<!doctype html>
<script>
var o = opener;

var frameloaded = null;

o.t.step(function() {o.assert_equals(history.length, 1)});

onload = function () {
  o.t.step(function() {
    o.assert_equals(history.length, 1);
    o.t.done();
  });

  o.t1.step(function() {
    var iframe = document.createElement("iframe");
    iframe.src = "filler.html?id=2";
    document.body.appendChild(iframe);
    o.assert_equals(history.length, 1);
    frameloaded = o.t2.step_func(function() {
      iframe.contentDocument.open();
      iframe.contentDocument.write("3<script>onpageshow = function() {alert('pageshow'); parent.frameloaded()}<\/script>");
      iframe.contentDocument.close();
      frameloaded = o.t2.step_func(function () {
        o.assert_equals(history.length, 2);
        o.t2.done();
      });
    });
    o.t1.done();
  });

}
</script>

<iframe src="filler.html?id=1"></iframe>