getComputedStyle-display-none-002.html (1260B)
1 <!doctype html> 2 <meta charset="utf-8"> 3 <title>CSSOM: getComputedStyle gets invalidated for display: none elements (rules)</title> 4 <link rel="help" href="https://drafts.csswg.org/cssom/#dom-window-getcomputedstyle"> 5 <link rel="help" href="https://bugs.webkit.org/show_bug.cgi?id=186882"> 6 <link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> 7 <script src=/resources/testharness.js></script> 8 <script src=/resources/testharnessreport.js></script> 9 <style> 10 #undisplayed { 11 display: none; 12 color: red; 13 } 14 .sibling + #undisplayed { 15 color: green; 16 } 17 18 .sibling + #undisplayed > div { 19 color: yellow; 20 } 21 </style> 22 <div id="helper"></div> 23 <div id="undisplayed"><div id="child"></div></div> 24 <script> 25 test(function() { 26 let undisplayed_style = getComputedStyle(undisplayed); 27 let undisplayed_child_style = getComputedStyle(child); 28 assert_equals(undisplayed_style.color, "rgb(255, 0, 0)"); 29 assert_equals(undisplayed_child_style.color, "rgb(255, 0, 0)"); 30 helper.classList.add("sibling"); 31 assert_equals(undisplayed_style.color, "rgb(0, 128, 0)"); 32 assert_equals(undisplayed_child_style.color, "rgb(255, 255, 0)"); 33 }, "getComputedStyle gets invalidated in display: none subtrees due to rule matching changes"); 34 </script>