| <!doctype html> |
| <title>CSSImportRule correctly unlinks its child stylesheet from its parent</title> |
| <link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <link rel="help" href="https://drafts.csswg.org/cssom/#the-cssimportrule-interface"> |
| <style> |
| @import "data:text/css,:root{background:red}"; |
| </style> |
| <script> |
| let t = async_test("@import stylesheet is properly unlinked from parent after removal"); |
| window.onload = t.step_func_done(function() { |
| let sheet = document.styleSheets[0]; |
| let childSheet = sheet.cssRules[0].styleSheet; |
| assert_not_equals(childSheet, null, "@import rule should have a stylesheet"); |
| assert_equals(childSheet.parentStyleSheet, sheet, "@import rule should the correct parent"); |
| sheet.deleteRule(0); |
| assert_equals(childSheet.parentStyleSheet, null, "@import rule should be correctly unlinked"); |
| }); |
| </script> |
