test_session_history_on_redirect.html

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<html>

<head>

  <meta charset="utf-8">

  <title>Session history on redirect</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" href="/tests/SimpleTest/test.css"/>

  <script>

/*

     * The test opens a new window and loads a page there. Then another document

     * is loaded to the window. The initial load of that second page doesn't do

     * a redirect. Now another non-redirecting page is loaded. Then

     * history.go(-2) and history.forward() are called. The second time

     * the second page is loaded, it does a redirect. history.back() and

     * history.forward() are called again. The page which did the redirect

     * shouldn't be accessed, but the page which it redirected to.

     * Finally history.forward() is called again and the third page should be

     * loaded and history.length should have the same value as it had when the

     * third page was loaded the first time.

*/

    SimpleTest.waitForExplicitFinish();

    var win;

    var finalHistoryLength = 0;

    function run() {

      win = window.open("file_session_history_on_redirect.html");

    var pageshowCounter = 0;

    async function pageshow() {

      // Need to trigger new loads asynchronously after page load, otherwise

      // new loads are treated as replace loads.

      await new Promise((r) => setTimeout(r));

      ++pageshowCounter;

      info("Page load: " + win.location.href);

      switch (pageshowCounter) {

        case 1:

          ok(win.location.href.includes("file_session_history_on_redirect.html"));

          win.location.href = "redirect_handlers.sjs";

          break;

        case 2:

          ok(win.location.href.includes("redirect_handlers.sjs"));

          // Put the initial page also as the last entry in the session history.

          win.location.href = "file_session_history_on_redirect.html";

          break;

        case 3:

          ok(win.location.href.includes("file_session_history_on_redirect.html"));

          finalHistoryLength = win.history.length;

          win.history.go(-2);

          break;

        case 4:

          ok(win.location.href.includes("file_session_history_on_redirect.html"));

          win.history.forward();

          break;

        case 5:

          ok(win.location.href.includes("file_session_history_on_redirect_2.html"));

          win.history.back();

          break;

        case 6:

          ok(win.location.href.includes("file_session_history_on_redirect.html"));

          win.history.forward();

          break;

        case 7:

          ok(win.location.href.includes("file_session_history_on_redirect_2.html"));

          is(win.history.length, finalHistoryLength, "Shouldn't have changed the history length.");

          win.history.forward();

          break;

        case 8:

          ok(win.location.href.includes("file_session_history_on_redirect.html"));

          is(win.history.length, finalHistoryLength, "Shouldn't have changed the history length.");

          win.onpagehide = null;

          finishTest();

          break;

        default:

            ok(false, "unexpected pageshow");

    function finishTest() {

      win.close()

      SimpleTest.finish();

  </script>

</head>

<body onload="run()">

<p id="display"></p>

<div id="content" style="display: none"></div>

<pre id="test"></pre>

</body>

</html>