FileNamingResolver\NamingStrategy\DatetimeNamingStrategy::getFileFormat PHP Method

    public function getFileFormat()
    {
        return $this->fileFormat;
    }

 public function testGetFileFormat()
 {
     $strategy = new DatetimeNamingStrategy(DatetimeNamingStrategy::FORMAT_DIR_YEAR_MONTH);
     $this->assertEquals(DatetimeNamingStrategy::FORMAT_FILE_TIME_MICROSECONDS, $strategy->getFileFormat());
     $strategy = new DatetimeNamingStrategy(DatetimeNamingStrategy::FORMAT_DIR_YEAR_MONTH, DatetimeNamingStrategy::FORMAT_FILE_TIMESTAMP_MICROSECONDS);
     $this->assertEquals(DatetimeNamingStrategy::FORMAT_FILE_TIMESTAMP_MICROSECONDS, $strategy->getFileFormat());
 }