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<!DOCTYPE html>
<title>Test Subframe Loading Disabler</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
promise_test(async () => {
const container = document.body.appendChild(document.createElement("div"));
// Create a helper iframe that triggers loading the new fenced frame
// simultaneously when the parent container is removed.
const helperFrame = container.appendChild(document.createElement("iframe"));
helperFrame.contentWindow.onunload = function() {
const fenced_frame = document.createElement("fencedframe");
fenced_frame.src = "resources/dummy.https.html";
container.appendChild(fenced_frame);
};
// If the fenced frame loads when it's not supposed to,
// a DCHECK will catch that and cause the test to crash.
document.body.removeChild(container);
}, "Fenced frames should not load if its parent has subframe loading disabled");
</script>
</body>
</html>
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