public function testBaseline()
{
$xml = simplexml_load_string('<root/>');
$node = simpleXmlAddNodesXpath($xml, 'foo/bar[@baz=hello]/science');
$this->assertTrue(strpos($xml->asXml(), '<root><foo><bar baz="hello"><science/></bar></foo></root>') !== false);
$this->assertEquals($node->getName(), 'science');
}