| <!DOCTYPE html> |
| <script src="/common/utils.js"></script> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/common/get-host-info.sub.js"></script> |
| <script src="/speculation-rules/prerender/resources/utils.js"></script> |
| <script src="/speculation-rules/prerender/resources/deferred-promise-utils.js"></script> |
| <body> |
| <script> |
| |
| async function main() { |
| // Start loading a sandbox iframe, which is treated as cross-origin iframe. |
| // The iframe messages us with the value of its document.prerendering, |
| // which should be false since load is delayed until after activation. |
| const sandboxIframe = document.createElement('iframe'); |
| sandboxIframe.sandbox = 'allow-scripts'; |
| |
| const gotMessage = new Promise((resolve, reject) => { |
| window.addEventListener('message', (e) => { |
| if (e.data === 'document.prerendering: false') |
| resolve(); |
| else |
| reject('bad message: ' + e.data); |
| }); |
| }); |
| |
| sandboxIframe.src = 'post-message-prerendering-completion-notification.html'; |
| document.body.appendChild(sandboxIframe); |
| |
| // To give the test a chance to fail by giving enough time if it loads the |
| // cross-origin iframe instead of deferring, wait for a same-origin iframe to |
| // load before proceeding with the test. |
| await createFrame('empty.html'); |
| |
| // Start the event collector to trigger activation. |
| const prerenderEventCollector = new PrerenderEventCollector(); |
| prerenderEventCollector.start(gotMessage, 'iframe loaded'); |
| } |
| |
| // The main test page (prerender/sandbox-iframe.html) loads the initiator |
| // page, then the initiator page will prerender itself with the |
| // `prerendering` parameter. |
| const params = new URLSearchParams(location.search); |
| if (!params.has('prerendering')) { |
| loadInitiatorPage(); |
| } else { |
| main(); |
| } |
| </script> |
| </body> |
