| <!DOCTYPE html> |
| <script src="../../../resources/testharness.js"></script> |
| <script src="../../../resources/testharnessreport.js"></script> |
| <style></style> |
| <div> |
| <div></div> |
| <div></div> |
| <div></div> |
| <div></div> |
| <div></div> |
| <span></span> |
| </div> |
| <script> |
| test(() => { |
| assert_true(!!window.internals, "Test requires window.internals."); |
| document.body.offsetTop; |
| document.styleSheets[0].insertRule("span{background:green}", 0); |
| assert_equals(internals.updateStyleAndReturnAffectedElementCount(), 1, "Check that only the span is affected."); |
| }, "Inserting a style rule with a type selector should only invalidate elements with that type."); |
| </script> |
