event is recognized by SoftNavigationHeuristics",

      eventType: "popstate"});

  </script>

</body>

</html>