| <!DOCTYPE HTML> |
| <meta charset=utf-8> |
| <title>Element Timing: do not observe text in shadow tree</title> |
| <style> |
| body { |
| margin: 0; |
| } |
| </style> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="resources/element-timing-helpers.js"></script> |
| <div id='target'></div> |
| <script> |
| async_test(function (t) { |
| if (!window.PerformanceElementTiming) { |
| assert_unreached("PerformanceElementTiming is not implemented"); |
| } |
| const observer = new PerformanceObserver( |
| t.step_func_done(function(entryList) { |
| assert_unreached('Should not observe text elements in shadow trees!'); |
| }) |
| ); |
| observer.observe({entryTypes: ['element']}); |
| // We add the text during onload to be sure that the observer is registered |
| // in time for it to observe the element timing. |
| window.onload = () => { |
| // Add text of width equal to 100 and height equal to 100. |
| const text = document.createElement('p'); |
| text.innerHTML = 'Text'; |
| text.setAttribute('elementtiming', 'my_text'); |
| const shadowRoot = document.getElementById('target').attachShadow({mode: 'open'}); |
| shadowRoot.appendChild(text); |
| t.step_timeout(() => { |
| // Assume entry was not dispatched, so test passes. |
| t.done(); |
| }, 500); |
| }; |
| }, 'Text in shadow tree with elementtiming attribute is not observable.'); |
| </script> |
