public function testIntro($fileName)
{
$content = $this->getContent($fileName);
$item = $this->getItem($content);
$expected = $this->getFirstValueFromXpath($content, "*/ns:content[1]");
$this->assertEquals($expected, $item->getIntro(), 'Fail asserting that first element of ' . $fileName . ' has intro "' . $expected . '"');
}