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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/speculation-rules/prerender/resources/utils.js"></script>
<script>
function runAlertTest() {
window.alert('Hello! Preprendering!');
return 'no block';
}
function runConfirmTest() {
const result = window.confirm('Are you preprendering page?');
return 'the return value is ' + (result === true ? 'yes' : 'no');
}
function runPromptTest() {
const result = window.prompt('Are you preprendering page?',
'the default value');
return 'the return value is ' + (result === null ? 'null' : result);
}
const params = new URLSearchParams(location.search);
const uid = params.get('uid');
// The main test page (restriction-message-boxes.html) loads the
// initiator page, then the initiator page will prerender itself with the
// `prerendering` parameter.
const isPrerendering = params.has('prerendering');
if (isPrerendering) {
// Test web APIs on the pages.
const bc = new PrerenderChannel('prerender-channel', uid);
assert_true(document.prerendering);
if (params.has('alert')) {
bc.postMessage(runAlertTest());
} else if (params.has('confirm')) {
bc.postMessage(runConfirmTest());
} else if (params.has('prompt')) {
bc.postMessage(runPromptTest());
}
bc.close();
window.close();
} else {
// Initiator pages should prerender the prerendering page.
const url = new URL(document.URL);
url.searchParams.append('prerendering', '');
startPrerendering(url);
}
</script>