synchronous-callback-skipped-before-run.html (1383B)
1 <!DOCTYPE html> 2 <html> 3 <title>View transitions: skipTransition() invoked before a synchronous updateDOM callback is invoked</title> 4 <link rel="help" href="https://www.w3.org/TR/css-view-transitions-1/"> 5 <link rel="author" href="mailto:khushalsagar@chromium.org"> 6 7 <script src="/resources/testharness.js"></script> 8 <script src="/resources/testharnessreport.js"></script> 9 10 <style> 11 #first { 12 width: 100px; 13 height: 100px; 14 background: blue; 15 contain: paint; 16 } 17 </style> 18 19 <div id=first></div> 20 21 <script> 22 promise_test(async t => { 23 assert_implements(document.startViewTransition, "Missing document.startViewTransition"); 24 return new Promise(async (resolve, reject) => { 25 let transition = document.startViewTransition(() => { 26 first.style.viewTransitionName = "target"; 27 }); 28 transition.skipTransition(); 29 // The phase of |transition| is not done, so skip the view transition with 30 // an "AbortError" DOMException. 31 // https://drafts.csswg.org/css-view-transitions-1/#ViewTransition-skipTransition 32 await promise_rejects_dom(t, "AbortError", transition.ready); 33 await transition.finished; 34 35 if (window.getComputedStyle(first).viewTransitionName == "target") 36 resolve(); 37 else 38 reject(); 39 }); 40 }, "finished promise should be resolved if skipTransition() is invoked before a synchronous updateCallbackDone callback is dispatched"); 41 </script>