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chromium/third_party/blink/web_tests/external/wpt/html/browsers/history/the-history-interface/history_back_1.html 

<!doctype html>
<title>history.back() with session history</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<script>
  var t = async_test();
  started = false;
  pages = []
  timer = setInterval(
    function() {
      if (pages.length < 2)
        return;
      clearInterval(timer);
      setTimeout(t.step_func(
        function() {
          assert_array_equals(pages, [2, 1], "Pages opened during history navigation");
          t.done();
        }
      ), 500);
    }, 50);
  t.step(function() {
    win = window.open("history_entry.html?urls=history_back-1.html");
    t.add_cleanup(function() { win.close(); });
  });
</script>