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<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <title>Test meta refresh</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
  <script>
    SimpleTest.waitForExplicitFinish();

    let hasLoadedInitialOnce = false;
    let bc = new BroadcastChannel("test_meta_refresh");
    bc.onmessage = function(event) {
      info(event.data.load || event.data);
      if (event.data.load == "initial") {
        if (!hasLoadedInitialOnce) {
          hasLoadedInitialOnce = true;
          bc.postMessage("loadnext");
        } else {
          bc.postMessage("ensuremetarefresh");
        }
      } else if (event.data.load == "nextpage") {
        bc.postMessage("back");
      } else if (event.data.load == "refresh") {
        bc.postMessage("close");
      } else if (event.data == "closed") {
        ok(true, "Meta refresh page was loaded.");
        SimpleTest.finish();
      }
    }

    function test() {
      window.open("file_meta_refresh.html?initial", "", "noopener");
    }
  </script>
</head>
<body onload="test()">
<p id="display"></p>
<div id="content" style="display: none"></div>
<pre id="test"></pre>
</body>
</html>