public function testCanGoBackUpSeveralLevels()
{
$strong = Element::strong('foo');
$em = Element::em('bar');
$this->object->nest($strong, 'strong')->getChild('strong')->nest($em, 'em');
$child = $this->object->getChild('strong.em');
$this->assertEquals($child->getParent()->getParent(), $this->object);
$this->assertEquals($child->getParent()->getParent(), $child->getParent(1));
}