public function testBooleanMethods()
{
$feed = new Feed\Reader(new Feed\Format\Atom('http://gdata.youtube.com/feeds/base/standardfeeds/most_viewed', 4));
$this->assertTrue($feed->isAtom());
$this->assertFalse($feed->isRss());
$this->assertFalse($feed->isJson());
$this->assertFalse($feed->isPhp());
$this->assertTrue($feed->isYoutube());
$this->assertFalse($feed->isFacebook());
$this->assertFalse($feed->isTwitter());
$this->assertFalse($feed->isVimeo());
$this->assertFalse($feed->isPlaylist());
}