| <!DOCTYPE html> |
| <title>View transitions: long delay in pageswap aborts the transition</title> |
| <link rel="help" href="https://drafts.csswg.org/css-view-transitions-2/"> |
| <link rel="author" href="mailto:vmpstr@chromium.org"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| @view-transition { |
| navigation: auto; |
| } |
| </style> |
| <script> |
| const params = new URLSearchParams(location.search); |
| |
| switch (params.get("mode") || "test") { |
| case "test": |
| promise_test(async t => { |
| const event = await new Promise(resolve => { |
| window.did_reveal = e => { resolve(e) }; |
| const popup = window.open("?mode=old"); |
| t.add_cleanup(() => popup.close()); |
| }); |
| |
| assert_equals(event.viewTransition, null, |
| 'viewTransition must have been skipped.'); |
| }); |
| break; |
| case "old": |
| onpageswap = (e) => { |
| assert_not_equals(e.viewTransition, null); |
| |
| // Busy loop for 4.5 seconds in order to "synchronously block" |
| var start = Date.now(); |
| var end = start + 4500; |
| while (end - Date.now() > 0); |
| }; |
| |
| onload = () => requestAnimationFrame(() => requestAnimationFrame(() => { |
| location.replace('?mode=new'); |
| })); |
| break; |
| case "new": |
| onpagereveal = e => window.opener.did_reveal(e); |
| break; |
| } |
| </script> |
