PHPUnit + Xpath

XPath)

<?php

require_once 'PHPUnit/Framework.php';

class Xml
{
    public function getNavigation()
    {
        return '<ul id="navigation">
                    <li><a href="/search">Suche</a></li>
                    <li><a href="/list">Liste</a></li>
                    <li><a href="/add">Hinzufügen</a></li>
                </ul>';
    }
}

class XmlTest extends PHPUnit_Framework_TestCase 
{
    public function setUp()
    {
        $this->xml = new Xml();
    }
    
    /**
     * @test
     */
    public function It_shouldHaveTheCorrectElementCount()
    {
       $this->assertSelectCount('#navigation li', 3, $this->xml->getNavigation());
    }
    
    /**
     * @test
     */
    public function It_shouldHaveTheCorrectElementCountByXpath()
    {
        $xmlString = simplexml_load_string($this->xml->getNavigation());
        $this->assertEquals(3, sizeof($xmlString->xpath('/ul[@id="navigation"]/li')));
    }
    
    /**
    * @test
    */
    public function It_shouldHaveTheCorrectElementCountByAssertTag()
    {
        $matcher = array(
            'tag' => 'ul',
            'attributes' => array('id' => 'navigation'),
            'children' => array(
                'count' => 3,
                'only' => array('tag' => 'li')
            )
        );
        $this->assertTag($matcher, $this->xml->getNavigation());
    }
}