| <!doctype html> |
| <title>CSS Test: CSSStyleSheet modifications after removal</title> |
| <link rel="help" href="https://drafts.csswg.org/cssom/#the-cssstylesheet-interface"> |
| <link rel="help" href="https://drafts.csswg.org/cssom/#the-cssrule-interface"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <iframe id="frm"></iframe> |
| <iframe id="frm2"></iframe> |
| <script> |
| test(() => { |
| frm.contentDocument.body.innerHTML = "<style>div {color:red}</style>"; |
| let sheet = frm.contentDocument.querySelector("style").sheet; |
| assert_equals(sheet.cssRules.length, 1); |
| frm.remove(); |
| document.body.offsetTop; |
| sheet.insertRule("span {color: green}", 0); |
| assert_equals(sheet.cssRules.length, 2); |
| }, "Modify sheet from removed iframe"); |
| |
| test(() => { |
| frm2.contentWindow.eval("let sheet = new CSSStyleSheet(); document.adoptedStyleSheets = [ sheet ];"); |
| let sheet = frm2.contentDocument.adoptedStyleSheets[0]; |
| assert_equals(sheet.cssRules.length, 0); |
| frm2.remove(); |
| document.body.offsetTop; |
| sheet.insertRule("span {color: green}", 0); |
| assert_equals(sheet.cssRules.length, 1); |
| }, "Modify constructed sheet from removed iframe"); |
| </script> |
