<!doctype html>
<meta charset=utf-8>
<title>Window#document</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<div id=log></div>
<script>
async_test(function() {
  var URL = "/common/blank.html";

  var iframe = document.createElement("iframe");
  document.body.appendChild(iframe);
  var initialWindow = iframe.contentWindow;
  var initialDocument = initialWindow.document;
  assert_equals(initialDocument.URL, "about:blank");
  iframe.src = URL;
  iframe.onload = this.step_func_done(function() {
    assert_equals(iframe.contentWindow, initialWindow);
    assert_equals(initialDocument.URL, "about:blank");
    var loadedDocument = initialWindow.document;
    assert_equals(loadedDocument.URL, location.href.replace(location.pathname, URL));
    assert_not_equals(initialDocument, loadedDocument);
  });
}, "Document in a browsing context");
</script>