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<!doctype html>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<body>
<script>
promise_test(async t => {
let label = await navigator.cookieDeprecationLabel.getValue();
assert_equals(label, 'label_test');
const iframe = document.createElement('iframe');
iframe.src = "dummy.html";
const iframeLoadedPromise = new Promise(resolve => {
iframe.addEventListener('load', resolve, { once: true });
document.body.append(iframe);
});
await iframeLoadedPromise;
const iframeNavigator = iframe.contentWindow.navigator;
let iframeLabel = await iframeNavigator.cookieDeprecationLabel.getValue();
assert_equals(iframeLabel, 'label_test');
iframe.parentNode.removeChild(iframe);
label = await navigator.cookieDeprecationLabel.getValue();
assert_equals(label, 'label_test');
iframeLabel = await iframeNavigator.cookieDeprecationLabel.getValue();
assert_equals(iframeLabel, '');
}, 'Test navigator.cookieDeprecationLabel behavior in detached iframes');
</script>
</body>
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