Symfony 2 test xml with Symfony\Component\DomCrawler\Crawler - php

Question

I've got an url that return an xml but I have some problem to extract "link" element.
<rss xmlns:media="http://search.yahoo.com/mrss/" version="2.0">
<channel>
<item>
<id>123</id>
<title>my title</title>
<link>
http://example.org
</link>
</item>
</channel>
</rss>
I need to test it with
Symfony\Component\DomCrawler\Crawler
These are my tests:
$crawler = $this->client->get('/my-feed');
$items = $crawler->filterXPath('//channel/item');
$this->assertGreaterThanOrEqual(1, $items->count()); // ok pass
// ...
$titles = $items->filterXPath('//title')->extract(array('_text'));
$this->assertContains("my title", $titles); // ok pass
// ...
$links = $items->filterXPath('//link')->extract(array('_text'));
$this->assertContains("example.org", $links); // KO!!! don't pass
var_dump($links); // empty string
"link" is a reserved word?

Answer 1

Your XML is broken:
you don't have a closing channel node </channel>
you don't have a closing rss node </rss>
Here is corrected XML :
<rss xmlns:media="http://search.yahoo.com/mrss/" version="2.0">
<channel>
<item>
<id>123</id>
<title>my title</title>
<link>http://example.org</link>
</item>
</channel>
</rss>
Then, ->extract() returns An array of extracted values. So you shouldn't directly try to see its contain but get the first element and do your test:
$this->assertContains("my title", $titles[0]);
// ...
$this->assertContains("example.org", $links[0]);