ignore-with-containertiming-and-child-img.html (1786B)
1 <!DOCTYPE HTML> 2 <meta charset=utf-8> 3 <title>Container Timing: an image inside a containertiming inside a containertiming-ignore</title> 4 <body> 5 <style> 6 body { 7 margin: 0; 8 } 9 </style> 10 <script src="/resources/testharness.js"></script> 11 <script src="/resources/testharnessreport.js"></script> 12 <script src="/container-timing/resources/container-timing-helpers.js"></script> 13 <script src="/element-timing/resources/element-timing-helpers.js"></script> 14 <script> 15 let beforeRender; 16 async_test(function (t) { 17 assert_implements(window.PerformanceContainerTiming, "PerformanceContainerTiming is not implemented"); 18 const observer = new PerformanceObserver( 19 t.step_func_done(function(entryList) { 20 assert_equals(entryList.getEntries().length, 1); 21 const entry = entryList.getEntries()[0]; 22 checkContainerEntry(entry, 'div2_ct', 'img_id', beforeRender) 23 checkRect(entry, [0, 100, 0, 100]) 24 checkContainerSize(entry, 10000); 25 }) 26 ); 27 observer.observe({entryTypes: ['container']}); 28 29 // Add a div that is the container timing root 30 const div1 = document.createElement('div'); 31 div1.setAttribute('containertiming-ignore', ''); 32 document.body.appendChild(div1); 33 34 // Intermediate ignore should block paint events 35 const div2 = document.createElement('div'); 36 div2.setAttribute('containertiming', 'div2_ct'); 37 div1.appendChild(div2) 38 39 // Add image of width equal to 100 and height equal to 100. 40 const img = document.createElement('img'); 41 img.src = '/container-timing/resources/square100.png'; 42 img.setAttribute('id', 'img_id'); 43 div2.appendChild(img); 44 45 beforeRender = performance.now(); 46 }, 'An image inside a containertiming, inside a containertiming-ignore is still reported.'); 47 </script> 48 49 </body>