test_bug1747019.html

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<!DOCTYPE HTML>

<html>

<head>

  <meta charset="utf-8">

  <title>Test session history and caching</title>

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

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

  <script>

    SimpleTest.waitForExplicitFinish();

    var win;

    var loadCount = 0;

    var initialContent;

    // The test loads first a page in a new window, then using

    // form submission loads another page and then using form submission

    // again loads third page. That page triggers history.go(-1).

    // The second page is loaded now again and should have the same content

    // as it had before.

    function test() {

      win = window.open("cache_control_max_age_3600.sjs?initial");

      window.onmessage = (e) => {

        is(e.data, "loaded", "Should get load message 'loaded'");

        ++loadCount;

        if (loadCount == 1) {

          win.document.forms[0].submit();

        } else if (loadCount == 2) {

          initialContent = win.document.body.textContent;

          info("The initial content is [" + initialContent + "].");

          win.document.forms[0].submit();

        } else if (loadCount == 3) {

          let newContent = win.document.body.textContent;

          info("The new content is [" + newContent + "].");

          win.close();

          is(initialContent, newContent, "Should have loaded the page from cache.");

          SimpleTest.finish();

        } else {

          ok(false, "Unexpected load count.");

  </script>

</head>

<body onload="test()">

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

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

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

</body>

</html>