<!DOCTYPE html>
<html>
<body>
<p>This tests selecting content starting in one shadow tree and ending another shadow tree.<br>
To manually test, select "hello world" below by a mouse drag. WebKit should select the phrase.</p>
<div id="container">hello <div>world</div></div>
<script>
getSelection().selectAllChildren(container);
</script>
</body>
</html>