3 testRunner
.dumpAsText();
5 var n
= document
.createElement('fieldset');
6 document
.documentElement
.appendChild(n
);
7 try { n
.createShadowRoot(); } catch(e
) {}
8 n
.appendChild(document
.createElement('div'));
11 document
.execCommand("selectall");
13 </script>This test passes if it does not crash