<!DOCTYPE html> <meta name="timeout" content="long"> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <script src="/common/utils.js"></script> <script src="/speculation-rules/prerender/resources/utils.js"></script> <body> <script> setup(() => assertSpeculationRulesIsSupported()); function runTest(test_file, expectation, description) { promise_test(async t => { const uid = token(); const bc = new PrerenderChannel('prerender-channel', uid); t.add_cleanup(_ => bc.close()); const gotMessage = new Promise(resolve => { bc.addEventListener('message', e => { resolve(e.data); }, { once: true }); }); // Open a new window to test the message box. window.open(`${test_file}&uid=${uid}`, '_blank', 'noopener'); // Wait for the message from the prerendering page. assert_equals(await gotMessage, expectation); }, description); } // Test that a page invokes the alert modal during prerendering. runTest( 'resources/message-boxes.html?alert', 'no block', 'alert() does not display the modal and returns immediately'); // Test that a page invokes the confirm modal during prerendering. runTest( 'resources/message-boxes.html?confirm', 'the return value is no', 'confirm() does not display the modal and returns immediately'); // Test that a page invokes the prompt modal during prerendering. runTest( 'resources/message-boxes.html?prompt', 'the return value is null', 'prompt() does not display the modal and returns immediately'); </script> </body>