public function testGetLineNo()
{
$element = new Element('div');
$this->assertEquals(0, $element->getLineNo());
$html = '<ul>
<li>One</li>
<li>Two</li>
<li>Three</li>
</ul>';
$document = new Document($html, false);
$this->assertEquals(4, $document->find('li')[2]->getLineNo());
}