public function testGetProperties()
{
$audio = new Audio($this->record);
self::assertEquals($this->record['file_id'], $audio->getFileId());
self::assertEquals($this->record['duration'], $audio->getDuration());
self::assertEquals($this->record['performer'], $audio->getPerformer());
self::assertEquals($this->record['title'], $audio->getTitle());
self::assertEquals($this->record['mime_type'], $audio->getMimeType());
self::assertEquals($this->record['file_size'], $audio->getFileSize());
}