| <!doctype html> |
| <title>CSS Test: Invalidation of :host selectors</title> |
| <link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> |
| <link rel="author" title="Mozilla" href="https://mozilla.org"> |
| <link rel="help" href="https://drafts.csswg.org/css-scoping/#host-selector"> |
| <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1499603"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <div id="host" style="color: green"></div> |
| <script> |
| host.attachShadow({ mode: "open" }).innerHTML = ` |
| <style> |
| :host { color: red !important } |
| </style> |
| `; |
| test(function() { |
| assert_equals(getComputedStyle(host).color, "rgb(255, 0, 0)"); |
| host.shadowRoot.querySelector("style").remove(); |
| assert_equals(getComputedStyle(host).color, "rgb(0, 128, 0)"); |
| }, ":host rules are properly invalidated when stylesheets are removed"); |
| </script> |
