function testWhitelist()
{
$textObj = new HTMLText('Test', 'meta,link');
$this->assertEquals('<meta content="Keep"><link href="Also Keep">', $textObj->whitelistContent('<meta content="Keep"><p>Remove</p><link href="Also Keep" />Remove Text'), 'Removes any elements not in whitelist excluding text elements');
$textObj = new HTMLText('Test', 'meta,link,text()');
$this->assertEquals('<meta content="Keep"><link href="Also Keep">Keep Text', $textObj->whitelistContent('<meta content="Keep"><p>Remove</p><link href="Also Keep" />Keep Text'), 'Removes any elements not in whitelist including text elements');
}