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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>