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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
assert_true(document.prerendering);
async function startPresentationRequest() {
const bc = new PrerenderChannel('prerender-channel');
const presentationRequest = new PresentationRequest(
'https://example.com/presentation.html');
try {
const _ = await presentationRequest.start();
bc.postMessage('unexpected success');
} catch (err) {
bc.postMessage('request failed');
} finally {
bc.close();
}
}
startPresentationRequest();
</script>
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