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

    function imageHasLoaded() {
      return fetch("bug1739957.sjs?loaded")
        .then(response => response.text())
        .then(loaded => Boolean(loaded));
    }

    async function test() {
      let newDiv = document.createElement("div");
      newDiv.innerHTML = `<img src="bug1739957.sjs" onload="parent.postMessage('handlerRuns', '*')">`;

      let eventHandlerCalled = false;
      window.addEventListener("message", () => { eventHandlerCalled = true; }, { once: true })

      document.getElementById("frame").contentDocument.body.appendChild(newDiv);

      await SimpleTest.promiseWaitForCondition(imageHasLoaded, "Wait for image to load");

      ok(!eventHandlerCalled, "Event handlers on imported nodes shouldn't execute if sandbox doesn't allow script");

      SimpleTest.finish();
    }
  </script>
</head>
<body onload="test();">
<p id="display"></p>
<iframe id="frame" sandbox="allow-same-origin" src="about:blank"></iframe>
<div id="content" style="display: none"></div>
<pre id="test"></pre>
</body>
</html>