| <!doctype html> |
| <title>style is invalidated properly as a result of attribute changes in display: none subtrees</title> |
| <link rel="help" href="https://drafts.csswg.org/cssom/#dom-window-getcomputedstyle"> |
| <link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> |
| <link rel="author" title="Mozilla" href="https://mozilla.org"> |
| <script src=/resources/testharness.js></script> |
| <script src=/resources/testharnessreport.js></script> |
| <style> |
| div { |
| color: red |
| } |
| .foo { |
| color: lime; |
| } |
| </style> |
| <div style="display: none"> |
| <div id="undisplayed"></div> |
| </div> |
| <script> |
| test(function() { |
| let undisplayed_style = getComputedStyle(undisplayed); |
| assert_equals(undisplayed_style.color, "rgb(255, 0, 0)"); |
| undisplayed.classList.add("foo"); |
| assert_equals(undisplayed_style.color, "rgb(0, 255, 0)"); |
| }, "getComputedStyle gets invalidated in display: none subtrees due to attribute mutations"); |
| </script> |
