protected function validation1()
{
$x = new XNode('<html>
<head>
<title>Test page</title>
</head>
<body>
<div class="hello2">
</body>
</html>');
$this->equ($x->validate(), false);
$x = new XNode('<html>
<head>
<title>Test page</title>
</head>
<body>
<div class="hello2">
</div>
</body>
</html>');
$this->equ($x->validate(), true);
}