| Nicolás Peña Moreno | 0a80ac8 | 2019-08-28 17:31:08 | [diff] [blame] | 1 | <!DOCTYPE HTML> |
| 2 | <meta charset=utf-8> |
| 3 | <title>Element Timing: observe text with display style.</title> |
| 4 | <body> |
| 5 | <script src="/resources/testharness.js"></script> |
| 6 | <script src="/resources/testharnessreport.js"></script> |
| 7 | <script src="resources/element-timing-helpers.js"></script> |
| 8 | <style> |
| 9 | h1 { |
| 10 | display: flex; |
| 11 | } |
| 12 | h2 { |
| 13 | display: grid; |
| 14 | } |
| 15 | h3 { |
| 16 | display: block; |
| 17 | } |
| 18 | </style> |
| 19 | <h1 id='title1' elementtiming='h1'>I am h1</h1> |
| 20 | <h2 id='title2' elementtiming='h2'>I am h2</h2> |
| 21 | <h3 id='title3' elementtiming='h3'>I am h3</h3> |
| 22 | <script> |
| 23 | async_test(function (t) { |
| Stephen McGruer | dcfc14d | 2020-04-16 13:23:03 | [diff] [blame] | 24 | assert_implements(window.PerformanceElementTiming, "PerformanceElementTiming is not implemented"); |
| Nicolás Peña Moreno | 0a80ac8 | 2019-08-28 17:31:08 | [diff] [blame] | 25 | const beforeRender = performance.now(); |
| 26 | let observedFlex = false; |
| 27 | let observedGrid = false; |
| 28 | let observedBlock = false; |
| 29 | const observer = new PerformanceObserver( |
| 30 | t.step_func(function(entryList) { |
| 31 | entryList.getEntries().forEach(entry => { |
| 32 | if (entry.id === 'title1') { |
| 33 | assert_false(observedFlex, 'Should observe flex once'); |
| 34 | observedFlex = true; |
| 35 | checkTextElement(entry, 'h1', 'title1', beforeRender, document.getElementById('title1')); |
| 36 | } else if (entry.id === 'title2') { |
| 37 | assert_false(observedGrid, 'Should observe grid once'); |
| 38 | observedGrid = true; |
| 39 | checkTextElement(entry, 'h2', 'title2', beforeRender, document.getElementById('title2')); |
| 40 | } else { |
| 41 | assert_equals(entry.id, 'title3', 'ID should be title1, title2, or title3'); |
| 42 | assert_false(observedBlock, 'Should observe block once'); |
| 43 | observedBlock = true; |
| 44 | checkTextElement(entry, 'h3', 'title3', beforeRender, document.getElementById('title3')); |
| 45 | } |
| 46 | }); |
| 47 | if (observedFlex && observedGrid && observedBlock) |
| 48 | t.done(); |
| 49 | }) |
| 50 | ); |
| 51 | observer.observe({type: 'element', buffered: true}); |
| 52 | }, 'Text with display style is observable.'); |
| 53 | </script> |
| 54 | </body> |
