<!DOCTYPE html>
<meta charset="utf-8">
<title>Test for serialized state in XSLT result document</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<script>
async_test(t => {
  let iframe = document.createElement('iframe');
  let src = `<?xml version="1.0"?>
             <?xml-stylesheet type="text/xml" href="#stylesheet"?>
             <doc>
               <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0" id="stylesheet">
                 <xsl:output method="html"/>
                 <xsl:template match="/">
                   <html>
                     <xsl:element name="script">self.addEventListener("message", () => { history.go(0); });</xsl:element>
                     <body onload="parent.postMessage(history.state, '*'); history.replaceState('data', 'title');"></body>
                   </html>
                 </xsl:template>
               </xsl:stylesheet>
             </doc>`;
  iframe.src = "data:text/xml," + encodeURIComponent(src);
  let reloaded = false;
  self.addEventListener("message", t.step_func(({data: state}) => {
    if (!reloaded) {
      assert_equals(state, null, "At this point history.state should be set.");
      iframe.contentWindow.postMessage("", "*");
      reloaded = true;
      return;
    }

    assert_equals(state, 'data', "Data set through history.replaceState in an XSLT result document should persist.");
    t.done();
  }));
  document.body.appendChild(iframe);
}, "Test for serialized state in XSLT result document");
</script>
