public function testPicsInSeries()
{
$url = realpath(__DIR__ . '/../Resources') . DIRECTORY_SEPARATOR . 'logo.png';
$pic = new Pic();
$pic->setUrl($url);
$series = new Series();
$pic1 = new Pic();
$pic2 = new Pic();
$this->assertEquals(0, count($series->getPics()));
$series->addPic($pic);
$this->assertEquals(1, count($series->getPics()));
$this->assertTrue($series->containsPic($pic));
$series->removePic($pic);
$this->assertEquals(0, count($series->getPics()));
$this->assertFalse($series->containsPic($pic));
$picWithoutUrl = new Pic();
$series->addPic($picWithoutUrl);
$series->addPic($pic);
$this->assertEquals(2, count($series->getPics()));
$this->assertEquals($url, $series->getFirstUrlPic());
}