/**
  * Export in CSV the datas builded from SQL queries
  * @return String $content the CSV content
  */
 public function exportCSV()
 {
     $this->stats_formatter->clearContent();
     $this->stats_formatter->addLine(array_values($this->title));
     foreach ($this->datas as $value) {
         $this->stats_formatter->addLine(array_values($value));
     }
     return $this->stats_formatter->getCsvContent();
 }
 public function itExportsMultipleTimes()
 {
     $data_line = array('Data', 'Data', 'Data');
     $statistics_formatter = new Statistics_Formatter('', '', ',');
     $statistics_formatter->addLine($data_line);
     $this->assertEqual($statistics_formatter->getCsvContent(), PHP_EOL . 'Data,Data,Data' . PHP_EOL);
     $this->assertEqual($statistics_formatter->getCsvContent(), PHP_EOL . 'Data,Data,Data' . PHP_EOL);
     $statistics_formatter->addLine($data_line);
     $this->assertEqual($statistics_formatter->getCsvContent(), PHP_EOL . 'Data,Data,Data' . PHP_EOL . 'Data,Data,Data' . PHP_EOL);
 }