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

    function runTest() {
      let bc = new BroadcastChannel("bug1743353");
      new Promise((resolve) => {
        bc.addEventListener("message", () => {
          resolve();
        }, { once: true });

        window.open("file_bug1743353.html", "", "noopener");
      }).then(() => {
        return new Promise(resolve => {
          bc.addEventListener("message", () => {
            resolve();
          }, { once: true });

          bc.postMessage("load");
        })
      }).then(() => {
        return new Promise(resolve => {
          let results = [];
          bc.addEventListener("message", function listener({ data }) {
            results.push(data);
            if (results.length == 3) {
              bc.removeEventListener("message", listener);
              resolve(results);
            }
          });

          bc.postMessage("back");
        });
      }).then((results) => {
        is(results[0], "pagehide", "First event should be 'pagehide'.");
        is(results[1], "unload", "Second event should be 'unload'.");
        is(results[2], "pageshow", "Third event should be 'pageshow'.");

        bc.postMessage("close");

        SimpleTest.finish();
      });
    }
  </script>
</head>
<body onload="runTest();">
<p id="display"></p>
<div id="content" style="display: none"></div>
<pre id="test"></pre>
</body>
</html>