public function testValidate()
{
$original_directory = getcwd();
chdir('..' . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . '..');
$xHtml = <<<END
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title></title>
</head>
<body>
</body>
</html>
END;
$this->assertTrue(PageView::validate($xHtml));
$xHtml = <<<END
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>
</head>
<body>
</body>
</html>
END;
$this->assertFalse(PageView::validate($xHtml));
chdir($original_directory);
}