| <!doctype html> |
| <title>Inserted @import rule's styleSheet.parentStyleSheet</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <link rel="help" href="https://drafts.csswg.org/cssom/#dom-cssimportrule-stylesheet"> |
| <script> |
| "use strict"; |
| |
| test(() => { |
| const style = document.createElement("style"); |
| document.head.appendChild(style); |
| const { sheet } = style; |
| sheet.insertRule('@import "data:text/css,"', 0); |
| const rule = sheet.cssRules[0]; |
| assert_equals( |
| rule.styleSheet.parentStyleSheet, |
| sheet, |
| "The imported stylesheet's parentStyleSheet should be the sheet it was inserted into" |
| ); |
| style.remove(); |
| }, "insertRule @import produces a styleSheet whose parentStyleSheet is the containing sheet"); |
| </script> |
