| <script> | |
| if (window.testRunner) | |
| testRunner.dumpAsText(); | |
| var n = document.createElement('fieldset'); | |
| document.documentElement.appendChild(n); | |
| try { n.attachShadow({mode: 'open'}); } catch(e) {} | |
| n.appendChild(document.createElement('div')); | |
| onload = function() { | |
| document.execCommand("selectall"); | |
| }; | |
| </script>This test passes if it does not crash |