| <!DOCTYPE html> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <style>#t1 { color: red }</style> |
| <div id="t1">Should be green.</div> |
| <script> |
| test(() => { |
| // Triggers synch active stylesheet update. |
| var sheet = document.styleSheets[0]; |
| // Clears the previous RuleSet for rebuild. |
| sheet.insertRule("#dummy {}", 0); |
| // No Ruleset recreated since media does not match. |
| sheet.media.mediaText = "nomatch"; |
| var newStyle = document.createElement("style"); |
| newStyle.appendChild(document.createTextNode("div { color: green }")); |
| // New sheet triggers active stylesheet update and style recalc for #t1. |
| document.head.appendChild(newStyle); |
| }, "Check that appending a stylesheet while clearing the RuleSet of an existing sheet does not crash"); |
| |
| test(() => assert_equals(getComputedStyle(t1).color, "rgb(0, 128, 0)"), |
| "Check that the #t1 rule no longer applies."); |
| </script> |
