| <!DOCTYPE html> |
| <script src="../../resources/js-test.js"></script> |
| <style> |
| .a .b::backdrop { background-color: green; } |
| </style> |
| <div id="t"> |
| <dialog class="b" id="dialog"><span></span><span></span><span></span></dialog> |
| </div> |
| <script> |
| description("Change class affecting ::backdrop style"); |
| |
| var dialog = document.getElementById("dialog"); |
| |
| dialog.showModal(); |
| |
| var green = 'rgb(0, 128, 0)'; |
| |
| shouldNotBe("getComputedStyle(dialog, '::backdrop').backgroundColor", "green"); |
| |
| document.body.offsetLeft; |
| document.getElementById("t").className = "a"; |
| |
| if (window.internals) |
| shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "2"); |
| |
| shouldBe("getComputedStyle(dialog, '::backdrop').backgroundColor", "green"); |
| |
| dialog.close(); |
| </script> |
