<!DOCTYPE HTML>
<html>
<head>
  <title>Bug 1626249: Ensure correct display of neterror page for XFO</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<iframe style="width:100%;" id="xfo_testframe"></iframe>

<script class="testbody" type="text/javascript">

SimpleTest.waitForExplicitFinish();

const XFO_ERROR_PAGE_MSG = "This page has an X-Frame-Options policy that prevents it from being loaded in this context";

let xfo_testframe = document.getElementById("xfo_testframe");

xfo_testframe.onload = function() {
  let wrappedXFOFrame = SpecialPowers.wrap(xfo_testframe.contentWindow);
  let frameContentXFO = wrappedXFOFrame.document.body.innerHTML;
  ok(frameContentXFO.includes(XFO_ERROR_PAGE_MSG), "xfo error page correct");
  SimpleTest.finish();
}

xfo_testframe.onerror = function() {
  ok(false, "sanity: should not fire onerror for xfo_testframe");
  SimpleTest.finish();
}

xfo_testframe.src = "file_xfo_error_page.sjs";

</script>
</body>
</html>
