| <!doctype html> |
| <!-- |
| Tests for about:blank iframes `document.prerendering` state |
| and prerenderingchange event. |
| --> |
| <title>Test about:blank iframes prerendering state</title> |
| <meta name="timeout" content="long"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="resources/utils.js"></script> |
| <body> |
| <script> |
| |
| setup(() => assertSpeculationRulesIsSupported()); |
| |
| promise_test(async t => { |
| const channel = new BroadcastChannel('test-channel'); |
| |
| const gotMessage = new Promise(resolve => { |
| channel.addEventListener('message', e => { |
| resolve(e.data); |
| }, {once: true}); |
| }); |
| |
| // Make the window to start the prerender. |
| const url = `resources/about-blank-iframes.html`; |
| window.open(url, '_blank', 'noopener'); |
| |
| const msg = await gotMessage; |
| assert_equals(msg, 'PASS'); |
| }, 'about:blank iframes'); |
| </script> |
| </body> |
