public function testCreateCampaignStats()
 {
     $config = (include __DIR__ . '/config.php');
     $campaigns = $this->ads->getAdSetsFromAccount($config['account_id']);
     $campaign_ids = \ebussola\facebook\ads\adcampaign\AdCampaignHelper::extractIds($campaigns);
     $campaign_report = $this->facebook->createCampaignStats($campaign_ids, new DateTime('-30 days'), new DateTime('today'));
     $this->assertInstanceOf('\\ebussola\\ads\\reports\\facebook\\campaignstats\\CampaignStatsReport', $campaign_report);
     foreach ($campaign_report as $campaign_stats) {
         $this->assertInstanceOf('\\ebussola\\ads\\reports\\facebook\\CampaignStats', $campaign_stats);
     }
 }
 /**
  * @param           $campaign_ids
  * @param \DateTime $date_start
  * @param \DateTime $date_end
  * @param           $stats_data
  *
  * @return array
  */
 private function _createDailyCampaignStats($campaign_ids, \DateTime $date_start, \DateTime $date_end)
 {
     $data_columns = $this->getCampaignFields();
     $filters = array(ReportStatsHelper::createFilter('campaign_id', 'in', $campaign_ids));
     $stats = $this->ads->getDailyReportStats($this->account_id, $data_columns, $filters, $date_start, $date_end);
     $stats_report = new CampaignStatsReport();
     foreach ($stats as $stats_data) {
         $stats = new \ebussola\ads\reports\facebook\campaignstats\CampaignStats($stats_data);
         $stats->refreshValues();
         $stats_report->addStats($stats);
     }
     return $stats_report;
 }