| <!DOCTYPE html> |
| <link rel="help" href="https://drafts.csswg.org/cssom-1/#insert-a-css-rule"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| p { color: green; } |
| </style> |
| <p id="test">This text should be green.</p> |
| <script> |
| test(function() { |
| assert_throws_dom("SyntaxError", () => document.styleSheets[0].insertRule("p { color: red; } garbage", 1)); |
| assert_equals(getComputedStyle(document.getElementById("test")).color, "rgb(0, 128, 0)"); |
| }, "A syntax error in insertRule should throw and not affect the style of the page"); |
| </script> |
