public function testAddAndRemoveChild()
{
$d = new Dom(Dom::XHTML11);
$d->addChild(array('nodeName' => 'p', 'nodeValue' => 'This is a paragraph'));
$this->assertEquals(1, count($d->getChildren()));
$this->assertEquals('p', $d->getChild(0)->getNodeName());
$this->assertTrue($d->hasChildren());
$d->removeChild(0);
$this->assertFalse($d->hasChildren());
}